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Isolation Valves

Diaphragm Valves

A flexible diaphragm presses onto a weir or the body floor, isolating the fluid from the bonnet and stem. We supply diaphragm valves from Navi Mumbai to plants, contractors and projects across India.

Sectional drawing: diaphragm valves

Types we supply

  • Weir type
  • Straight-through (full bore)
  • Zero dead-leg (T-pattern)
  • Multi-port block
  • Tank bottom
  • Rubber or PTFE lined
  • Sanitary SS 316L
  • All-plastic

Key facts

Key facts for Diaphragm Valves
Typical size range8 mm to 350 mm
Pressure / ratingPN6 to PN16
MaterialsCast iron and ductile iron (lined), stainless steel, UPVC, CPVC, PP, PVDF; EPDM, PTFE or butyl diaphragms
StandardsBS EN 13397, ASME BPE (sanitary)
Typical applicationsAcids and alkalis, water treatment, chemical dosing, pharma and food

Ranges are typical for the product type, not a stock list. We confirm the exact size, rating, make and delivery on the quotation.

What to include in your enquiry

  • Valve type (for example: solid wedge gate, Y-pattern globe)
  • Size (mm or inch)
  • Pressure class or rating (PN or ASME Class)
  • Body material and grade (for example: WCB, CF8M, cast iron)
  • Trim, seat or lining material
  • End connection and operation (flanged, screwed; handwheel, gear, actuator)
  • Fluid, temperature and pressure
  • Quantity, approved makes and documents (test certificate, IBR, inspection)

Diaphragm Valves in our catalogue

Individual items with their listed specifications.

FAQ

Diaphragm Valves: common questions

Diaphragm Valves are typically available from 8 mm to 350 mm, rated PN6 to PN16. Exact sizes depend on the type, material and manufacturer; we confirm availability on the quotation.

Depending on type and manufacturer: BS EN 13397, ASME BPE (sanitary). Tell us the standard your specification calls for and we will quote against it.

We deal in diaphragm valves from leading manufacturers, matched to your specification and approved-makes list. Tell us the make you need, or ask us to recommend one for the duty.