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Electric double eccentric half ball valve should be how maintenance

2018-07-09

Electric double eccentric half ball valve usually should be maintained should pay attention to what matters

1. The electric double eccentric half ball valve should be stored in a dry and ventilated room, and both ends of the passage should be blocked.

2. Regularly check all parts of the double eccentric half ball valve equipment, remove dirt, and apply anti-rust oil on the processing surface.

3. The items that should be checked frequently after the half ball valve is installed are:

(1) The sealing condition of the sealing surface should be checked first.

(2) the valve stem and stem nut between the trapezoidal thread wear.

(3) Whether the packing is outdated and invalid, if damaged, it should be replaced in time.

(4) the double eccentric half ball valve after maintenance and assembly, the sealing performance test must be checked.

The manual half ball valve or electric double eccentric half ball valve in operation shall be complete and intact. Bolts on flanges and supports are indispensable, and threads should be intact and no looseness is allowed. If there is looseness, it should be tightened in time. If the fastening nut on the handwheel is found to be loose, it should be tightened in time to avoid wearing the connection or losing the handwheel and nameplate. If the handwheel is lost, it is not allowed to be replaced by a live wrench, and it should be equipped in time. Packing gland shall not be skewed or have no preload clearance. For the electric double eccentric semi-ball valve in the environment susceptible to rain, snow, dust, sand and other dirt contamination, the stem to install a protective cover. The scale on the electric half ball valve shall be complete, accurate and clear. The lead seal, cap and pneumatic accessories of the double eccentric half ball valve shall be complete and intact. The insulation jacket shall be free of dents and cracks.

It is not allowed to knock, stand or support heavy objects on the electric double eccentric half ball valve in operation; especially non-metallic double eccentric half ball valve and cast iron electric valve, it is more prohibited.

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