Steripur 417 SED Diaphragm Valve

Pneumatically operated, Stainless steel DN 15 - 50

SED Diaphragm Valves

Romynox delivers Steripur diaphragm valve series SED for high purity applications in the pharmaceutical, food, fine chemical and cosmetic industries. Compact design, the outside diameter of the actuator is the same size as the bonnet flange. The Steripur is used where diaphragm valves entirely of stainless steel add value, such as clean rooms or aggressive (corrosive) environment.

Smooth surfaces, no explored nuts, no edges, and outside self-draining in all assemblies gives an optimised wash down design. The outside diameter of the actuator is the samen size as the bonnet flange. This gives advantages in multiport bodies and manifold valve assemblies.

The Steripur 417 DN 15 - 50 mm is the new design of the former Steripur 407 DN 15 - 50 mm.


  • High cycle stainless steel piston actuator
  • Compact design
  • Advantages in mulitport bodies and manifold valve assemblies
  • Control air connection in flow direction
  • CDSA sealing concept
  • Flexible diaphragm suspension
  • Encapsulated diaphragm
  • Clean and polished exterior design ideal for sterile wash downs

Technical Information

Sizes 3/4" to 21/2" - DN 15 to DN 50
Diaphragm: MA 25, MA 40, MA 50
Max. Pressure 10 bar (EPDM)
8 bar (PTFE/EPDM)
Temp. range -20 ºC to 140 ºC (EPDM)
-20 ºC to 150 ºC (PTFE/EPDM)
Type of connections Tri-clamp connection (ISO, ASME-BPE, DIN 32676), Flange, Butt Weld
Weld connections ISO 1127, ASME-BPE, DIN 11850, BS-4825, SMS 3008
Material - Body, connections: 316L (1.4435) Forged
- Bonnet: 316L (1.4435)
- Actuator: 316L (1.4435)
- Membranes: EPDM, PTFE/EPDM
Finishes Interior surfaces SF1
Operation Pneumatic Actuator
Control function Normally Closed, Normally Open or Double Acting
Actuators suitable for Two-Way bodies, welded configurations, T-bodies, Multiport bodies, Tank bottom bodies
Certificates (standard) 3.1 material, FDA, USP Class VI 121 ºC, {87}, {88}, EHEDG, PED, CE1935/2004, 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
  • Available with a wide range of control equipment and accessories, also for retrofitting
  • Control air connection 90° to flow direction
  • Autoclavable

pdfSteripur 407 Datasheet - DN 15-50 mm
English - 757 kB - TD06 0018 Rev. M