Rain Bird Quick Coupling Valves offer industrial-strength brass valves for convenient water access in potable and non-potable systems. They are constructed from rugged, red brass for long life and reliable performance and feature a stainless steel corrosion resistant spring. -Standard locking cover on models 33-DNP, 44-NP, 44-NP ACME and 5-NP (use 2049 key to unlock). Optional locking cover on models 33-DLRC, 44-LRC, and 5-LRC. Metal cover on model 7 only; -One-piece body design (models 3-RC, 5-RC, and 7); -Two-piece body design for easy servicing (models 33-DRC, 44-LRC, 44-RC, 33-DNP, 44-NP, and 44-NP ACME); -Strong corrosion-resistant stainless steel spring prevents leakage; -Thermoplastic cover for durability; -33-DNP, 44-NP, 44-NP ACME, and 5-NP covers marked with "Do Not Drink!" warnings in English and Spanish; -Three-year trade warranty; Rain Bird Quick-Coupling Valves