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Air Valves

This composite material single orifice (25mm) air relief valve is suitable for use with potable and filtered water, to a maximum working pressure of 16 bar, and between temperatures of -10ºC to +70ºC. Insulation is essential for temperatures of 0ºC and below.

Features & Benefits
  • Air release capability 10 times greater than conventional units
  • 300gms. weight
  • Reinforced nylon body
  • 1” BSP male thread connection
  • Rolling seal EDPM rubber
  • WRAS approved
25mm Single Orifice Composite Air Valve c/w Isolating DZR Brass Ball Valve 082025SOAVIB

This composite material double orifice air relief valve is suitable for use with potable and filtered water, to a maximum working pressure of 16 bar, and between temperatures of -10ºC to +70ºC. Insulation is essential for temperatures of 0ºC and below.

Features & Benefits
  • Large orifice will discharge air to over 1 bar pipeline pressure
  • Small orifice 10 times more efficient than conventional units
  • Suitable for pipeline up to and including 350mm
  • Reinforced nylon body
  • Rolling seal EDPM reinforced nylon + STST
  • WRAS approved
80mm Double Orifice Combination Air Relief Valve (Composite) c/w Isolating DZR Brass Ball Valve 082080DOAVIB

Air relief valves are manufactured in various styles to suit their application requirements. This may be on pressure pipelines that transport potable or filtered water, sewage or raw water, and even sludge.

Air valves are normally incorporated into the system with the addition of an isolating valve, mounting flanges may also be used (size and drilling needs to be specified).

This double orifice air valve is suitable for use with potable and filtered water, to a maximum temperature of +70°C.

  • Release large volumes of air from pipelines up to 0.9bar
  • Discharge from the small orifice is 10 times greater than from conventional units
  • Lightweight design
  • Corrosion resistant construction
  • PN25 & PN40 versions
  • WRAS approved

Available from DN50 - 200mm

This cast aluminium double orifice air relief valve is suitable for use with sewage, raw water, brine and sludge, to a maximum working pressure of 16 Bar, and between temperatures of -10ºC to +70ºC. Insulation is essential for temperatures of 0ºC and below.

Features & Benefits
  • Large orifice will discharge air to over 1 Bar. Pipeline pressure
  • Small orifice 10 times more efficient than conventional units
  • Rilsan(R) coated aluminium body
  • Only 17kg in weight
  • Drainage and flushing bosses
  • Reduction in hammer and surge in systems
  • Highly corrosion resistant
  • Optional isolating gate valve
Double Orifice Combination Air Relief Valve 082080SEWAV