best Brass Ball Valve Application: water, ethylene glycol 50%, compressed air Body and ball material: Brass Ball and stem seal material: PTFE Nominal pressure 16 bar (PN16) Maximum working temperature: 120掳C Nickel free - no nickel plating on the inner surface Cw617n-4ms Brass - reduced lead and nickel content Brass Valve Body: High-density forging, no blister, no air holes, no leakages. Made by special high precision CNC machines. Brass Bonnet: High-density forging, no blister, no air holes, no leakages. Made by special high precision CNC machines. Valve Ball: Smooth and wear resisting, with good sealing performance. Brass Valve Stem: Made of hot rolled brass, high tensile strength, good toughness, long-term use without deformation, fracture. The thread, color of handle, materials, etc. can be customized.best Brass Ball Valve website:http://www.winsoem.com/brass-valve/brass-ball-valve/