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The copper valve should be placed in the half-open position first, and the dangerous substances that may exist inside and outside the valve body should be flushed and cleaned. Then close the valve, remove the connecting bolts and nuts on both flanges, and completely remove the valve from the pipeline.
To disassemble the drive device in sequence, it is the actuator, the connecting bracket, the lock washer, the valve stem nut, the butterfly spring, the glam, the wear plate, and the valve stem packing. Then remove the body cover connecting bolts and nuts, separate the valve cover from the valve body, and remove the valve cover gasket. Also make sure the valve is in the closed position, which makes it easier to remove it from the body and then the seat.
It is to push the valve stem down from the hole in the valve body until it is completely removed, and then take out the O-ring and the packing under the valve stem. During this process, be careful to avoid scratching the surface of the valve stem and the sealing part of the valve body stuffing box. .
