These valves protect pumps when an application becomes airbound, and can be used to open or close an electric circuit in an alarm system.

Prevents liquid from entering a vacuum source, and functions as clean a water&sewage priming valve.

Valves offer freeze-protection for valves, pipelines, and piping equipment, and safety scald protection.

Valves are designed for hydronic heating, petroleum transfer, air & gas lines and irrigation systems.

These AWWA C-512 valves release air automatically from pipeline siphons. Sizes ½” thru 4” available.