1, Integral body structure welding, there will be no external leakage. 2, The valve seat is composed of PTFE sealing ring and spring, which can adapt to the change of pressure and temperature. It will not produce any leakage in the use range. 3, the stem of the anti-leakage structure, the bottom of the stem has a PTFE self-sealing gasket and an O-ring, there are two O-rings, two PTFE gasket composition to ensure no leakage. 4, the valve body material and pipe the same material, there will be no stress, it will not be due to earthquakes and vehicles through the ground when the extrusion deformation. 5, light body and easy insulation. 6, direct buried ball valve can be buried directly in the ground, do not build tall valve well, just set a small shallow ground on the ground, saving construction costs and construction time. 7, according to the construction of the pipeline and design requirements to adjust the length of the valve body and stem height. 8, the processing precision of the ball is very precise and light operation, no adverse interference. 9, there are two ways of welding and flange connection. 10, mode of operation: handle, gear (vertical / horizontal)? 11, the valve under normal operation, the warranty period of 20 years.
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