These Original Air and Vacuum Valves are designed to exhaust large quantities of air when filling pipelines, and to allow air to re-enter pipelines when draining to prevent collapse due to vacuum formation.
|Nominal Inside Diameter||2″-24″ Sizes Available|
|Construction Materials||Body:||Ductile Iron (ASTM A126 Class B)|
|Bolts/Nuts:||Bolt: Steel (ASTM A307) Nut: Steel (ASTM A563)|
|Pressure Ratings||20-150 psi (stand.)
2-40 psi (Opt.)
151-300 psi (Opt.)
Many Crispin Valves are available with special materials that may not be listed. Please contact the factory to inquire about custom orders.