Steripur 397 - SED Diaphragm Valve

Manual operated valve with stainless steel bonnet and hand wheel

SED Diaphragm Valves

Steripur 397 SED Diaphragm valve for high purity applications in the pharmaceutical, food, fine chemical and cosmetic industries.

These valves are predestinated for applications with high purity, dirty or aggressive fluids and gases. Its smooth surface, without nuts or edges, combined with a self-draining exterior in all assembly positions, gives it an optimised design to be cleaned.
The Steripure is mostly used in conditions where diaphragm valves entirely made of stainless steel offer added value, such as cleanrooms or aggressive (corrosive) environments.


  • Stainless steel bonnet and hand wheel
  • Manually actuated with rising hand wheel
  • Sealed bonnet with optical indicator
  • Adjustable internal travel stop
  • CDSA sealing concept
  • Flexible diaphragm suspension
  • Encapsulated diaphragm
  • Autoclavable

Technical information

Sizes Tube: IMP 3/8” – 3/4”; DN 8 – 20
Diaphragm: MA 10
Max. pressure 10 bar
Temp. range
  • -20 ºC to 140 ºC (EPDM)
  • -20 ºC to 150 ºC (PTFE/EPDM)
  • Tri-Clamp (ISO, ASME-BPE, DIN 32676)
  • Flange
  • Butt weld
Weld connections ISO 1127, ASME-BPE, DIN 11850, BS-4825, SMS 3008
  • Body & connections: 316L (1.4435) forged
  • Bonnet: 316L (1.4435)
  • Hand wheel: 316L (1.4435)
  • Diaphragms: EPDM, PTFE/EPDM
Finishing Interior surfaces SF1
Bonnets suitable for two-way bodies, welded configurations, T-bodies, multiport bodies, tank bottom bodies
Operation Manual
Certificates 3.1 material, FDA, USP Class IV 121 C {87}, {88}, EHEDG, PED, CE 1935/2004, TSE/BSE
Certificates (optional) 2.2 surface finish, ATEX 2GD


  • Investment cast
  • Other materials
  • Surface finish Ra value to max. 0.25 µm
  • Client specific connections
  • Locking device

pdfSteripur 397 Datasheet - DN 8-20 mm
English - 605 kB - TD06 0018 Rev. M