Anti-Vacuum Valves

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Prevents a vacuum forming in hot water applications

Reliance Valves Automatic Anti-Vacuum Valves are a compact range for hot water heaters. The valve prevent a vacuum forming in installations where there is the potential for the draw off rate to exceed the rate of flow to the inlet, which an occur in properties with multiple outlets below the base of the hot water heater.

The valves contain a check cartridge which, under normal conditions, is held closed by the system pressure, but when a vacuum condition arises the suction will cause the check cartridge to open and air to flow through, equalising the pressure within the hot water heater.

Features and benefits

  • Automatic protection against a vacuum forming in hot water installation
  • Solid brass body for long life
  • Easy access to the internal components from the top of the valve
  • Quick and simple to service
  • Suitable for hot water use only

Accreditations

WRAS approved product
SKUDescriptionModelOutlet Size mmBSP ″Accreditations
ADMT5030011⁄2″ MBSP Anti-Vacuum ValveHot Water Anti-Vacuum Valve1⁄2
WRAS
ADMT50300415mm Anti-Vacuum ValveHot Water Anti-Vacuum Valve with Pop Up Indicator15
WRAS
ADMT50300522mm Anti-Vacuum ValveHot Water Anti-Vacuum Valve with Pop Up Indicator22
WRAS
ADMT5030103⁄4″ MBSP Anti-Vacuum ValveHot Water Anti-Vacuum Valve3⁄4
WRAS