Refrigerant Gas Brass Body Cylinder Valve Tamper proof gland nut cannot be removed Non-refillable outlet feature, protects cylinder from contamination (Removable and fixed versions available) Hose barb supplied for easy assembling of the Dip Tube Various soft seat Material components assures positive leak tight shut-off Inlet threads available with ever seal insuring leak tight cylinder connection and reduced friction during installation Working Temperature: -20~65 degree Thread: 1/4 SAE Pressure:3.2bar