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Daily maintenance and upkeep of electric valves
1. Electric valves should be stored indoors in a dry and ventilated area, and both ends of the passage must be blocked.
2. Electric valves stored for a long time should be regularly inspected, cleaned of dirt, and coated with rust proof oil on the processing surface.
3. After installation, regular inspections should be carried out, with the main inspection items being:
(1) Wear condition of sealing surface.
(2) Wear condition of trapezoidal thread on valve stem and valve stem nut.
(3) Whether the packing is outdated or ineffective, and if it is damaged, it should be replaced in a timely manner.
(4) After the maintenance and assembly of electric valves, a sealing performance test should be conducted.
Electric valves in operation should have complete and intact valve components. The flange threads and bolts on the bracket are indispensable, and the threads should be intact without any looseness. If the fastening nut on the handwheel is found to be loose, it should be tightened in a timely manner to avoid wear on the connection or loss of hands
Wheel and nameplate. If the handwheel is lost, it is not allowed to replace it with an adjustable wrench and should be promptly equipped. The packing gland is not allowed to be skewed or have no pre tightening gap. For electric valves that are easily contaminated by rain, snow, dust, sandstorms, and other pollutants, a protective cover should be installed on the valve stem. electric
The scale on the valve should be kept complete, accurate, and clear. The lead seal, cap, pneumatic accessories, etc. of the electric valve should be complete and intact. The insulation jacket should be free of dents and cracks.
It is not allowed to knock, stand or support heavy objects on the running electric valve; Especially non-metallic electric valves and cast iron electric valves should be prohibited.
1. Electric valves should be stored indoors in a dry and ventilated area, and both ends of the passage must be blocked.
2. Electric valves stored for a long time should be regularly inspected, cleaned of dirt, and coated with rust proof oil on the processing surface.
3. After installation, regular inspections should be carried out, with the main inspection items being:
(1) Wear condition of sealing surface.
(2) Wear condition of trapezoidal thread on valve stem and valve stem nut.
(3) Whether the packing is outdated or ineffective, and if it is damaged, it should be replaced in a timely manner.
(4) After the maintenance and assembly of electric valves, a sealing performance test should be conducted.
Electric valves in operation should have complete and intact valve components. The flange threads and bolts on the bracket are indispensable, and the threads should be intact without any looseness. If the fastening nut on the handwheel is found to be loose, it should be tightened in a timely manner to avoid wear on the connection or loss of hands
Wheel and nameplate. If the handwheel is lost, it is not allowed to replace it with an adjustable wrench and should be promptly equipped. The packing gland is not allowed to be skewed or have no pre tightening gap. For electric valves that are easily contaminated by rain, snow, dust, sandstorms, and other pollutants, a protective cover should be installed on the valve stem. electric
The scale on the valve should be kept complete, accurate, and clear. The lead seal, cap, pneumatic accessories, etc. of the electric valve should be complete and intact. The insulation jacket should be free of dents and cracks.
It is not allowed to knock, stand or support heavy objects on the running electric valve; Especially non-metallic electric valves and cast iron electric valves should be prohibited.
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