SED – KMA 190 complete Diaphragm valve

Pneumatically operated with Stainless Steel Bonnet and Plastic Actuator


  • Efficient plastic piston actuator with stainless steel distance piece
  • Direction of control air connection is mountable in 90° rotations
  • CDSA sealing concept
  • Flexible diaphragm suspension
  • Optical indicator


Suitable for

Multiport bodies, T-bodies, Tank bottom bodies, Two-way bodies, Welded configurations


Butt Weld, Flange, Tri-Clamp


SF1, SF4

Man. process



316L (1.4435), Polyarylamide (Ixef)



Weld connection

ASME-BPE, BS-4825, DIN 11850, ISO 1127, SMS 3008




Romynox delivers KMA diaphragm valve series SED for high purity applications and meets the highest standards for the pharmaceutical, food, fine chemical and cosmetic industries. The KMA series from SED has a number of characteristic features, such as the air connection that can be positioned in-line or at 90° relative to the process flow.


The KMA 190 is pneumatically operated and is suitable for sizes DN 4 to DN 15.

The valve is designed for applications with high purity, dirty and aggressive fluids, and gases. Smooth surfaces, no explored nuts, no edges, and outside self-draining in all assembly, positions describe the optimised wash down design.


  • Investment cast 316L/1.4435 or other Alloys
  • Surface finish Ra value to max 0.25 m
  • Other materials
  • Client specific connections
  • Available with wide range of control equipment and accessories: stroke limiter, limit switch and position indicater
  • ATEX version

Technical information

Max. Pressure8 bar (EPDM)
7 bar (PTFE/EPDM)
Temp. range-20 ºC to 140 ºC (EPDM)
-20 ºC to 150 ºC (PTFE/EPDM)
  • Tri-clamp connection (ISO, ASME-BPE, DIN 32676)
  • Flens
  • Butt Weld
Welding connectionsISO 1127, ASME-BPE, DIN 11850, BS-4825, SMS 3008
Material– Body, connections: 316L (1.4435) Forged
– Bonnet: 316L (1.4435)
– Actuator: Polyarylamide (Ixef)
– Membranes: EPDM, PTFE/EPDM
actuator suitable forTwo-way bodies, welded connecties, T-bodies, Multiport bodies, Tank bottom bodies
surface treatmentInternal surface finish SF1
controlsPneumatische Actuator
Control functionNormally Closed, Normally Open or Double Acting
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