KMA 190 SED Diaphragm valves

Pneumatically operated with Plastic Actuator and Stainless Steel Bonnet

SED Diaphragm Valves

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 190 is pneumatically operated and is used for sizes DN 4 to DN 15. 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. 


  • 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

Technical information

Sizes Tube:  IMP 1/4" to 1/2", DN 4 to 15
Diaphragm: MA 8
Max. Pressure 8 bar (EPDM)
7 bar (PTFE/EPDM)
Temp. range -20 ºC to 140 ºC (EPDM)
-20 ºC to 150 ºC (PTFE/EPDM)
Weight 0,5 kg
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: Polyarylamide (Ixef)
- Membranes: EPDM, PTFE/EPDM
Finishes Interior surfaces SF1
Operation Pneumatic Actuator
Actuator suitable for Two-way bodies, welded configurations, T-bodies, Multiport bodies, Tank bottom bodies
Control function Normally 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



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



pdfKMA 190 Datasheet - DN 4-15 mm
English - 422 kB - TD06 0018 Rev. M