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 codesProduct models and configurations
SIMEI FT-CMH-100260 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

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 detailsMain 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 size | 260 mm |
|---|---|
| Body material | Stainless steel; exact grade by order |
| Seal material | Select from the seal options below; confirm chemical compatibility |
| Connection / operation | Tank-top cover with hinged clamping arrangement; ordered base connection to be confirmed |
| Working pressure | Confirm for the completed cover and selected seal |
| Temperature | Seal-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.
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-110310 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

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 detailsMain 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 size | 310 mm |
|---|---|
| Body material | Stainless steel; exact grade by order |
| Seal material | Select from the seal options below; confirm chemical compatibility |
| Connection / operation | Tank-top cover with hinged clamping arrangement; ordered base connection to be confirmed |
| Working pressure | Confirm for the completed cover and selected seal |
| Temperature | Seal-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.
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-120360 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

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 detailsMain 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 size | 360 mm |
|---|---|
| Body material | Stainless steel; exact grade by order |
| Seal material | Select from the seal options below; confirm chemical compatibility |
| Connection / operation | Tank-top cover with hinged clamping arrangement; ordered base connection to be confirmed |
| Working pressure | Confirm for the completed cover and selected seal |
| Temperature | Seal-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.
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-130260 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

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 detailsMain 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 size | 260 mm |
|---|---|
| Body material | Stainless steel; exact grade by order |
| Seal material | Select from the seal options below; confirm chemical compatibility |
| Connection / operation | Tank-top cover with hinged clamping arrangement; ordered base connection to be confirmed |
| Working pressure | Confirm for the completed cover and selected seal |
| Temperature | Seal-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.
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-140310 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

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 detailsMain 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 size | 310 mm |
|---|---|
| Body material | Stainless steel; exact grade by order |
| Seal material | Select from the seal options below; confirm chemical compatibility |
| Connection / operation | Tank-top cover with hinged clamping arrangement; ordered base connection to be confirmed |
| Working pressure | Confirm for the completed cover and selected seal |
| Temperature | Seal-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.
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-150360 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

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 detailsMain 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 size | 360 mm |
|---|---|
| Body material | Stainless steel; exact grade by order |
| Seal material | Select from the seal options below; confirm chemical compatibility |
| Connection / operation | Tank-top cover with hinged clamping arrangement; ordered base connection to be confirmed |
| Working pressure | Confirm for the completed cover and selected seal |
| Temperature | Seal-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.
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-160260 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

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 detailsMain 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 size | 260 mm in heading; drawing appears to show φ510 |
|---|---|
| Body material | Stainless steel; exact grade by order |
| Seal material | Select from the seal options below; confirm chemical compatibility |
| Connection / operation | Tank-top cover with hinged clamping arrangement; ordered base connection to be confirmed |
| Working pressure | Confirm for the completed cover and selected seal |
| Temperature | Seal-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.
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-170310 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

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 detailsMain 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 size | 310 mm in heading; drawing appears to show φ510 |
|---|---|
| Body material | Stainless steel; exact grade by order |
| Seal material | Select from the seal options below; confirm chemical compatibility |
| Connection / operation | Tank-top cover with hinged clamping arrangement; ordered base connection to be confirmed |
| Working pressure | Confirm for the completed cover and selected seal |
| Temperature | Seal-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.
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-180360 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

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 detailsMain 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 size | 360 mm in heading; drawing appears to show φ510 |
|---|---|
| Body material | Stainless steel; exact grade by order |
| Seal material | Select from the seal options below; confirm chemical compatibility |
| Connection / operation | Tank-top cover with hinged clamping arrangement; ordered base connection to be confirmed |
| Working pressure | Confirm for the completed cover and selected seal |
| Temperature | Seal-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.
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-190510 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

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 detailsMain 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 size | 510 mm |
|---|---|
| Body material | Stainless steel; exact grade by order |
| Seal material | Select from the seal options below; confirm chemical compatibility |
| Connection / operation | Tank-top cover with hinged clamping arrangement; ordered base connection to be confirmed |
| Working pressure | Confirm for the completed cover and selected seal |
| Temperature | Seal-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.
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-200510 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

