Sanitary Tank Bottom Valve

Sanitary Tank Bottom Valve is a drain valve which used on process equipments. It is the ideal sanitary valves for the gas and liquid service or with slurries, polymers, and high viscosity fluids, which may solidify at room temperature. Wellgreen provide tank bottom valve to aseptic process industry with good quality and service, it is a good choice for draining tank and process vessel etc.



  • Suitable for inert and corrosive liquid and gaseous medium.
  • The body of tank bottom valve is integrate, not splitted..
  • Double layer diaphragm design (EPDM+PTFE).
  • High purity hygienic design, conform to 3A standard.
  • High quality diaphragms divide hermetically critical fluids from the actuator.
  • Smooth, pore free surface allows for easy cleaning.
  • CIP/SIP cleaning and sterilizing capabilities of our tank bottom valve.


Stainless Steel 304,316L or en.1.4301, 1.4404 forged.



  •     Material of stainless steel 316L and 1.4404 is from reputed mill to guarantee the chemical composition and mechanical properties. Material certificate will be submitted follow to orders.
  •     Forged valve body and disc to control the leakage and visual.
  •     Superior facilities and good experiences for fabrication.
  •     In ability to improve and develop new design.
  •     Fast delivery is possible to meet your needs well in time.
  •     Low cost from bulk production will reduce your budget and improve your business.
  •     Small quantity available.


    Quality & Inspection:

  •      PMI test to verify material grade
  •      Dimension controlling during fabricating and finished
  •      Visual and surface 100% examination before shipment
  •      Packed in carton box firstly, then in wooden case
  •      Third party inspection available.



    Food, Brewery, Beverage, Dairy, Pharmaceutical, Biopharma etc.


Technical Specifications & Options of Sanitary Tank Bottom Valve

General Specifications of Sanitary Tank Bottom Valve

Working Pressure

Max. Working Pressure

10 bar

Working Temperature

Continuous Working


-10°C ~ +121°C(PTFE+EPDM)

Sterilization Temperature

150°C (Max 20min)

Surface Finish

Internal Surface Finish


External Surface Finish

Semi-light or sand blast


Connection Standards


Connection Methods

Welding, Clamp


Metal Material

Product Wetted

316L (1.4404) forged or casted

Other Steel Parts

304 (1.4301)

EN 10204 3.1B certificate is available on request.

Seal Material




FPM, Silicone, EPDM

FPM, Silicone, EPDM

Manual Handles & Pneumatic Actuator

Manual Handle

Hand operated

Plastic handle wheel

Pneumatic Actuator

Pneumatic Actuator


Normally Closed (NC)


Air/Air (A/A) / Normally Open (NO)

Air Supply

Dry & Filtered Compressed Air

*For more information of Sanitary Tank Bottom Valve, please contact us for details.

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