Air release valves are automatic pipeline devices that vent trapped air from water distribution systems to improve flow efficiency, prevent air lock and reduce pipe damage. We supply single orifice and double orifice air release valves sourced from vetted factories, with ductile iron and stainless steel bodies, threaded and flanged connections. Suitable for clean water pipelines and pressurized water supply networks. Commonly installed at high points of water mains, sewage systems and HVAC piping. All products are tested for reliable automatic air venting performance.