Double Seat Valve Mixproof Cavity Spray

The Inoxpa Double Seat Valve Mixproof Cavity Spray valve is a completely hygienic double sealing valve. This system allows for the simultaneous processes in the two bodies of the valve by providing the interface between the two fluids, preventing the possibility of product contamination. The leakage chamber and the leakage detector can be cleaned by “cavity spray”.  Manifolding is one of the applications of these valves in the food-processing industries, especially in the beverage and dairy industries

How it Works: When the Double Seat Valve Mixproof Cavity Spray valve is open the fluid can pass from one body to the other. Once the valve is closed, the double seat creates an annular chamber that isolates the bodies sealing them with double seals. It allows a CIP operation providing an interface between the two fluids, preventing the possibility of product contamination. Due to the leakage detector, any leak of a seat seal is detected by the appearance of liquid at the bottom of the valve. The leakage chamber and the leakage detection system are usually cleaned by CIP without interruption of the main process. The area between the seats is cleaned by the introduction of the CIP fluid from an external source. Nozzles situated near the base of the lower poppet direct jets of CIP fluid onto the leakage chamber wall. The fluid is released down the drain tube. The valve is balanced providing protection against overpressure and hydraulic shock up to 30bar.

  • Angular orientation 360ºC.
  • Available from DN 40 – 1½” to DN 100 – 4″.


  • Parts in contact with the product AISI 316L
  • Other stainless steel parts AISI 304
  • Gasket EPDM according to FDA 177.2600
  • Internal surface finish Ra ≤ 0,8 μm

Options on Valve:

  • Gaskets: NBR and FPM.
  • Connections: DIN, SMS, Clamp, RJT, etc.
  • Control box C-TOP.
  • Surface finish Ra ≤ 0,5 μm.
  • Mixed body sizes: combinations of bodies with different diameters.
  • Heating jacket.
  • DSO option designed for the CIP circuits.
  • Routing valve, with three bodies.

Technical specifications:

  • Max. operating pressure 10bar (for DN 4″ – DN 100 valves – max. 5bar)
  • Min. operating pressure Absolute vacuum
  • Working temperature -10 ºC to 120 ºC (140 ºC for short periods or sterilisation)
  • Compressed air pressure 5,5 bar – 7 bar
  • Air supply connections R1/8″ (BSP)

Design Features:

  • Compact design.
  • Valves with a normally closed pneumatic actuator.
  • Weld connections (mm or inches).
  • Forged spherical bodies.
  • Angular orientation 360ºC.
  • Balanced design.
  • Open lantern allows visual inspection of the sealing.
  • Easy disassembly by releasing the clamp.
  • Available from DN 40 – 1½” to DN 100 – 4″.

Contact our Valve Specialist Team:

Brendan Merrigan (External) – Mob: 087 2598124                           

Internal Team

Brian Barry – Tel: 021 461 7211

Darragh Rodgers- Tel: 021 461 7241

Miriam Adair- Tel: 021 461 7235

Ross O’Donovan – Tel: 021 461 7230 

Shauna O’Connor – Tel: 021 461 7237

Tim Quigley – Tel: 021 461 7209

Vicki McGrath – Tel: 021 461 7207

Tel: 021 461 7200