SED – KMA 495 Diaphragm valve

Pneumatically operated Plastic Actuator and Stainless steel bonnet


  • Efficient plastic piston actuator with stainless steel distance piece
  • Control air connection 90° to flow direction
  • CDSA sealing concept
  • Flexible diaphragm suspension
  • Encapsulated diaphragm


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 from SED for high purity applications in the pharmaceutical, food, fine chemical and cosmetic industries.


The valve is predestined for applications with high purity, dirty and aggressive fluids, gases the KMA-series from SED has a number of characteristic properties, such as in-line or on 90 gr air connection. suitable for smooth surfaces, no explored nuts, no edges, and outside self-draining in all assembly, positions describe the optimised wash down design. The KMA series meets the high demands of the pharmaceutical industry. Type 495 is availble in sizes DN 15 to DN 100.


  • Investment cast
  • Other materials
  • Client specific connections
  • Available with a wide range of control equipment and accessories, also for retrofitting

Technical information

Max. PressureDN 15-50
10 bar (EPDM)
8 bar (PTFE/EPDM)
DN 65-80
7 bar (EPDM)
6 bar (PTFE/EPDM)
DN 100
6 bar (EPDM)
5 bar (PTFE/EPDM)
Temp. range-20 ºC to 140 ºC (EPDM)
-20 ºC to 150 ºC (PTFE/EPDM)
Material– Body, connections: 316L (1.4435) Forged
– Bonnet: 316L (1.4435)
– Actuator: Polyarylamide
– Diaphragms: EPDM, PTFE/EPDM
surface treatmentsurface treatment Ra value till max 0.25 μm
controlPneumatic Actuator
acuator suitable forTwo-Way bodies, Welded configuraties, T-bodies, Multiport bodies, Tank bottom bodies
Control functionNormally Closed, Normally Open or Double Acting
Certificates3.1, FDA, USP Class VI, CE / PED