SL Series

Pressure Air Release Valves have a long body to keep liquid waste and solids away from working parts. These valves vent accumulations of air and gas while the system is in operation and under pressure.

SL Series Overview
Nominal Inside Diameter 2″-4″ Sizes Available
Construction Materials Body: Cast Iron (ASTM A126 Class B)
Trim/Float: Stainless Steel (ASTM A240)
Bolts/Nuts: Bolt: Steel (ASTM A307) Nut: Steel (ASTM A563)
Seat: PVC (ASTM 1784)
*Optional: Stainless Steel (ASTM A582)
Paint: Tnemec 141
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.