Product catalogue / 09

Chemical Tanker Manhole Covers & Safety Valves

Access and pressure protection for chemical tanks. Specify the transported medium, corrosion allowance, seal and relief settings.

19 traceable product codes

Product models and configurations

SIMEI FT-CMH-100 — 260 mm compact stainless-steel manhole cover
SIMEI FT-CMH-100

260 mm compact stainless-steel manhole cover

Top access and sealing for a chemical tanker; select the cover construction, base height and seal for the carried medium.

Technical details

Main features

  • Mirror-polished stainless-steel surface.
  • Provision for a lead seal.
  • Hinge opening stop helps prevent the open cover from striking the tank.
  • Nominal diameter, material and base height can be specified to suit the installation.
  • Compact construction for restricted installation space.

Available Configurations

  • Select the seal material for the carried medium, temperature and required sealing pressure.
  • The family ordering guide lists aluminium alloy, carbon steel and stainless steel 304 as material alternatives; availability for this construction must be confirmed.
  • Specify nominal diameter and base height.
  • The catalogue uses one photograph and dimensional drawing for the three sizes; the image is a family reference.

Technical & Ordering Data

Nominal size260 mm
Body materialStainless steel; exact grade by order
Seal materialSelect from the seal options below; confirm chemical compatibility
Connection / operationTank-top cover with hinged clamping arrangement; ordered base connection to be confirmed
Working pressureConfirm for the completed cover and selected seal
TemperatureSeal-dependent; see the individual seal-option limits
Drawing dimensions (mm)Nominal family drawing: φ260 / φ310 / φ360; other diameter labels are not fully legible.
NBR seal option−10 to +50 °C; 0.3 MPa sealing pressure
FKM seal option−20 to +120 °C; 0.3 MPa sealing pressure
Silicone rubber seal option−50 to +120 °C; 0.3 MPa sealing pressure
LKM seal option−40 to +140 °C; 0.3 MPa sealing pressure; material designation unexpanded in source
PTFE-covered silicone rubber seal option−70 to +200 °C; 0.1 MPa sealing pressure
PTFE packing seal option−100 to +200 °C; 0.1 MPa sealing pressure
PTFE seal option−100 to +200 °C; 0.1 MPa sealing pressure
Dimensions & Construction (1)

Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing before manufacture.

260 mm compact stainless-steel manhole cover — Original dimensional reference; verify dimensions before manufacture
Original dimensional reference; verify dimensions before manufacture

Confirm Before Order

  • Confirm stainless-steel grade, chemical compatibility and the complete seal specification before quotation.
  • The listed values apply to the seal options; confirm the working-pressure rating of the assembled cover.
  • The last stainless-steel grade in the family ordering line is cropped by the original page edge.
  • Request an approved dimensional drawing and pressure rating for the ordered size and base height.

Engineering Note

Seal-option limits are configuration-specific. Confirm the assembled cover rating and final installation drawing before ordering.

SIMEI FT-CMH-110 — 310 mm compact stainless-steel manhole cover
SIMEI FT-CMH-110

310 mm compact stainless-steel manhole cover

Top access and sealing for a chemical tanker; select the cover construction, base height and seal for the carried medium.

Technical details

Main features

  • Mirror-polished stainless-steel surface.
  • Provision for a lead seal.
  • Hinge opening stop helps prevent the open cover from striking the tank.
  • Nominal diameter, material and base height can be specified to suit the installation.
  • Compact construction for restricted installation space.

Available Configurations

  • Select the seal material for the carried medium, temperature and required sealing pressure.
  • The family ordering guide lists aluminium alloy, carbon steel and stainless steel 304 as material alternatives; availability for this construction must be confirmed.
  • Specify nominal diameter and base height.
  • The catalogue uses one photograph and dimensional drawing for the three sizes; the image is a family reference.

Technical & Ordering Data

Nominal size310 mm
Body materialStainless steel; exact grade by order
Seal materialSelect from the seal options below; confirm chemical compatibility
Connection / operationTank-top cover with hinged clamping arrangement; ordered base connection to be confirmed
Working pressureConfirm for the completed cover and selected seal
TemperatureSeal-dependent; see the individual seal-option limits
Drawing dimensions (mm)Nominal family drawing: φ260 / φ310 / φ360; other diameter labels are not fully legible.
NBR seal option−10 to +50 °C; 0.3 MPa sealing pressure
FKM seal option−20 to +120 °C; 0.3 MPa sealing pressure
Silicone rubber seal option−50 to +120 °C; 0.3 MPa sealing pressure
LKM seal option−40 to +140 °C; 0.3 MPa sealing pressure; material designation unexpanded in source
PTFE-covered silicone rubber seal option−70 to +200 °C; 0.1 MPa sealing pressure
PTFE packing seal option−100 to +200 °C; 0.1 MPa sealing pressure
PTFE seal option−100 to +200 °C; 0.1 MPa sealing pressure
Dimensions & Construction (1)

Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing before manufacture.

310 mm compact stainless-steel manhole cover — Original dimensional reference; verify dimensions before manufacture
Original dimensional reference; verify dimensions before manufacture

Confirm Before Order

  • Confirm stainless-steel grade, chemical compatibility and the complete seal specification before quotation.
  • The listed values apply to the seal options; confirm the working-pressure rating of the assembled cover.
  • The last stainless-steel grade in the family ordering line is cropped by the original page edge.
  • Request an approved dimensional drawing and pressure rating for the ordered size and base height.

Engineering Note

Seal-option limits are configuration-specific. Confirm the assembled cover rating and final installation drawing before ordering.

SIMEI FT-CMH-120 — 360 mm compact stainless-steel manhole cover
SIMEI FT-CMH-120

360 mm compact stainless-steel manhole cover

Top access and sealing for a chemical tanker; select the cover construction, base height and seal for the carried medium.

Technical details

Main features

  • Mirror-polished stainless-steel surface.
  • Provision for a lead seal.
  • Hinge opening stop helps prevent the open cover from striking the tank.
  • Nominal diameter, material and base height can be specified to suit the installation.
  • Compact construction for restricted installation space.

Available Configurations

  • Select the seal material for the carried medium, temperature and required sealing pressure.
  • The family ordering guide lists aluminium alloy, carbon steel and stainless steel 304 as material alternatives; availability for this construction must be confirmed.
  • Specify nominal diameter and base height.
  • The catalogue uses one photograph and dimensional drawing for the three sizes; the image is a family reference.

