... 4.Size:1/2",3/4",1",1 1/4",1 1/2",2" Ball Valve:With O-rings ... the torque required for the opening/closing. Floating ball allows smooth and quick opening/closing and ensures easy ... on the threads for steady connection and good sealing.3)Ball body——Has chrome-plated surface and good sealing.4 ... O-rings——Sealing Function.7)Gaskets——Reduce Function.8)Ball——Chrome-plated surface and good seating-anti-loose ...