Valve maintenance
1. The valve should always be kept clean during use, and the transmission thread must be regularly lubricated. When a fault is found, it should be stopped immediately to find out the cause and clear the fault.
2. The bolts of the packing gland should be evenly tightened, and should not be pressed into a crooked state, so as to avoid bruising, hindering the movement of the valve stem or causing leakage.
3. When installing, the valve connection method can be directly installed on the pipeline. Under normal circumstances, it can be installed in any position for management, but it needs easy-to-operate maintenance. Note that the medium flow direction of the stop valve should be upward from the vertical valve flap, and the lift check valve can only be installed horizontally.
4. When using ball valves, globe valves, and gate valves, they should only be fully open or fully closed, and are not allowed for flow adjustment, so as to avoid erosion of the sealing surface and accelerated wear. There is an inverted sealing device in the gate valve and the upper threaded stop valve, and the handwheel is turned to the uppermost position and tightened to prevent the medium from leaking from the packing.
5. Use handwheels when opening and closing ball valves, globe valves, and gate valves. Do not use levers or other tools to avoid damage to the valves. Turn the handwheel clockwise to close, otherwise it is open.
6. Before installation, you must carefully check the pressure marked on this valve, whether the diameter meets the requirements of use, eliminate the defects caused by the transportation process, and eliminate the dirt on the valve parts.
7. Valves stored for a long time should be checked regularly. The exposed processing surface should be kept clean and clear of dirt. The ball valve should be blocked at both ends and in an open state during storage. Gate valves, stop valves, and check valves should be at both ends of the passage. Blocked and closed, stored neatly in a ventilated and dry place indoors. Stacking or open storage is strictly prohibited.