1. When installing the pneumatic ball valve, the screw rod of the 57. The pneumatic ball valve shall be tightened evenly with a standard wrench. Do not use a force rod to increase the force, so as to avoid sliding wire, sliding edge and cracking of the union, and check regularly to prevent looseness, which may cause disc unseating or water seepage.
2. After the pneumatic ball valve of the valve is initially subjected to pressure, such as installation and pressure test, or before it is used again after being stopped for a long time, the bolts shall be pressurized and tightened from the beginning before it is put into operation. When the pneumatic ball valve is used close to the outlet of the water pump or frequently during startup and shutdown, in order to reduce the impact of excessive stretching and tightening of the pneumatic ball valve for a long time on the pipeline, limit devices should be added at both ends of the flange.
3. The flange connecting the pneumatic ball valve shall be the valve flange or the flange conforming to GB/T9115.1 (RF). During the installation of GJS (X) - A type JGD/KXT pneumatic ball valves of various types, the steel wire rope protruding from the reinforcement rings at both ends of the ball must be fully clamped into the flange groove to prevent the ball from pulling off the flange when the pneumatic ball valve is under pressure. When installing bolts, first tighten the symmetrical hexagon bolts or four bolts to ensure that all spheres and flanges are in place.
4. The use or storage of pneumatic ball valves shall prevent high temperature, ozone oil and acid-base environment. Sunshades shall be set up for pipes used outdoors or facing the sun against the wind to prevent sun exposure, rain and wind turbidity. The joint surface shall not be painted or surrounded with insulation materials. Check and replace valve products in time due to aging problems. When carrying out temporary welding between the metal socket and the flange, remember to cover the pneumatic ball valve at the welding position with a cover to prevent the ball from burning during welding.
5. In order to facilitate the radial error caused by the welding deformation of the short pipe, the pipe flanges at both ends shall be temporarily welded with round steel or other metal objects of corresponding strength before welding, so that the connection between the pneumatic ball valve and the flange forms a rigid body. After the short pipe is welded, the weldment shall be removed to make the pneumatic ball valve present a natural condition after the equipment is completed.