The valve handwheel is damaged, the valve stem is bent, the bracket is broken, and the flange sealing surface is bumped and damaged, especially the damage of the gray cast iron valve. A considerable part of it occurs in the valve transportation process. The reason for the above-mentioned damage is mainly caused by the poor understanding of the basic common sense of the valve by the transportation personnel and the brutal loading and unloading operations.
Before transporting the valve, prepare ropes, lifting equipment and transportation tools. Check the valve packaging. If the packaging is damaged, it should be repaired and nailed. It should not be afraid of trouble or fluke; the packaging should meet the standard requirements, and it is not allowed to rotate the handwheel of the packaged and sealed valve; the valve should be in a fully closed state. For the opened valve, wipe the sealing surface clean and close tightly to close the inlet and outlet channels. The transmission device should be packaged and transported separately from the valve.
When the valve is shipped and hoisted, the rope should be tied to the flange or bracket, and never tied to the handwheel or valve stem. Lift the valve gently, don't hit other objects, and place it smoothly. The position should be upright or obliquely, with the valve stem upward. For valves that are not securely placed, they should be tied up with ropes or fixed with pads to avoid collisions during transportation.
When manually loading and unloading valves, it is not allowed to throw the valves down from the car, nor from the ground to the car; the handling process should be orderly, arranged in sequence, and it is strictly forbidden to stack them.
During the transportation of the valve, take care of the paint, nameplate and flange sealing surface. It is not allowed to drag the valve on the ground, and it is not allowed to move the sealing surface of the valve inlet and outlet on the ground.
Valves that will not be installed at the construction site should not be unpacked. They should be placed in a safe place and protected from rain and dust.