Technical & Ordering Data

Nominal size360 mm
Body materialStainless steel; exact grade by order
Seal materialSelect from the seal options below; confirm chemical compatibility
Connection / operationTank-top cover with hinged clamping arrangement; ordered base connection to be confirmed
Working pressureConfirm for the completed cover and selected seal
TemperatureSeal-dependent; see the individual seal-option limits
Drawing dimensions (mm)Nominal family drawing: φ260 / φ310 / φ360; other diameter labels are not fully legible.
NBR seal option−10 to +50 °C; 0.3 MPa sealing pressure
FKM seal option−20 to +120 °C; 0.3 MPa sealing pressure
Silicone rubber seal option−50 to +120 °C; 0.3 MPa sealing pressure
LKM seal option−40 to +140 °C; 0.3 MPa sealing pressure; material designation unexpanded in source
PTFE-covered silicone rubber seal option−70 to +200 °C; 0.1 MPa sealing pressure
PTFE packing seal option−100 to +200 °C; 0.1 MPa sealing pressure
PTFE seal option−100 to +200 °C; 0.1 MPa sealing pressure
Dimensions & Construction (1)

Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing before manufacture.

360 mm compact stainless-steel manhole cover — Original dimensional reference; verify dimensions before manufacture
Original dimensional reference; verify dimensions before manufacture

Confirm Before Order

  • Confirm stainless-steel grade, chemical compatibility and the complete seal specification before quotation.
  • The listed values apply to the seal options; confirm the working-pressure rating of the assembled cover.
  • The last stainless-steel grade in the family ordering line is cropped by the original page edge.
  • Request an approved dimensional drawing and pressure rating for the ordered size and base height.

Engineering Note

Seal-option limits are configuration-specific. Confirm the assembled cover rating and final installation drawing before ordering.

SIMEI FT-CMH-130 — 260 mm double-flange stainless-steel manhole cover
SIMEI FT-CMH-130

260 mm double-flange stainless-steel manhole cover

Top access and sealing for a chemical tanker; select the cover construction, base height and seal for the carried medium.

Technical details

Main features

  • Mirror-polished stainless-steel surface.
  • Provision for a lead seal.
  • Hinge opening stop helps prevent the open cover from striking the tank.
  • Nominal diameter, material and base height can be specified to suit the installation.
  • Compact construction for restricted installation space.
  • Double-flange sealing places the gasket in the lower cover.

Available Configurations

  • Select the seal material for the carried medium, temperature and required sealing pressure.
  • The family ordering guide lists aluminium alloy, carbon steel and stainless steel 304 as material alternatives; availability for this construction must be confirmed.
  • Specify nominal diameter and base height.
  • The catalogue uses one photograph and dimensional drawing for the three sizes; the image is a family reference.

Technical & Ordering Data

Nominal size260 mm
Body materialStainless steel; exact grade by order
Seal materialSelect from the seal options below; confirm chemical compatibility
Connection / operationTank-top cover with hinged clamping arrangement; ordered base connection to be confirmed
Working pressureConfirm for the completed cover and selected seal
TemperatureSeal-dependent; see the individual seal-option limits
Drawing dimensions (mm)Nominal family drawing: φ260 / φ310 / φ360; other diameter labels are not fully legible.
NBR seal option−10 to +50 °C; 0.3 MPa sealing pressure
FKM seal option−20 to +120 °C; 0.3 MPa sealing pressure
Silicone rubber seal option−50 to +120 °C; 0.3 MPa sealing pressure
LKM seal option−40 to +140 °C; 0.3 MPa sealing pressure; material designation unexpanded in source
PTFE-covered silicone rubber seal option−70 to +200 °C; 0.1 MPa sealing pressure
PTFE packing seal option−100 to +200 °C; 0.1 MPa sealing pressure
PTFE seal option−100 to +200 °C; 0.1 MPa sealing pressure
Dimensions & Construction (1)

Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing before manufacture.

260 mm double-flange stainless-steel manhole cover — Original dimensional reference; verify dimensions before manufacture
Original dimensional reference; verify dimensions before manufacture

Confirm Before Order

  • Confirm stainless-steel grade, chemical compatibility and the complete seal specification before quotation.
  • The listed values apply to the seal options; confirm the working-pressure rating of the assembled cover.
  • The last stainless-steel grade in the family ordering line is cropped by the original page edge.
  • Request an approved dimensional drawing and pressure rating for the ordered size and base height.

Engineering Note

Seal-option limits are configuration-specific. Confirm the assembled cover rating and final installation drawing before ordering.

SIMEI FT-CMH-140 — 310 mm double-flange stainless-steel manhole cover
SIMEI FT-CMH-140

310 mm double-flange stainless-steel manhole cover

Top access and sealing for a chemical tanker; select the cover construction, base height and seal for the carried medium.

Technical details

Main features

  • Mirror-polished stainless-steel surface.
  • Provision for a lead seal.
  • Hinge opening stop helps prevent the open cover from striking the tank.
  • Nominal diameter, material and base height can be specified to suit the installation.
  • Compact construction for restricted installation space.
  • Double-flange sealing places the gasket in the lower cover.

Available Configurations

  • Select the seal material for the carried medium, temperature and required sealing pressure.
  • The family ordering guide lists aluminium alloy, carbon steel and stainless steel 304 as material alternatives; availability for this construction must be confirmed.
  • Specify nominal diameter and base height.
  • The catalogue uses one photograph and dimensional drawing for the three sizes; the image is a family reference.

Technical & Ordering Data

Nominal size310 mm
Body materialStainless steel; exact grade by order
Seal materialSelect from the seal options below; confirm chemical compatibility
Connection / operationTank-top cover with hinged clamping arrangement; ordered base connection to be confirmed
Working pressureConfirm for the completed cover and selected seal
TemperatureSeal-dependent; see the individual seal-option limits
Drawing dimensions (mm)Nominal family drawing: φ260 / φ310 / φ360; other diameter labels are not fully legible.
NBR seal option−10 to +50 °C; 0.3 MPa sealing pressure
FKM seal option−20 to +120 °C; 0.3 MPa sealing pressure
Silicone rubber seal option−50 to +120 °C; 0.3 MPa sealing pressure
LKM seal option−40 to +140 °C; 0.3 MPa sealing pressure; material designation unexpanded in source
PTFE-covered silicone rubber seal option−70 to +200 °C; 0.1 MPa sealing pressure
PTFE packing seal option−100 to +200 °C; 0.1 MPa sealing pressure
PTFE seal option−100 to +200 °C; 0.1 MPa sealing pressure
Dimensions & Construction (1)

Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing before manufacture.

