The Dorot Dual Action Air Valve is designed for an efficient release of entrapped air from the pipeline, while the network is at normal working pressure. Due to the relatively large orifice, compared to other Automatic valves in the market, it can also release the air through initial filling of a small-diameter pipe, or admit air into it while it is drained.

The Float is made of naturally-buoyant material (specific weight lower than 1). The float activates a sealing stripe, that closes the outlet when the water will fill the valve body. On accumulation of air in the valve, loss of buoyancy causes the float to drop and to pull the strip, therefore opening the air outlet. The Hydraulic sealing of the orifice provides a drip-tight closure at a pressure of 2mwc (3psi).

• Operating pressure 0.1 bar / 1.5 psi to 16 bar / 230 psi
• Maximal water temp. for continuous operation: 60°C
• Maximal water temp. for intermittent operation: 80°C
• Inlet: 25mm MI BSP
• Structure materials:
• Cover: GRP (UV resistant)
• Base: GRP or Brass
• Internal components: corrosion resistant, reinforced plastic materials and synthetic rubber
• The valve allows the discharge of 40 m3/h / 24 CFM of air at pipe pressure of 6 bar / 90 psi