Vacuum breaker valve for water

Description :

The automatic air inlet valve (adductor valve) allows entrance and emissions of large quantities of air during pipe emptying or depressions in water pipelines.

These vacuum relief valves shall be normally closed by means of a spring and open automatically only when the system pressure become negative, falling to approximately 0,02 bar below atmospheric pressure.

The immediate admission of air into the system valve shall be assured by having 10% more inflow area than the inlet area of the valve, preventing then from vacuum and limiting the vacuum pressure to the one calculated for the system. The double-sealing design (metal-metal and resilient) provides a “drop-tight” shut-off.

The air inlet valve incorporates a stainless steel screen and steel hood to avoid the entry of foreign particles.

Diameters / Flange connexions : DN50-DN500 

Range : PN10, PN16 et PN25

Material :

  • Body : Ductile Iron EN GJS-500-7
  • Seat: Elastomer NBR/EPDM of high durability
  • Upper protection: Steel with screen in stainless steel.
  • Bolting: Internal in stainless steel A2 / External in galvanized steel
  • Coating: Non-toxic epoxy for drinkable water. Internal and external 200 microns thickness

Other material and special coating available upon request

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Vacuum breaker valve

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Vacuum Relief valve with flange – VS/oP

Typical VS/oP valves are vacuum valves / vacuum breaker with spring with flange connection. They are designed to be mounted on the storage tanks and silos, in particular with powdery materials and granules.
All moving parts are located outside.

VS/oP

Soupape casse-vide VS/oP

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Some other type of vacuum valves may reach your need, feel free to contact us.

Application : Protection against the vacuum for storage tanks and silos

Settings : standard from -1 mbar up to -50 mbar; alternative settings contact us

Materials :

  • Cast steel, Stainless steel
  • Gaskets : Perbunan, Viton, PTFE

Connection :

  • DN25 to DN250
  • Flanges ISO PN10, PN16, PN40, PN20 (ANSI 150 Lbs)

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Vacuum Relief valve with flange – type 5000

Vacuum Relief valve

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Application : Protection for vacuum (Vapors & gas)

Setting range maxi : -2,5 mbar to -750 mbar

Materials :

  • Aluminium, carbon steel, stainless steel
  • Gaskets : FPM / PTFE

Connection :

  • DN50 to DN300
  • Flanges ISO PN10, PN20 (150 Lbs)

Some other type of vacuum valves may reach your need, feel free to contact us.

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