310 mm double-flange stainless-steel manhole cover — Original dimensional reference; verify dimensions before manufacture
Original dimensional reference; verify dimensions before manufacture

Confirm Before Order

  • Confirm stainless-steel grade, chemical compatibility and the complete seal specification before quotation.
  • The listed values apply to the seal options; confirm the working-pressure rating of the assembled cover.
  • The last stainless-steel grade in the family ordering line is cropped by the original page edge.
  • Request an approved dimensional drawing and pressure rating for the ordered size and base height.

Engineering Note

Seal-option limits are configuration-specific. Confirm the assembled cover rating and final installation drawing before ordering.

SIMEI FT-CMH-150 — 360 mm double-flange stainless-steel manhole cover
SIMEI FT-CMH-150

360 mm double-flange stainless-steel manhole cover

Top access and sealing for a chemical tanker; select the cover construction, base height and seal for the carried medium.

Technical details

Main features

  • Mirror-polished stainless-steel surface.
  • Provision for a lead seal.
  • Hinge opening stop helps prevent the open cover from striking the tank.
  • Nominal diameter, material and base height can be specified to suit the installation.
  • Compact construction for restricted installation space.
  • Double-flange sealing places the gasket in the lower cover.

Available Configurations

  • Select the seal material for the carried medium, temperature and required sealing pressure.
  • The family ordering guide lists aluminium alloy, carbon steel and stainless steel 304 as material alternatives; availability for this construction must be confirmed.
  • Specify nominal diameter and base height.
  • The catalogue uses one photograph and dimensional drawing for the three sizes; the image is a family reference.

Technical & Ordering Data

Nominal size360 mm
Body materialStainless steel; exact grade by order
Seal materialSelect from the seal options below; confirm chemical compatibility
Connection / operationTank-top cover with hinged clamping arrangement; ordered base connection to be confirmed
Working pressureConfirm for the completed cover and selected seal
TemperatureSeal-dependent; see the individual seal-option limits
Drawing dimensions (mm)Nominal family drawing: φ260 / φ310 / φ360; other diameter labels are not fully legible.
NBR seal option−10 to +50 °C; 0.3 MPa sealing pressure
FKM seal option−20 to +120 °C; 0.3 MPa sealing pressure
Silicone rubber seal option−50 to +120 °C; 0.3 MPa sealing pressure
LKM seal option−40 to +140 °C; 0.3 MPa sealing pressure; material designation unexpanded in source
PTFE-covered silicone rubber seal option−70 to +200 °C; 0.1 MPa sealing pressure
PTFE packing seal option−100 to +200 °C; 0.1 MPa sealing pressure
PTFE seal option−100 to +200 °C; 0.1 MPa sealing pressure
Dimensions & Construction (1)

Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing before manufacture.

360 mm double-flange stainless-steel manhole cover — Original dimensional reference; verify dimensions before manufacture
Original dimensional reference; verify dimensions before manufacture

Confirm Before Order

  • Confirm stainless-steel grade, chemical compatibility and the complete seal specification before quotation.
  • The listed values apply to the seal options; confirm the working-pressure rating of the assembled cover.
  • The last stainless-steel grade in the family ordering line is cropped by the original page edge.
  • Request an approved dimensional drawing and pressure rating for the ordered size and base height.

Engineering Note

Seal-option limits are configuration-specific. Confirm the assembled cover rating and final installation drawing before ordering.

SIMEI FT-CMH-160 — 260 mm stainless-steel access cover — size confirmation required
SIMEI FT-CMH-160

260 mm stainless-steel access cover — size confirmation required

Top access and sealing for a chemical tanker; select the cover construction, base height and seal for the carried medium.

Technical details

Main features

  • Mirror-polished stainless-steel surface.
  • Provision for a lead seal.
  • Hinge opening stop helps prevent the open cover from striking the tank.
  • Nominal diameter, material and base height can be specified to suit the installation.
  • Large-diameter base facilitates loading and access for maintenance.

Available Configurations

  • Select the seal material for the carried medium, temperature and required sealing pressure.
  • The family ordering guide lists aluminium alloy, carbon steel and stainless steel 304 as material alternatives; availability for this construction must be confirmed.
  • Specify nominal diameter and base height.
  • The catalogue uses one photograph and dimensional drawing for the three sizes; the image is a family reference.

Technical & Ordering Data

Nominal size260 mm in heading; drawing appears to show φ510
Body materialStainless steel; exact grade by order
Seal materialSelect from the seal options below; confirm chemical compatibility
Connection / operationTank-top cover with hinged clamping arrangement; ordered base connection to be confirmed
Working pressureConfirm for the completed cover and selected seal
TemperatureSeal-dependent; see the individual seal-option limits
Drawing dimensions (mm)Drawing labels appear φ510 and φ527; these do not match the size family in the heading.
NBR seal option−10 to +50 °C; 0.3 MPa sealing pressure
FKM seal option−20 to +120 °C; 0.3 MPa sealing pressure
Silicone rubber seal option−50 to +120 °C; 0.3 MPa sealing pressure
LKM seal option−40 to +140 °C; 0.3 MPa sealing pressure; material designation unexpanded in source
PTFE-covered silicone rubber seal option−70 to +200 °C; 0.1 MPa sealing pressure
PTFE packing seal option−100 to +200 °C; 0.1 MPa sealing pressure
PTFE seal option−100 to +200 °C; 0.1 MPa sealing pressure
Dimensions & Construction (1)

Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing before manufacture.

260 mm stainless-steel access cover — size confirmation required — Original dimensional reference; verify dimensions before manufacture
Original dimensional reference; verify dimensions before manufacture

Confirm Before Order

  • Confirm stainless-steel grade, chemical compatibility and the complete seal specification before quotation.
  • The listed values apply to the seal options; confirm the working-pressure rating of the assembled cover.
  • The last stainless-steel grade in the family ordering line is cropped by the original page edge.
  • Request an approved dimensional drawing and pressure rating for the ordered size and base height.
  • The repeated catalogue heading lists 260 / 310 / 360 mm, while this drawing appears to show φ510; nominal size and exact variant require confirmation.

Engineering Note

Seal-option limits are configuration-specific. Confirm the assembled cover rating and final installation drawing before ordering.

SIMEI FT-CMH-170 — 310 mm stainless-steel access cover — size confirmation required
SIMEI FT-CMH-170

310 mm stainless-steel access cover — size confirmation required

Top access and sealing for a chemical tanker; select the cover construction, base height and seal for the carried medium.

