No metallic parts, corrosion resistant Standard 1/4lb spring Full flow design Iron Pipe sized Designed for both horizontal and vertical usage Pressure rated 125 PSI @ 72ºF NONE OF THESE PRODUCTS IS DESIGNED FOR USE WITH COMPRESSED AIR OR GASES. Regular price: $19.95Sale price: $15.95Size: 1.5"2"(+6.00) Home: Backwater Valves :Ball Valves:Butterfly Valves: Check Valves:Electric Valves:Gate Valves:Jandy Valves: Pneumatic Valves:Swimming Pool Valves:Three Way Valves: Valve Accessories: