LanguageWeir type diaphragm valves (400 type)
Basic diaphragm valves! Excellent corrosion and chemical resistance and a wide range of applications!
Features
This is the basic type of diaphragm valves with weir in the flow path. Close contact between the diaphragm and the weir maintains airtightness and provides high valve seat sealing performance.
Since there are many types of materials for the main bodies and diaphragms, and the materials can be selected according to the composition of fluids such as rubber and fluorocarbon resin, the most suitable selection is available, when high cost performance and corrosion resistance and chemical resistance are required.
Actuators can be selected according to the application as well.
 |  |
| Manual Valve (with handwheel) 400 type | Pneumatically Operated Valve (ON-OFF type) PO1400N type |
 |  |
| Pneumatically Operated Control Valve BO3400 type | Electrically Operated Valve MS4400 type |
Body specifications
Details of body specifications
In addition to cast iron and stainless steel cast steel, we manufacture lined valve bodies that are suitable for corrosion and chemical resistance and wear resistance.
Suitable selection are available from an extensive lineup according to your usage conditions.
Other special materials are available, please contact our sales representatives.
Standard lineup
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| 400 type (Flange type) | 400L type (Flange type)(*1) |
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| 400Rc type (Screw type)(*2) | 400SW (Welding type)(*2) |
(*1):Metal body, rubber body, polyethylene body only (*2): Metal body only
| Body type | Material |
|---|---|
| Metal body | Gray cast iron, Ductile iron cast iron, Various stainless steels, Hot dip galvanizing, etc. |
| Rubber lining | Hard natural rubber lining, Soft natural rubber lining, Chloroprene rubber lining, Butyl rubber lining |
| Synthetic resin lining | PFA lining, ETFE lining, Polyethylene lining |
| Other | Glass lining, porcelain (ceramic) lining |
It is necessary to select the material for the diaphragm valve according to the user's operating conditions. Please refer to the catalog and drawings for the details of the product and the specifications, or contact our sales representative.
Diaphragm specifications
Details of diaphragm specifications
Diaphragms are divided into two types: rubber and fluorocarbon resin.
Our diaphragms are subjected to various tests under severe conditions to confirm their durability and safety. It is highly reliable for external seals and valve seat seals and has been used in a wide range of industries for years.
Suitable selection are available from an extensive lineup according to your usage conditions.
Standard lineup
 |  |
| Rubber diaphragm | Fluorocarbon resin diaphragm |
| Diaphragm type | Materials |
|---|---|
| Rubber diaphragm | Natural rubber, Chloroprene rubber, Butyl rubber, Nitrile rubber, EPDM |
| Fluorocarbon resin diaphragm | NEW PTFE/EPDM, NEW PTFE/EPDM+α(*3) |
(*3): EPDM + α was developed by us to improve the heat resistance of EPDM.
It is necessary to select the material for the diaphragm valve according to the user's operating conditions. Please refer to the catalog and drawings for the details of the product and the specifications, or contact our sales representative.