Technical details

Main features

  • Mirror-polished stainless-steel surface.
  • Provision for a lead seal.
  • Hinge opening stop helps prevent the open cover from striking the tank.
  • Nominal diameter, material and base height can be specified to suit the installation.
  • Large-diameter base facilitates loading and access for maintenance.

Available Configurations

  • Select the seal material for the carried medium, temperature and required sealing pressure.
  • The family ordering guide lists aluminium alloy, carbon steel and stainless steel 304 as material alternatives; availability for this construction must be confirmed.
  • Specify nominal diameter and base height.
  • The catalogue uses one photograph and dimensional drawing for the three sizes; the image is a family reference.

Technical & Ordering Data

Nominal size310 mm in heading; drawing appears to show φ510
Body materialStainless steel; exact grade by order
Seal materialSelect from the seal options below; confirm chemical compatibility
Connection / operationTank-top cover with hinged clamping arrangement; ordered base connection to be confirmed
Working pressureConfirm for the completed cover and selected seal
TemperatureSeal-dependent; see the individual seal-option limits
Drawing dimensions (mm)Drawing labels appear φ510 and φ527; these do not match the size family in the heading.
NBR seal option−10 to +50 °C; 0.3 MPa sealing pressure
FKM seal option−20 to +120 °C; 0.3 MPa sealing pressure
Silicone rubber seal option−50 to +120 °C; 0.3 MPa sealing pressure
LKM seal option−40 to +140 °C; 0.3 MPa sealing pressure; material designation unexpanded in source
PTFE-covered silicone rubber seal option−70 to +200 °C; 0.1 MPa sealing pressure
PTFE packing seal option−100 to +200 °C; 0.1 MPa sealing pressure
PTFE seal option−100 to +200 °C; 0.1 MPa sealing pressure
Dimensions & Construction (1)

Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing before manufacture.

310 mm stainless-steel access cover — size confirmation required — Original dimensional reference; verify dimensions before manufacture
Original dimensional reference; verify dimensions before manufacture

Confirm Before Order

  • Confirm stainless-steel grade, chemical compatibility and the complete seal specification before quotation.
  • The listed values apply to the seal options; confirm the working-pressure rating of the assembled cover.
  • The last stainless-steel grade in the family ordering line is cropped by the original page edge.
  • Request an approved dimensional drawing and pressure rating for the ordered size and base height.
  • The repeated catalogue heading lists 260 / 310 / 360 mm, while this drawing appears to show φ510; nominal size and exact variant require confirmation.

Engineering Note

Seal-option limits are configuration-specific. Confirm the assembled cover rating and final installation drawing before ordering.

SIMEI FT-CMH-180 — 360 mm stainless-steel access cover — size confirmation required
SIMEI FT-CMH-180

360 mm stainless-steel access cover — size confirmation required

Top access and sealing for a chemical tanker; select the cover construction, base height and seal for the carried medium.

Technical details

Main features

  • Mirror-polished stainless-steel surface.
  • Provision for a lead seal.
  • Hinge opening stop helps prevent the open cover from striking the tank.
  • Nominal diameter, material and base height can be specified to suit the installation.
  • Large-diameter base facilitates loading and access for maintenance.

Available Configurations

  • Select the seal material for the carried medium, temperature and required sealing pressure.
  • The family ordering guide lists aluminium alloy, carbon steel and stainless steel 304 as material alternatives; availability for this construction must be confirmed.
  • Specify nominal diameter and base height.
  • The catalogue uses one photograph and dimensional drawing for the three sizes; the image is a family reference.

Technical & Ordering Data

Nominal size360 mm in heading; drawing appears to show φ510
Body materialStainless steel; exact grade by order
Seal materialSelect from the seal options below; confirm chemical compatibility
Connection / operationTank-top cover with hinged clamping arrangement; ordered base connection to be confirmed
Working pressureConfirm for the completed cover and selected seal
TemperatureSeal-dependent; see the individual seal-option limits
Drawing dimensions (mm)Drawing labels appear φ510 and φ527; these do not match the size family in the heading.
NBR seal option−10 to +50 °C; 0.3 MPa sealing pressure
FKM seal option−20 to +120 °C; 0.3 MPa sealing pressure
Silicone rubber seal option−50 to +120 °C; 0.3 MPa sealing pressure
LKM seal option−40 to +140 °C; 0.3 MPa sealing pressure; material designation unexpanded in source
PTFE-covered silicone rubber seal option−70 to +200 °C; 0.1 MPa sealing pressure
PTFE packing seal option−100 to +200 °C; 0.1 MPa sealing pressure
PTFE seal option−100 to +200 °C; 0.1 MPa sealing pressure
Dimensions & Construction (1)

Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing before manufacture.

360 mm stainless-steel access cover — size confirmation required — Original dimensional reference; verify dimensions before manufacture
Original dimensional reference; verify dimensions before manufacture

Confirm Before Order

  • Confirm stainless-steel grade, chemical compatibility and the complete seal specification before quotation.
  • The listed values apply to the seal options; confirm the working-pressure rating of the assembled cover.
  • The last stainless-steel grade in the family ordering line is cropped by the original page edge.
  • Request an approved dimensional drawing and pressure rating for the ordered size and base height.
  • The repeated catalogue heading lists 260 / 310 / 360 mm, while this drawing appears to show φ510; nominal size and exact variant require confirmation.

Engineering Note

Seal-option limits are configuration-specific. Confirm the assembled cover rating and final installation drawing before ordering.

SIMEI FT-CMH-190 — 510 mm insulated stainless-steel manhole cover
SIMEI FT-CMH-190

510 mm insulated stainless-steel manhole cover

Top access and sealing for a chemical tanker; select the cover construction, base height and seal for the carried medium.

Technical details

Main features

  • Mirror-polished stainless-steel surface.
  • Provision for a lead seal.
  • Hinge opening stop helps prevent the open cover from striking the tank.
  • Nominal diameter, material and base height can be specified to suit the installation.
  • Insulation layer helps retain temperature when transporting crystallising media.

Available Configurations

  • Select the seal material for the carried medium, temperature and required sealing pressure.
  • The family ordering guide lists aluminium alloy, carbon steel and stainless steel 304 as material alternatives; availability for this construction must be confirmed.
  • Specify nominal diameter and base height.

