CSA was the first company to invent a single chamber full bore combination air valve with solid pp floats, it was a long time ago and since then it has been constantly improving its products developing many lines like RFP rapid filling prevention and AS anti-shock versions. The exclusive aerodynamic body ensures the absence of turbulence present in other shapes more cylindrical, the patented air release system AISI 316 allows for the absence of leakage even with low pressure and vibrations.
Contrary to other similar alternatives on the market the first two floats are joined together to improve performances and avoid the drowning effect.
CSA air valves are recognized worldwide holding the major approvals for potable water.
It is estimated that 40% of pipe bursts happen during pipe filling, and the air valves are designed to avoid this kind of problem.