Diaphragm valve generally refers to a valve having a diaphragm of rubber or other flexible material that opens or closes the fluid passage. Diaphragm valves are used on shut-off and throttling service for liquids, slurries and vacuum/gas. The seal is achieved by a flexible membrane, usually elastomer, and possibly reinforced with a metal part. The membrane is tensed by the effect of a stem/compressor with lineal movement until contact is made against the seal of the body. The operating parts of the diaphragm valve are isolated from the flow. This makes this valve suitable for viscous flows and also hazardous, abrasive and corrosive flows as its sealing system avoids any contamination towards or from the environment. Diaphragm valves are available in a wide variety of metals, solid plastics, plastic, rubber and glass linings. They are well suited to the handling of multiple chemical applications both clear fluids as well as slurries. The diaphragm valve has an extended use for applications at low pressures and slurry fluid where most other kinds of valves corrode or become obstructed.

Straight type diaphragm valve
•The fluid passage is straight, which minimizes pressure drop and/or fluid accumulation.
•Applicable to viscose fluid, cellulose fluid, slurry, sledge and other fluids containing suspended solids.
•Used for: Water purifying plants, terminal treatment plant, etc.

1.Minimal Resistance to Flow
2.Consistent Leak-Tightness, even with solids in line
3.Assured purity of Line Fluid, due to the isolation of Valve Mechanism
4.Easy Maintenance
5.Glandless Construction
6.Rising Handwheel
7.Field Serviceable Bonnet Assembly
8.Low Flow Resistance
9.Fluid is isolated from operating mechanism
10.No Stuffing Box
11.Leakage Free
12.Availability of Wide Range of Elastomer Diaphragms
13.Easy to Automate
14.Variable flow direction and installation position
15.Epoxy painting
16.It is a quick opening valve.

1.Design & Manufacture standard as to: MSS-SP-88
2.Face to Face dimension standard as to: MFR-STD
3.Flange dimension conforms as to: ASME B16.5  RF / FF
4.Testing And Inspection as to: API 598
5.Anti Corrosion as per NACE MR-0175 requirement