Technical & Ordering Data

Nominal size510 mm
Body materialStainless steel; exact grade by order
Seal materialSelect from the seal options below; confirm chemical compatibility
Connection / operationTank-top cover with hinged clamping arrangement; ordered base connection to be confirmed
Working pressureConfirm for the completed cover and selected seal
TemperatureSeal-dependent; see the individual seal-option limits
Drawing dimensions (mm)φ510 opening/base reference; φ527 plan reference.
NBR seal option−10 to +50 °C; 0.3 MPa sealing pressure
FKM seal option−20 to +120 °C; 0.3 MPa sealing pressure
Silicone rubber seal option−50 to +120 °C; 0.3 MPa sealing pressure
LKM seal option−40 to +140 °C; 0.3 MPa sealing pressure; material designation unexpanded in source
PTFE-covered silicone rubber seal option−70 to +200 °C; 0.1 MPa sealing pressure
PTFE packing seal option−100 to +200 °C; 0.1 MPa sealing pressure
PTFE seal option−100 to +200 °C; 0.1 MPa sealing pressure
Dimensions & Construction (1)

Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing before manufacture.

510 mm insulated stainless-steel manhole cover — Original dimensional reference; verify dimensions before manufacture
Original dimensional reference; verify dimensions before manufacture

Confirm Before Order

  • Confirm stainless-steel grade, chemical compatibility and the complete seal specification before quotation.
  • The listed values apply to the seal options; confirm the working-pressure rating of the assembled cover.
  • The last stainless-steel grade in the family ordering line is cropped by the original page edge.
  • Request an approved dimensional drawing and pressure rating for the ordered size and base height.

Engineering Note

Seal-option limits are configuration-specific. Confirm the assembled cover rating and final installation drawing before ordering.

SIMEI FT-CMH-200 — 510 mm insulated double-flange manhole cover
SIMEI FT-CMH-200

510 mm insulated double-flange manhole cover

Top access and sealing for a chemical tanker; select the cover construction, base height and seal for the carried medium.

Technical details

Main features

  • Mirror-polished stainless-steel surface.
  • Provision for a lead seal.
  • Hinge opening stop helps prevent the open cover from striking the tank.
  • Nominal diameter, material and base height can be specified to suit the installation.
  • Insulation layer helps retain temperature when transporting crystallising media.
  • Double-flange sealing places the gasket in the lower cover.

Available Configurations

  • Select the seal material for the carried medium, temperature and required sealing pressure.
  • The family ordering guide lists aluminium alloy, carbon steel and stainless steel 304 as material alternatives; availability for this construction must be confirmed.
  • Specify nominal diameter and base height.

Technical & Ordering Data

Nominal size510 mm
Body materialStainless steel; exact grade by order
Seal materialSelect from the seal options below; confirm chemical compatibility
Connection / operationTank-top cover with hinged clamping arrangement; ordered base connection to be confirmed
Working pressureConfirm for the completed cover and selected seal
TemperatureSeal-dependent; see the individual seal-option limits
Drawing dimensions (mm)φ510 opening/base reference; φ527 plan reference.
NBR seal option−10 to +50 °C; 0.3 MPa sealing pressure
FKM seal option−20 to +120 °C; 0.3 MPa sealing pressure
Silicone rubber seal option−50 to +120 °C; 0.3 MPa sealing pressure
LKM seal option−40 to +140 °C; 0.3 MPa sealing pressure; material designation unexpanded in source
PTFE-covered silicone rubber seal option−70 to +200 °C; 0.1 MPa sealing pressure
PTFE packing seal option−100 to +200 °C; 0.1 MPa sealing pressure
PTFE seal option−100 to +200 °C; 0.1 MPa sealing pressure
Dimensions & Construction (1)

Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing before manufacture.

510 mm insulated double-flange manhole cover — Original dimensional reference; verify dimensions before manufacture
Original dimensional reference; verify dimensions before manufacture

Confirm Before Order

  • Confirm stainless-steel grade, chemical compatibility and the complete seal specification before quotation.
  • The listed values apply to the seal options; confirm the working-pressure rating of the assembled cover.
  • The last stainless-steel grade in the family ordering line is cropped by the original page edge.
  • Request an approved dimensional drawing and pressure rating for the ordered size and base height.

Engineering Note

Seal-option limits are configuration-specific. Confirm the assembled cover rating and final installation drawing before ordering.

SIMEI FT-CMH-210 — 510 mm double-cover stainless-steel manhole cover
SIMEI FT-CMH-210

510 mm double-cover stainless-steel manhole cover

Top access and sealing for a chemical tanker; select the cover construction, base height and seal for the carried medium.

Technical details

Main features

  • Mirror-polished stainless-steel surface.
  • Provision for a lead seal.
  • Hinge opening stop helps prevent the open cover from striking the tank.
  • Nominal diameter, material and base height can be specified to suit the installation.
  • Upper and lower covers open independently.
  • Use the upper opening for loading; open the lower cover for tank entry or repair access.

Available Configurations

  • Select the seal material for the carried medium, temperature and required sealing pressure.
  • The family ordering guide lists aluminium alloy, carbon steel and stainless steel 304 as material alternatives; availability for this construction must be confirmed.
  • Specify nominal diameter and base height.

Technical & Ordering Data

Nominal size510 mm
Body materialStainless steel; exact grade by order
Seal materialSelect from the seal options below; confirm chemical compatibility
Connection / operationTank-top cover with hinged clamping arrangement; ordered base connection to be confirmed
Working pressureConfirm for the completed cover and selected seal
TemperatureSeal-dependent; see the individual seal-option limits
Drawing dimensions (mm)φ510 main opening; φ527 outer plan reference; smaller-cover dimensions require confirmation.
NBR seal option−10 to +50 °C; 0.3 MPa sealing pressure
FKM seal option−20 to +120 °C; 0.3 MPa sealing pressure
Silicone rubber seal option−50 to +120 °C; 0.3 MPa sealing pressure
LKM seal option−40 to +140 °C; 0.3 MPa sealing pressure; material designation unexpanded in source
PTFE-covered silicone rubber seal option−70 to +200 °C; 0.1 MPa sealing pressure
PTFE packing seal option−100 to +200 °C; 0.1 MPa sealing pressure
PTFE seal option−100 to +200 °C; 0.1 MPa sealing pressure
Dimensions & Construction (1)

Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing before manufacture.