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 detailsMain 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 size | 510 mm |
|---|---|
| Body material | Stainless steel; exact grade by order |
| Seal material | Select from the seal options below; confirm chemical compatibility |
| Connection / operation | Tank-top cover with hinged clamping arrangement; ordered base connection to be confirmed |
| Working pressure | Confirm for the completed cover and selected seal |
| Temperature | Seal-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.
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-210510 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

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 detailsMain 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 size | 510 mm |
|---|---|
| Body material | Stainless steel; exact grade by order |
| Seal material | Select from the seal options below; confirm chemical compatibility |
| Connection / operation | Tank-top cover with hinged clamping arrangement; ordered base connection to be confirmed |
| Working pressure | Confirm for the completed cover and selected seal |
| Temperature | Seal-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.
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-220Cylinder-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

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 detailsMain 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 size | 436 / 608 mm family sizes |
|---|---|
| Body material | Stainless steel; exact grade by order |
| Seal material | Select from the seal options below; confirm chemical compatibility |
| Connection / operation | Tank-top cover with hinged clamping arrangement; ordered base connection to be confirmed |
| Working pressure | Confirm for the completed cover and selected seal |
| Temperature | Seal-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.
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-230510 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

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 detailsMain 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 size | 510 mm |
|---|---|
| Body material | Stainless steel; exact grade by order |
| Seal material | Select from the seal options below; confirm chemical compatibility |
| Connection / operation | Tank-top cover with hinged clamping arrangement; ordered base connection to be confirmed |
| Working pressure | Confirm for the completed cover and selected seal |
| Temperature | Seal-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.
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-240500 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

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 detailsMain 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 size | 500 mm model designation; source outer diameter 20 inches |
|---|---|
| Body material | Stainless steel; exact grade by order |
| Seal material | Select from the seal options below; confirm chemical compatibility |
| Connection / operation | Hoop mounting; pressed-plate cover |
| Working pressure | Confirm for the completed cover and selected seal |
| Temperature | Seal-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 |
Dimensions & Construction (1)
Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing 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-250Deep-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

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 detailsMain 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 size | 260 / 310 / 360 mm in duplicated heading; drawing appears φ510 |
|---|---|
| Body material | Stainless steel; exact grade by order |
| Seal material | Select from the seal options below; confirm chemical compatibility |
| Connection / operation | Tank-top cover with hinged clamping arrangement; ordered base connection to be confirmed |
| Working pressure | Confirm for the completed cover and selected seal |
| Temperature | Seal-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.
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-10080 mm bursting-disc safety valve
Tank-top emergency relief assembly that opens when internal pressure exceeds its specified release setting.
Technical details

80 mm bursting-disc safety valve
Tank-top emergency relief assembly that opens when internal pressure exceeds its specified release setting.
Technical detailsMain 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 size | 80 mm model designation; source nominal diameter / outer-diameter text: 3 inches |
|---|---|
| Body material | Family material: stainless steel; carbon steel, stainless steel 304 and 316 are also offered |
| Seal material | Order-specific; confirm before quotation |
| Connection / operation | Flanged; 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. |
Dimensions & Construction (1)
Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing 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-11080 mm pressure safety valve with gauge port
Tank-top pressure safety valve with a connection for monitoring tank pressure.
Technical details

80 mm pressure safety valve with gauge port
Tank-top pressure safety valve with a connection for monitoring tank pressure.
Technical detailsMain 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 size | 80 mm model designation; source nominal diameter / outer-diameter text: 3 inches |
|---|---|
| Body material | Family material: stainless steel; carbon steel, stainless steel 304 and 316 are also offered |
| Seal material | Order-specific; confirm before quotation |
| Connection / operation | Flanged; 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. |
Dimensions & Construction (1)
Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing 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-12080 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

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 detailsMain 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 size | 80 mm model designation; source nominal diameter / outer-diameter text: 3 inches |
|---|---|
| Body material | Family material: stainless steel; carbon steel, stainless steel 304 and 316 are also offered |
| Seal material | Order-specific; confirm before quotation |
| Connection / operation | Flanged; 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. |
Dimensions & Construction (1)
Drawings are selection references. Confirm dimensions, tolerances and interfaces against the approved drawing 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.




























