Air release valves were designed for draining air at high flows at very low pressure, through filling-up of the pipeline.
The valves will also allow high flow rate of air into the pipe when it is draining, preventing the risk of excessive negative pressure that may cause collapse of the pipe.
The valves enable drain of small quantities of air- which tend to accumulate in the elevated locations during normal system operation, reducing the effective cross-section of the pipe, thus damage the hydraulic performance of the network.
All the valve components are included within a sturdy, tamper-proof body.
