Valve maintenance requirements

1. The valve should be stored in a dry and ventilated room, and both ends of the passage must be blocked.
2. Valves stored for a long time should be inspected regularly, dirt should be removed, and anti-rust oil should be applied to the processing surface.
3. After installation, regular inspections should be carried out. The main inspection items are:
(1) Wear of sealing surface.
(2) Wear of the trapezoidal thread of the valve stem and valve stem nut.
(3) Whether the packing is out of date and ineffective. If it is damaged, it should be replaced in time.
(4) After the valve is repaired and assembled, a sealing performance test should be carried out.