1.Ball valve is a control component in pipeline system that can quickly cut off the flow. The valve must be fully open or fully closed when use, it cannot be used for flow control.

2.Otore ball valve have internal and external thread, compression and hot-melt connections, valve body and bonnet are made through constant temperature hot forging and annealing process, stem are also through annealingprocess which greatly improve the mechanical behavior of the valve and its safety factor. Valves are tested strictly in accordance with GB / T 13927-1992 "GENERAL VALVE PRESSURE TEST" standard, all valve are tested qualified before delivery.

3.The installation and commissioning of the valve must be carried out by qualified technician, the two sides of the pipeline different degree of deviation cannot be too large, otherwise it will produce excessive stress when installing and result in damage to the valve. To install valve, it should tighten the near-end of hexagonal or octagonal wrenching flats rather than far-end of the valve so as to avoid causing valve deformation

4.Valve's thread accuracy and effective length strictly implement ISO 228 and related standards, it must use appropriate force to tighten valve by pipe wrench and screw into the effective length of the thread when installing.Overexert will resultin product deformation, sealing surface damage and leakage.

5.To ensure the normal use of the valve, it is necessary to install a filter at the entrance of pipeline. And it should design the appropriate preventive measures in order to avoid the pipeline pressure or temperature fluctuating frequently which will reduce the service life of the valve.

6.Ball valve handle design is based on the valve's environment and the corresponding torque;do not use the tool with increased moment arm to replace in order to avoid excessive torque and damaging the valve. In the course of the use, do not close the valve too fast, otherwise it will produce instantaneous pressure and cause the water hammer effect.

7.The material of valve's stem seal packing is PTFE. You can tighten the gland nut to compensate the packing if there is corrosion leakage. the valve's to remove the fluid pressure when replacing the packing.