SED – Tank Bottom Diaphragm valve Customized designs

Compact stainless steel tank bottom valves


  • The tank valve body is machined as standard from solid bar stock material 1.4435/316L
  • The standard design offers one valve port outlet
  • Minimized dead leg and internal sump
  • Suitable for mounting with SED Steripur and KMA series Actuated





The SED Tank Bottom Valve is designed for applications in the aseptic process industry offering a pocket-free interior surface, eliminating entrapment areas and minimizing flow resistance thus reducing the potential for process contamination.


The SED tank bottom valve incorporates the same features and performanceof a standard 2-way diaphragm valve from the KMA and Steripure series utilizing the same valve components for a flush mounted tank bottom valve or side mounted tank and sample valve. The SED tank bottom diaphragm valves with a casting body are unique and very affordable.

The datasheet (see below) shows some examples of standard and customized designs of tank diaphragm valves.

Technical information

Sizes1/2″ to 4″, DN 4 to DN 100
Material– Body, connections: 1.4435 (316L) Forged or casting
– Membranes: EPDM, PTFE/EPDM
Max. Pressure10 bar
Temp. range-20 ºC to 140 ºC (EPDM)
-20 ºC to 150 ºC (PTFE/EPDM)
Type of connectionsTri-clamp connection (ISO, ASME-BPE, DIN 32676), Flange, Butt Weld, Orbital Weld
Weld connectionsISO 1127, ASME-BPE, DIN 11850, BS-4825, SMS 3008
FinishesInterior surfaces SF1
OperationManual 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


  • Options for sampling, sterilization, and multi-outlet configurations.
  • Other alloy options available as specified
  • Optional manual operation via an extended crankshaft stem