Diaphragm valves

Diaphragm valves

Description

Diaphragm valve do not incorporate any stuffing box and are leaktight on all liquids, slurries, granular materials, powders, pastes, gases, acids etc.
Diaphragm (internal membrane) is supported during opening and closing, and is easily replaceable without any special tools.
The wide range of available elastomer materials enable an appropriate selection for each application and is a guarantee
of perfect resistance to corrosion and abrasion.

Sanitary type valves are recommended for ultimate sterility in pharmaceuticals and biotechnology industries. Using perfectly
contoured self-draining stainless steel bodies and PTFE faced diaphragms, resulting in valves totally free of bacteria traps

 

Download catalouge: GO catalog Diaphragm Valves.pdf

 

PRODUCT FEATURES

  • Weir type, conveyed flow way – Full bore type, straight through way
  • Sanitary type
  • Flanged valves sized from 1/2” through 14”
  • Sanitary type (buttweld, screwed, tri-clamp, socket) sized from 1/2” through 4”
  • Manual, pneumatic and electric operators

PERFORMANCE FEATURES

  • Long diaphragm life: no metallic inserts to strain the elastomers
  • Low pressure loss
  • Diaphragm supported during opening and closing: hence the possi­bility of under vacuum operation
  • Quick and easy replacement of diaphragm
  • Epoxy painted, valve bodies protected with an anti-acid varnish

BODY VALVE MATERIALS

  • cast iron gg20 or gg 25 (uni iso 185/uni 5007) as per astma126
  • ductil or spheroidal cast iron gs400/12 (uni iso 1083/uni4544) as per astm a536
  • cast steel wcb (a216m-93) as per astm a216 wcb
  • carbon steel lcb as per astm a352
  • stainless steel 316 (a743m-98) as per cf8m
  • pure aluminium – PVDF, PPH

BODY VALVE LINING MATERIALS

  • Soft rubber
  • Butyl rubber
  • Hard rubber (ebonite)
  • ECTFE/HALAR
  • PFA
  • ETFE
  • Galvanized (laid in an hot zinc bath)

BODY EXTERNAL & INTERNAL SURFACE

(for sanitary type only)

  • Satin or Vacuublast finished for external
  • Vacuublast, Satin, Mirror or Supermirror finished for internal

MATERIAL DIAPHRAGM

  • Nitrile
  • Hypalon
  • Silicone
  • Neoprene/Silicon (mixed)
  • PTFE faced
  • Natural rubber
  • White natural rubber
  • Neoprene
  • EPDM
  • Viton
  • Butyl

DESIGN/DIMENSIONS APPLICABLE STANDARD

  • BS 5156
  • DIN 3202 F1

END CONNECTIONS APPLICABLE STANDARD

  • ANSI/ASME B16.5 Flanged Valves
  • ANSI/ASME B16.1 Flanged Fittings
  • ANSI/ASME B1.20.1 (NPT)Pipe Threads
  • ANSI/ASME B16.34 Steel Valves
  • ANSI/ASME B16.11 Socketweld Fittings
  • MSS SP-88 Diaphragm Valves
  • ANSI/ASME B16.25 Buttweld Ends

CERTIFICATES AVAILABLE

  • EN 10204 3.1.B – EN 10204 2.2

INSPECTION TESTS AVAILABLE BY

  • SGS GLOBAL TRADE SOLUTIONS
  • ITS INTERTEK TESTING SERVICES
  • BV BUREAU VERITAS