KMA 495 SED Diaphragm Valve

Pneumatically operated Plastic Actuator and Stainless steel bonnet

SED Diaphragm Valves

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, and gases.

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 highest demands of the pharmaceutical industry. Type 495 is availble in sizes DN 15 to DN 100 mm.


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

Technical Information

Sizes 3/4" to 4", DN 15 to DN 100 
Diaphragms: MA 25 - MA 100
Max. Pressure DN 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)
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: PP
- Membranes: EPDM, PTFE/EPDM
Finishes surface finish Ra value to max 0.25 μm
Operation Pneumatic Actuator
Control function Normally Closed, Normally Open or Double Acting
Actuator suitable for Two-Way bodies, Welded configuraties, T-bodies, Multiport bodies, Tank bottom bodies
Certificates 3.1, FDA, USP Class VI, CE / PED



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

pdfKMA 495 Datasheet - DN 15-100 mm
English - 395 kB - TD06 0018 Rev. M