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Daily stainless steel valve maintenance
Daily stainless steel valve maintenance
1, the valve should be stored in a dry and ventilated room, both ends of the channel must be blocked.
2. Valves stored for a long period of time should be inspected periodically to remove dirt and apply anti-rust oil on the processed surface.
3. After installation, inspections should be carried out regularly to check the main items:
(1) Seal surface wear.
(2) The trapezoidal thread wear of the stem and stem nut.
(3) Whether the filler is out of date, if it is damaged, replace it in time.
(4) The sealing performance test shall be conducted after the valve is repaired and assembled.
Valves in operation, all kinds of valves should be complete and intact. The bolts on the flanges and brackets are indispensable and the threads should be intact and loose. The tightening nut on the hand wheel should be tightened in time if loosening is found, so as not to wear the joint or lose the hand wheel and nameplate. If the handwheel is lost, it cannot be replaced with a live spanner. Packing glands must not be skewed or pretensioned. For valves in environments that are easily contaminated with rain, snow, dust, sand, and other contaminants, a protective cover should be installed on the stem. The scale on the valve should remain complete, accurate and clear. Valve seals, caps, pneumatic accessories, etc. should be complete and complete. The insulation jacket should be free from dents and cracks.
It is not allowed to tap, stand or carry heavy objects on the valves in operation; in particular, non-metallic valves and cast iron valves must be prohibited.
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