1. The ball valve needs to be replaced. If the ball valve is flanged or wire-connected, directly disassemble the flange or loosen the threaded button and replace the broken ball valve.
2. If the ball valve is directly welded to the pipeline, it is necessary to stop the operation of the pipeline and perform cutting. This time it needs to be replaced with a flanged ball valve or a threaded ball valve. The flanged ball valve needs two "steel" "Plastic adapter", hot-melt welding with the original pipeline, and then install the flanged ball valve; the threaded type requires two monofilament heads, one end is welded/bonded to the pipe, and the other end is connected to the pipe. The joint of the ball valve is threaded.
3. The above problem belongs to the wire connection type, the name is: double live connection ball valve, directly loosen the lock nut and replace the valve.
4. When buying a valve, the merchant sells a complete valve. When replacing it, remove the union lock nuts at both ends, and directly connect the valve to the original lock nut on the pipeline.