Diaphragm Valve
Manufactured to BS - 5156 for bubble-tight sealing and long cycle life.
FLOECDiaphragm Valves are designed and manufactured as per BS 5156. They are widely utilized in water treatment plants, fertilizer & petrochemical industries, pharmaceutical units, chemical process units, refineries and power plants. They are most appropriate for positive pressure and high vacuum conditions. An extensive range of materials are available to handle almost all operations within its pressure-temperature limitations.
2 Configurations AvailableDiaphragm Valve Electric Actuator Operator · Diaphragm Valve Manual Operator with Open-Close Indication
Precision engineered for zero passing & heavy service.
Total wet area and working parts are kept from coming in contact with the working media by appropriate lining with different qualities of Rubber; PTFE/PFE etc. to make it certain that it handles extremely corrosive fluids efficiently and safely.
Maintenance of these Valves is extremely simple. By dismantle the Bonnet from the Body, the whole Trim Assembly can be taken out for maintenance while the Body will remain in the Pipeline. Hence the design allows online maintenance to save time and energy. Its linear flow characteristics, makes it perfect for throttling or modulating operations. On/off and control automation is supplied with Pneumatic Actuators or Cylinders.
FLOEC Diaphragm Valves are supplied in a wide-ranging material like Cast Iron, S.G. Iron, Cast Carbon Steel, and Stainless Steel of all grades, High Alloy Steels like Ally-20, CD4MCu, and Hastelloy etc. Size range starts from 15NB to 250NB and pressure rating range from ASME 125# / 150# / PN.
Key Capability Highlights
- Size Coverage: 15 NB through 250 NB
- Pressure Range: ASME 125/ 150# / PN10 / PN16 / PN25
- Compliance Standard: BS - 5156
100% factory hydrotested to API 598 / BS 6755 Part-I. Available in customized metallurgy, port openings, and automated pneumatic/electric actuator assemblies.
Diaphragm Valve Engineering Parameters
| Parameter | Specification Range & Standards |
|---|---|
| Size Range | 15 NB through 250 NB |
| Pressure Rating | ASME 125/ 150# / PN10 / PN16 / PN25 |
| Type | Screw Down - Fully Rubber Lined / Unlined Body |
| End Connection | Flanged and Threaded |
| Operation | Hand Wheel / Manual Gear / Electric Motor Actuator |
| Port Opening | Full |
| Seat | Soft Rubber / PFA / Integral |
| Disc | Equivalent Body Material with Rubber Lining / PTFE Lamination |
| Gasket & Packing | NA |
| MOC | Refer Material Chart |
| Design Code | BS - 5156 |
| Testing | API - 598 / BS 6755 |
| Inspection | 3rd Party / Client / Manufacturer |
Customized for your line fluid & operating temperature.
Available in standard Cast Carbon Steel (WCB/WCC), Austenitic Stainless Steels (SS304/SS316), Duplex/Super Duplex, Hastelloy, Alloy 20, and specialized soft/metal seats.


