SED Chromatography Diaphragm valve

Compact stainless steel diaphragm chromatography valve


  • minimal contact makes the system faster
  • easy to clean
  • increased heat obsorption



ROMYNOX delivers SED chromatography diaphragm valves for high purity applications in the pharmaceutical, food, fine chemical and cosmetic industries. The SED chromatography diaphragm valves includes the same features and performance of a standard 2-way diaphragm valve of the KMA and Steripur series.


The SED chromatography diaphragm valves design can be assembled from one block of stainless steel. Due to the minimal contact it makes the system is faster. And cleaning is easier (CIP–SIP). With this design seal mass will be removed as much as possible. This will increase the heat absorption and the valve assembly beomes quickly sterile (SIP). There are valves with or without bypass.


  • Other materials
  • Client specific connections

Technical information

SizesDN 4 to DN 100
Max. pressure10 bar
Max. temp160°C
Connections– Orbital welding connection with standards; ISO, ASME , DIN and SMS
– Tri-clamp connection with standards; ASME BPE, DIN 32676 , DIN 11861
Material– Body, connections: 316L (1.4435)
– Membrane: EPDM, PTFE, silicone
Operatedmanual or actuator
Certificates3.1 en CE/PED