510 mm double-cover stainless-steel manhole cover — Original dimensional reference; verify dimensions before manufacture
Original dimensional reference; verify dimensions before manufacture

Confirm Before Order

  • Confirm stainless-steel grade, chemical compatibility and the complete seal specification before quotation.
  • The listed values apply to the seal options; confirm the working-pressure rating of the assembled cover.
  • The last stainless-steel grade in the family ordering line is cropped by the original page edge.
  • Request an approved dimensional drawing and pressure rating for the ordered size and base height.

Engineering Note

Seal-option limits are configuration-specific. Confirm the assembled cover rating and final installation drawing before ordering.

SIMEI FT-CMH-220 — Cylinder-buckle stainless-steel manhole cover
SIMEI FT-CMH-220

Cylinder-buckle stainless-steel manhole cover

Top access and sealing for a chemical tanker; select the cover construction, base height and seal for the carried medium.

Technical details

Main features

  • Mirror-polished stainless-steel surface.
  • Provision for a lead seal.
  • Hinge opening stop helps prevent the open cover from striking the tank.
  • Nominal diameter, material and base height can be specified to suit the installation.
  • Cylinder-buckle fastening facilitates opening and closing.
  • Double-flange sealing places the gasket in the lower cover.

Available Configurations

  • Select the seal material for the carried medium, temperature and required sealing pressure.
  • The family ordering guide lists aluminium alloy, carbon steel and stainless steel 304 as material alternatives; availability for this construction must be confirmed.
  • Specify nominal diameter and base height.

Technical & Ordering Data

Nominal size436 / 608 mm family sizes
Body materialStainless steel; exact grade by order
Seal materialSelect from the seal options below; confirm chemical compatibility
Connection / operationTank-top cover with hinged clamping arrangement; ordered base connection to be confirmed
Working pressureConfirm for the completed cover and selected seal
TemperatureSeal-dependent; see the individual seal-option limits
Drawing dimensions (mm)φ436 / φ608 shown in section; plan diameter labels are too small to transcribe confidently.
NBR seal option−10 to +50 °C; 0.3 MPa sealing pressure
FKM seal option−20 to +120 °C; 0.3 MPa sealing pressure
Silicone rubber seal option−50 to +120 °C; 0.3 MPa sealing pressure
LKM seal option−40 to +140 °C; 0.3 MPa sealing pressure; material designation unexpanded in source
PTFE-covered silicone rubber seal option−70 to +200 °C; 0.1 MPa sealing pressure
PTFE packing seal option−100 to +200 °C; 0.1 MPa sealing pressure
PTFE seal option−100 to +200 °C; 0.1 MPa sealing pressure
Dimensions & Construction (1)

Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing before manufacture.

Cylinder-buckle stainless-steel manhole cover — Original dimensional reference; verify dimensions before manufacture
Original dimensional reference; verify dimensions before manufacture

Confirm Before Order

  • Confirm stainless-steel grade, chemical compatibility and the complete seal specification before quotation.
  • The listed values apply to the seal options; confirm the working-pressure rating of the assembled cover.
  • The last stainless-steel grade in the family ordering line is cropped by the original page edge.
  • Request an approved dimensional drawing and pressure rating for the ordered size and base height.

Engineering Note

Seal-option limits are configuration-specific. Confirm the assembled cover rating and final installation drawing before ordering.

SIMEI FT-CMH-230 — 510 mm stainless-steel manhole cover with P/V vent
SIMEI FT-CMH-230

510 mm stainless-steel manhole cover with P/V vent

Top access and sealing for a chemical tanker; select the cover construction, base height and seal for the carried medium.

Technical details

Main features

  • Mirror-polished stainless-steel surface.
  • Provision for a lead seal.
  • Hinge opening stop helps prevent the open cover from striking the tank.
  • Nominal diameter, material and base height can be specified to suit the installation.
  • Pressure/vacuum vent balances internal and external tank pressure.
  • Full-sealing tank-top construction tightened by a rotary handle.
  • Cover is formed from stainless-steel plate; roll-formed stainless-steel base can be welded directly to the tank.

Available Configurations

  • Select the seal material for the carried medium, temperature and required sealing pressure.
  • The family ordering guide lists aluminium alloy, carbon steel and stainless steel 304 as material alternatives; availability for this construction must be confirmed.
  • Specify nominal diameter and base height.
  • Integrated pressure/vacuum vent.
  • Hinge stop, lead-seal device and rotary handle details are illustrated.

Technical & Ordering Data

Nominal size510 mm
Body materialStainless steel; exact grade by order
Seal materialSelect from the seal options below; confirm chemical compatibility
Connection / operationTank-top cover with hinged clamping arrangement; ordered base connection to be confirmed
Working pressureConfirm for the completed cover and selected seal
TemperatureSeal-dependent; see the individual seal-option limits
Drawing dimensions (mm)φ510 opening/base reference; φ527 plan reference.
NBR seal option−10 to +50 °C; 0.3 MPa sealing pressure
FKM seal option−20 to +120 °C; 0.3 MPa sealing pressure
Silicone rubber seal option−50 to +120 °C; 0.3 MPa sealing pressure
LKM seal option−40 to +140 °C; 0.3 MPa sealing pressure; material designation unexpanded in source
PTFE-covered silicone rubber seal option−70 to +200 °C; 0.1 MPa sealing pressure
PTFE packing seal option−100 to +200 °C; 0.1 MPa sealing pressure
PTFE seal option−100 to +200 °C; 0.1 MPa sealing pressure
510 mm stainless-steel manhole cover with P/V vent — Hinge with opening stop
Hinge with opening stop
510 mm stainless-steel manhole cover with P/V vent — Lead-seal provision
Lead-seal provision
510 mm stainless-steel manhole cover with P/V vent — Rotary clamping handle
Rotary clamping handle
Dimensions & Construction (1)

Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing before manufacture.

510 mm stainless-steel manhole cover with P/V vent — Original dimensional reference; verify dimensions before manufacture
Original dimensional reference; verify dimensions before manufacture

Confirm Before Order

  • Confirm stainless-steel grade, chemical compatibility and the complete seal specification before quotation.
  • The listed values apply to the seal options; confirm the working-pressure rating of the assembled cover.
  • The last stainless-steel grade in the family ordering line is cropped by the original page edge.
  • Request an approved dimensional drawing and pressure rating for the ordered size and base height.

Engineering Note

Seal-option limits are configuration-specific. Confirm the assembled cover rating and final installation drawing before ordering.

SIMEI FT-CMH-240 — 500 mm hooped chemical-tanker manhole cover
SIMEI FT-CMH-240

500 mm hooped chemical-tanker manhole cover

Top access and sealing for a chemical tanker; select the cover construction, base height and seal for the carried medium.

