KMD 385 SED Diaphragm Valve

Pneumatically operated, Plastic piston actuator direct assembled onto the valve body

SED Diaphragm Valves

Romynox delivers the KMD series of SED Flow Control for high purity applications in the pharmaceutical, food, fine chemical and cosmetic industries. Specialty of the KMD- series of SED is the plastic actuator. 


  • Plastic diaphragm actuator, direct aseembled to the valve body
  • Actuator high restistance to heat transfer
  • Control air connection 90° to flow direction
  • CDSA sealing concept
  • Flexible diaphragm suspension
  • Encapsulated diaphragm

Technical Information

Sizes IMP 3/4" to 3", DN 15 to DN 80
Diaphragm: MA 25 - MA 80
Max. Pressure DN 15-50
10 bar (EPDM)
8 bar (PTFE/EPDM)
DN 65-80
7 bar (EPDM)
6 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
- Actuator: PP
- Membranes: EPDM, PTFE/EPDM
Surface finishes 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 configurations
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

pdfKMD 385 Datasheet - DN 15-80 mm
English - 387 kB - TD06 0018 Rev. M