T-valve Zero Dead Leg SED Diaphragm Valve

T-diaphragm valve ZDL with stainless steel or plastic actuator

Romynox delivers the T-valve with zero dead leg, of SED diaphragm valve for high purity applications in the pharmaceutical, food, fine chemical and cosmetic industries.

The zero dead leg diaphragm valves are usually used as a point of use in a WFI loop system. It can also be used as a drain point in other systems. The actuators for valves ZDL are part of the KMA or Steripur Series of SED. The SED T-diaphragm valves are also available with a casting body. This is an unique product of SED.


  • Customer’s specific design
  • Compact design and smaller envelope dimension is achievable with the Steripur Series actuators
  • Combination of many different nominal diameters
  • Optimized drainability
  • Minimized dead leg
  • Reduces surface contact, hold up volume and cross contamination of the product
  • Reduction of fittings, tubing and field welds in the system
  • Reduces qualification and validation documentation requirements
  • All end connections and materials are available according to the customer’s specification

Technical Information

Sizes 1" to 3", DN 25 - DN 80
Max. Pressure 10 bar
Temp. range -20 ºC to 140 ºC (EPDM)
-20 ºC to 150 ºC (PTFE/EPDM)
Type of connections Butt Weld
Weld connections ASME-BPE, DIN 11850, SMS 3008
Material - Body, connections: 316L (1.4435) Forged or casting
- Bonnet: 316L (1.4435)
- Membranes: EPDM, PTFE/EPDM
Finishes Interior surfaces SF1
Operation Manual or Pneumatic Actuator
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