Technical details

Main features

  • Blank accessory holes can be configured to order.
  • Pressed-plate construction with diameter available to order.
  • Hoop mounting is described as the installation method.

Available Configurations

  • Select the seal material for the carried medium, temperature and required sealing pressure.
  • The family ordering guide lists aluminium alloy, carbon steel and stainless steel 304 as material alternatives; availability for this construction must be confirmed.
  • Specify nominal diameter and base height.
  • Blank holes may accept a vapour vent valve, optic sensor, pressure gauge, dip tube or external P/V vent.
  • Internal P/V vent and secondary-opening device are illustrated.

Technical & Ordering Data

Nominal size500 mm model designation; source outer diameter 20 inches
Body materialStainless steel; exact grade by order
Seal materialSelect from the seal options below; confirm chemical compatibility
Connection / operationHoop mounting; pressed-plate cover
Working pressureConfirm for the completed cover and selected seal
TemperatureSeal-dependent; see the individual seal-option limits
Drawing dimensions (mm)Main section reference appears φ500; additional plan and accessory dimensions require confirmation.
NBR seal option−10 to +50 °C; 0.3 MPa sealing pressure
FKM seal option−20 to +120 °C; 0.3 MPa sealing pressure
Silicone rubber seal option−50 to +120 °C; 0.3 MPa sealing pressure
LKM seal option−40 to +140 °C; 0.3 MPa sealing pressure; material designation unexpanded in source
PTFE-covered silicone rubber seal option−70 to +200 °C; 0.1 MPa sealing pressure
PTFE packing seal option−100 to +200 °C; 0.1 MPa sealing pressure
PTFE seal option−100 to +200 °C; 0.1 MPa sealing pressure
500 mm hooped chemical-tanker manhole cover — Internal pressure/vacuum vent
Internal pressure/vacuum vent
500 mm hooped chemical-tanker manhole cover — Secondary opening device
Secondary opening device
Dimensions & Construction (1)

Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing before manufacture.

500 mm hooped chemical-tanker manhole cover — Original dimensional reference; verify dimensions before manufacture
Original dimensional reference; verify dimensions before manufacture

Confirm Before Order

  • Confirm stainless-steel grade, chemical compatibility and the complete seal specification before quotation.
  • The listed values apply to the seal options; confirm the working-pressure rating of the assembled cover.
  • The last stainless-steel grade in the family ordering line is cropped by the original page edge.
  • Request an approved dimensional drawing and pressure rating for the ordered size and base height.

Engineering Note

Seal-option limits are configuration-specific. Confirm the assembled cover rating and final installation drawing before ordering.

SIMEI FT-CMH-250 — Deep-base double-flange stainless-steel manhole cover
SIMEI FT-CMH-250

Deep-base double-flange stainless-steel manhole cover

Top access and sealing for a chemical tanker; select the cover construction, base height and seal for the carried medium.

Technical details

Main features

  • Mirror-polished stainless-steel surface.
  • Provision for a lead seal.
  • Hinge opening stop helps prevent the open cover from striking the tank.
  • Nominal diameter, material and base height can be specified to suit the installation.
  • Compact installation arrangement.
  • Deep lower base shown in the product photograph.
  • Double-flange sealing places the gasket in the lower cover.

Available Configurations

  • Select the seal material for the carried medium, temperature and required sealing pressure.
  • The family ordering guide lists aluminium alloy, carbon steel and stainless steel 304 as material alternatives; availability for this construction must be confirmed.
  • Specify nominal diameter and base height.

Technical & Ordering Data

Nominal size260 / 310 / 360 mm in duplicated heading; drawing appears φ510
Body materialStainless steel; exact grade by order
Seal materialSelect from the seal options below; confirm chemical compatibility
Connection / operationTank-top cover with hinged clamping arrangement; ordered base connection to be confirmed
Working pressureConfirm for the completed cover and selected seal
TemperatureSeal-dependent; see the individual seal-option limits
Drawing dimensions (mm)Drawing labels appear φ510 and φ527; heading and figure conflict.
NBR seal option−10 to +50 °C; 0.3 MPa sealing pressure
FKM seal option−20 to +120 °C; 0.3 MPa sealing pressure
Silicone rubber seal option−50 to +120 °C; 0.3 MPa sealing pressure
LKM seal option−40 to +140 °C; 0.3 MPa sealing pressure; material designation unexpanded in source
PTFE-covered silicone rubber seal option−70 to +200 °C; 0.1 MPa sealing pressure
PTFE packing seal option−100 to +200 °C; 0.1 MPa sealing pressure
PTFE seal option−100 to +200 °C; 0.1 MPa sealing pressure
Dimensions & Construction (1)

Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing before manufacture.

Deep-base double-flange stainless-steel manhole cover — Original dimensional reference; verify dimensions before manufacture
Original dimensional reference; verify dimensions before manufacture

Confirm Before Order

  • Confirm stainless-steel grade, chemical compatibility and the complete seal specification before quotation.
  • The listed values apply to the seal options; confirm the working-pressure rating of the assembled cover.
  • The last stainless-steel grade in the family ordering line is cropped by the original page edge.
  • Request an approved dimensional drawing and pressure rating for the ordered size and base height.
  • The repeated catalogue heading lists 260 / 310 / 360 mm, while this drawing appears to show φ510; nominal size and exact variant require confirmation.
  • Provisional separate configuration: confirm orderable identity before quotation.

Engineering Note

Seal-option limits are configuration-specific. Confirm the assembled cover rating and final installation drawing before ordering.

SIMEI FT-SV-100 — 80 mm bursting-disc safety valve
SIMEI FT-SV-100

80 mm bursting-disc safety valve

Tank-top emergency relief assembly that opens when internal pressure exceeds its specified release setting.

Technical details

Main features

  • Mounted on the top of the tank for pressure-relief duty.
  • Opening pressure and sealing-ring material are selected to order.
  • Bursting disc provides non-reclosing relief after operation.
  • The disc setting is stated as 0.02 MPa above the safety-valve opening pressure.
  • Replace the bursting disc after it operates.
  • The description refers to relief under excessive pressure or vacuum; confirm the selected disc arrangement and setpoints.

Available Configurations

  • Body materials offered in the ordering guide: carbon steel, stainless steel 304 or stainless steel 316.
  • Specify the opening pressure and sealing-ring material.
  • Replaceable bursting-disc device.

