The VR Valve allows air to enter a system when a negative pressure occurs, but prevents air from being released under postive conditions, except through an optional small orifice Air Release Valve.
|Nominal Inside Diameter||3″-36″ Sizes Available|
|Construction Materials||Body:||Ductile Iron (ASTM A536)|
|Disc:||Cast Stainless Steel (ASTM T316)|
|Bolts/Nuts:||Bolt: Steel (ASTM A307) Nut: Steel (ASTM A563)|
|Bushing:||Stainless Steel (ASTM T316)|
|Pressure Ratings||20-150 psi (stand.)
2-40 psi (Low)
151-300 psi (High)
Many Crispin Valves are available with special materials that may not be listed. Please contact the factory to inquire about custom orders.