Tandem SED Diaphragm Valve

Compact welded configuration of stainless steel diaphragm valves with stainless steel or plastic actuator

SED Diaphragm Valves - Specials

Romynox supplies SED tandem diaphragm valve configurations for high purity applications in the pharmaceutical, food, fine chemical and cosmetic industries. These welded diaphragm valve configurations are specifically designed for processes in aseptic manufacturing plants, reducing dead leg in accordance with cGMP.

Various configurations are possible; from simple tandem assemblies, where two valves are welded together, to very complex configurations of various diaphragm valves of different sizes, brought together in a cluster. Within SED there is strict quality control for every welded joint in the configuration. All accessible welds are polished to internal surface specifications. Then the configuration of the diaphragm valves is visually inspected and tested for maximum pressure.

During the installation of welded diaphragm valve configurations, it is important to follow proper guidelines for the drainability of the diaphragm valve assemblies.

 Technical Information 

Size DN 4 - DN 100
Material Body : 316L , (casting and forged)
Diaphragm: EPDM , PTFE , silicone
Actuator: stainless steel - plastic
Max. operating pressure 10 bar
Max Temperature 150 °C
Connections: - Orbital welding connection with standards; ISO, ASME , DIN and SMS
- Tri -clamp connection with standards; ASME BPE ,DIN 32676, DIN 11861
Finish: - surface finish Ra value to max 0.25 μm
- electro- polished or only mechanically polished
- or ASME BPE 2012 Table SF5
Operation manual and actuator (pneumatic)
Certificates (standard) 3.1, FDA , USP Class VI , CE / PED
Certificates (optional) surface finish certificate, ATEX


  • Handle: control valve or open-close signaling
  • Materials: 904, Hastelloy
  • Special versions: Customization is always possible

pdfDatasheet SED Diaphragm Valves Tandem
English - 739 kB - TD06 0018 rev. L