Technical & Ordering Data

Nominal size80 mm model designation; source nominal diameter / outer-diameter text: 3 inches
Body materialFamily material: stainless steel; carbon steel, stainless steel 304 and 316 are also offered
Seal materialOrder-specific; confirm before quotation
Connection / operationFlanged; automatic pressure-relief action
Nominal pressure (family data)0.6 MPa
Opening-pressure field (ambiguous source label)0.05–0.4 MPa, labelled “Negative Opening Pressure”; confirm engineering meaning and setpoint
Temperature range (family data)−20 to +120 °C; confirm seal and model applicability
Drawing dimensions (mm)φ125 top; φ190.5 flange reference; 88 horizontal reference; G1/4 port. Other heights and bolt-circle labels require confirmation.
80 mm bursting-disc safety valve — Replaceable bursting-disc device
Replaceable bursting-disc device
Dimensions & Construction (1)

Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing before manufacture.

80 mm bursting-disc safety valve — Original dimensional reference; verify dimensions before manufacture
Original dimensional reference; verify dimensions before manufacture

Confirm Before Order

  • Confirm positive-pressure setpoint, vacuum setpoint where applicable, flow capacity, seal compatibility and certified test basis.
  • The family data labels 0.05–0.4 MPa as “Negative Opening Pressure”. The meaning/sign is ambiguous and must be confirmed; it is not a validated vacuum rating.
  • Confirm that the family data applies to the selected safety-valve configuration.
  • Confirm the disc burst pressure and the stated 0.02 MPa offset relative to the valve setting.

Engineering Note

Setpoints and flow performance require an approved valve specification. Do not select a safety valve from nominal pressure alone.

SIMEI FT-SV-110 — 80 mm pressure safety valve with gauge port
SIMEI FT-SV-110

80 mm pressure safety valve with gauge port

Tank-top pressure safety valve with a connection for monitoring tank pressure.

Technical details

Main features

  • Mounted on the top of the tank for pressure-relief duty.
  • Opening pressure and sealing-ring material are selected to order.
  • Gauge tapping accepts a pressure gauge for observing tank pressure.

Available Configurations

  • Body materials offered in the ordering guide: carbon steel, stainless steel 304 or stainless steel 316.
  • Specify the opening pressure and sealing-ring material.
  • Pressure-gauge connection; gauge supply to be specified.

Technical & Ordering Data

Nominal size80 mm model designation; source nominal diameter / outer-diameter text: 3 inches
Body materialFamily material: stainless steel; carbon steel, stainless steel 304 and 316 are also offered
Seal materialOrder-specific; confirm before quotation
Connection / operationFlanged; automatic pressure-relief action
Nominal pressure (family data)0.6 MPa
Opening-pressure field (ambiguous source label)0.05–0.4 MPa, labelled “Negative Opening Pressure”; confirm engineering meaning and setpoint
Temperature range (family data)−20 to +120 °C; confirm seal and model applicability
Drawing dimensions (mm)φ125 top; φ160.5 flange reference; 120 overall height; φ152.5 and φ145 plan references; G1/4 port. Confirm small vertical dimensions.
80 mm pressure safety valve with gauge port — Pressure-gauge connection
Pressure-gauge connection
Dimensions & Construction (1)

Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing before manufacture.

80 mm pressure safety valve with gauge port — Original dimensional reference; verify dimensions before manufacture
Original dimensional reference; verify dimensions before manufacture

Confirm Before Order

  • Confirm positive-pressure setpoint, vacuum setpoint where applicable, flow capacity, seal compatibility and certified test basis.
  • The family data labels 0.05–0.4 MPa as “Negative Opening Pressure”. The meaning/sign is ambiguous and must be confirmed; it is not a validated vacuum rating.
  • Confirm that the family data applies to the selected safety-valve configuration.

Engineering Note

Setpoints and flow performance require an approved valve specification. Do not select a safety valve from nominal pressure alone.

SIMEI FT-SV-120 — 80 mm positive/negative-pressure safety valve
SIMEI FT-SV-120

80 mm positive/negative-pressure safety valve

Tank-top valve intended to relieve excess pressure and balance vacuum between the tank interior and atmosphere.

Technical details

Main features

  • Mounted on the top of the tank for pressure-relief duty.
  • Opening pressure and sealing-ring material are selected to order.
  • Gauge tapping accepts a pressure gauge for observing tank pressure.
  • Negative-pressure mechanism is described as balancing pressure inside and outside the tank.

Available Configurations

  • Body materials offered in the ordering guide: carbon steel, stainless steel 304 or stainless steel 316.
  • Specify the opening pressure and sealing-ring material.
  • Pressure-gauge connection; gauge supply to be specified.
  • Negative-pressure mechanism.

Technical & Ordering Data

Nominal size80 mm model designation; source nominal diameter / outer-diameter text: 3 inches
Body materialFamily material: stainless steel; carbon steel, stainless steel 304 and 316 are also offered
Seal materialOrder-specific; confirm before quotation
Connection / operationFlanged; automatic pressure-relief action
Nominal pressure (family data)0.6 MPa
Opening-pressure field (ambiguous source label)0.05–0.4 MPa, labelled “Negative Opening Pressure”; confirm engineering meaning and setpoint
Temperature range (family data)−20 to +120 °C; confirm seal and model applicability
Drawing dimensions (mm)φ125 top; φ130.5 / φ152.5 / φ145 plan references; 88 horizontal reference; G1/4 port. Confirm height and port position.
80 mm positive/negative-pressure safety valve — Pressure-gauge connection
Pressure-gauge connection
80 mm positive/negative-pressure safety valve — Negative-pressure mechanism
Negative-pressure mechanism
Dimensions & Construction (1)

Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing before manufacture.

80 mm positive/negative-pressure safety valve — Original dimensional reference; verify dimensions before manufacture
Original dimensional reference; verify dimensions before manufacture

Confirm Before Order

  • Confirm positive-pressure setpoint, vacuum setpoint where applicable, flow capacity, seal compatibility and certified test basis.
  • The family data labels 0.05–0.4 MPa as “Negative Opening Pressure”. The meaning/sign is ambiguous and must be confirmed; it is not a validated vacuum rating.
  • Confirm that the family data applies to the selected safety-valve configuration.

Engineering Note

Setpoints and flow performance require an approved valve specification. Do not select a safety valve from nominal pressure alone.

SIMEI ENERGY

Selection and ordering

Send the SIMEI code, quantity, transported medium, operating conditions and mating drawing. Confirm materials, seals, interfaces and operating requirements before ordering.

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