The connection methods of PPR pipe fittings and metal pipe fittings mainly include the following:
Flange connection
- Principle: Flange connection is to fix PPR pipe fittings and metal pipe fittings on a flange, and then add flange pads between the two flanges. And finally use bolts to pull the two flanges tight to make them closely combined.
- Features: easy to disassemble, high strength, good sealing performance.
- Application scenario: Large diameter pipe connection, such as the main road connecting valves, check valves, water meters, pumps, etc.. As well as the need for frequent disassembly and maintenance of pipe sections.
Transition joint connection
- Principle: Using a special transition joint, one end is connected to the PPR pipe fitting, and the other end is connected to the metal pipe fitting. This connection method usually needs to be combined with hot melt connection, electric melt connection or thread connection.
- Features: High flexibility, can adapt to different materials and specifications of pipe fittings connection.
- Application scenario: When it is difficult to directly connect PPR pipe fittings to metal pipe fittings, a transition connector can be used for connection.
Hot melt connection
- Principle: At the connection of the PPR pipe fitting and the transition joint, a special heating tool is used to heat the connection part to a molten state. And then the two are quickly pressed together to form a strong connection after cooling.
- Features: high connection strength, good sealing performance, but the operation process needs to strictly control the heating temperature and time.
- Application scenario: It is suitable for high-strength connections, such as water supply systems and heating systems.
Fusion connection
- Principle: At the connection of the PPR pipe fitting and the transition joint, a special fuse pipe fitting is put on. And then the resistance wire inside the fuse pipe fitting is heated, and the connection part is melted and fused together.
- Features: The connection process is simple and fast, and the skill requirements for the operator are relatively low. But the cost of the fuse fittings is high.
- Application scenario: It is suitable for situations where the connection speed is required, such as rush repair operations.
In short, there are a variety of connection methods between PPR pipe fittings and metal pipe fittings, and the specific choice of which method should be comprehensively considered according to the actual situation and needs.
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