Heavy pattern cast brass construction with solid cast brass mounting flange with enclosed screw holes;Finishes available: satin nickel plated or polished chrome;Optional heavy patterned casted brass valve box in satin nickel or brass finish;Powder coated aluminum metal handle or operating key on loose key vandal proof sill faucets;Stainless steel seat washer screw and handle screw;Full circle ACME threads on stem assembly with standard 1/4” L size seat washer;AFG teflon with graphite packing;C-155, C-255, and C-355 have a P-002 vacuum breaker backflow check valve approved under ASSE 1011;C-165, C-265, and C-365 have a P-004 vacuum breaker backflow double check valve approved under ASSE 1052