一、U-PVC pipes
1. If the valve is an internally threaded valve, an external threaded transition joint should be used. One end of this transition joint has an external thread, and the other end is a socket that can be bonded to a plastic pipe.
2. If the valve is an external threaded valve, an internal threaded transition joint should be used. One end of this transition joint has an internal thread, and the other end is a socket that can be bonded to the plastic pipe.
3. If the valve is a flanged valve, the connection between the PVC-U pipe and the valve should be flanged. The connection between the plastic pipe and the flange can be bonded, or flanged or flanged with a ring.
二、PP-R pipes
1. If the valve is an internally threaded valve, an external threaded transition joint should be used. One end of this transition joint has an external thread, and the other end is a socket that can be thermally connected to the PP-R plastic pipe.
2. If the valve is a threaded valve, an internal threaded transition joint should be used. One end of this transition joint has an internal thread, and the other end is a socket that can be thermally connected to the PP-R plastic pipe.
3. If the valve is a flanged valve, the connection between the PP-R pipe and the valve should be flanged. The connection between the plastic pipe and the flange can be hot-melt connection, flared flanging or flange with ring can also be used.
三、PE pipes and PB pipes
The method is the same as the PP-R tube
四、C-PVC pipes and ABS pipes
The method is the same as that of U-PVC pipe
五、PE-X pipes, PAP pipes
For these two types of pipes, the size of the pipe is smaller, and the connection method of the pipe is the compression connection and the compression connection. The connection with the valve should adopt the compression or the compression transition joint. For example, the connection between PE-X pipe and internal threaded valve requires an external threaded ferrule transition joint. One end of this joint has an external thread to connect to the valve, and the other end is a ferrule connector to connect to PE-X.
