The assembly methods of pipe fittings mainly include the following:
Threaded connection: Connect pipes to pipes and pipes to valves through internal and external threads. This connection method is simple to manufacture and use, and has reliable connection. It is suitable for the connection of steel pipes, copper pipes and high-pressure pipes. Its disadvantage is that the pressure is low, and the threads are prone to rot and leakage, so it is mostly used for exposed pipes.
Flange connection: The pipes are connected by tightening the flange of the connector and the bolts and nuts of the fasteners, and the flange gasket in the middle is pressed. Flange connection has high strength and tightness, and is suitable for the connection between equipment and pipes that need frequent maintenance, such as valves, water meters and water pumps. Its disadvantage is that the cost is high, but the bonding strength is high, the tightness is good, and the disassembly and installation are convenient.
Welding connection: Connect two sections of pipes together by electric welding or gas welding. The welding connection interface is firm and durable, not easy to leak, and is suitable for occasions that require firm connection and do not need to be disassembled. Its disadvantage is that the joint is prone to large welding deformation and welding residual stress, which affects the bearing capacity of the joint.
Compression fitting connection: The pipe is pressed onto the fitting by means of a locking nut and an open compression ring. This connection method is suitable for the connection of pipes of different materials and temporary pipe connections. It is easy to install, but the safety factor is relatively low.
Compression fitting: The O-ring is used to produce a sealing effect after being deformed under pressure. This connection method is suitable for aluminum-plastic pipes. It is convenient to construct and the connection is reliable, but the scope of use is small and the safety factor is not high.
Hot-melt connection: The pipe port is heated and melted by a hot melter and then quickly docked. It is suitable for pipes such as PPR and PE. This connection method has a firm and durable interface and is not easy to leak, but it has high requirements for construction technology and tools.
Socket connection: The socket of the pipe or pipe fitting is inserted into the socket, and the annular gap of the plug-in is filled with interface materials. This connection method is suitable for a variety of pipes such as cast iron pipes, plastic pipes and concrete pipes, and has certain flexibility and a wide range of applications.
These different connection methods have their own advantages and disadvantages and are suitable for different scenarios and requirements. Choose the right connection
