2024-09-30
Precautions for installation of large-diameter fully welded ball valves
When installing large-diameter fully welded ball valves, attention should be paid to key aspects such as pipeline pretreatment, lifting operations, welding specifications, and subsequent inspection and maintenance. The specific steps are as follows:
1. Pipeline inspection and pre-treatment: Before installation, it is necessary to ensure that the interior of the pipeline is clean, free of impurities, rust, etc., to prevent foreign objects from entering the valve. At the same time, it is necessary to check the size and positional errors of the pipeline to ensure that it matches the connection port of the ball valve.
2. Valve lifting:
The lifting rope should be tied to the lifting ear (ring) or flange on the ball valve body, avoiding tying to the handwheel, valve stem or actuator to prevent damage.
During the lifting process, the sealing covers at both ends of the ball valve should not be removed to prevent dust and foreign objects from entering the chamber.
Soft straps should be used for lifting to avoid impact or collision with the ball valve, and corner protection measures should be taken at the edges of the valve.
