The main function of Plastic pipe coupling is to connect two plastic pipes to ensure the smooth transmission of fluids, while providing a certain sealing performance to prevent fluid leakage.
What are the types of Plastic pipe coupling?
Common types of Plastic pipe coupling include direct joints, elbow joints, tee joints and flexible joints.
Direct joint is a fitting used for pipe connection, and its basic function is to connect two pipes so that they remain in a straight line connection.
Elbow joints include 90-degree and 45-degree elbows, with different diameters at both ends, which are used to connect different pipes. There are two types: equal-diameter elbows and reducing elbows.
Tee joints are used when three pipes meet. There are two types: equal-diameter tees and reducing tees, which are used to merge or divert pipes.
Flexible joints can be installed and disassembled at will, which is very convenient. There are also two types: equal-diameter direct and reducing direct.
What materials are there for Plastic pipe coupling?
1. Polyvinyl chloride (PVC): PVC is a common plastic material with good chemical stability, insulation and processability, so it is widely used in various pipeline systems. PVC can be made into different shapes and sizes as needed to meet different usage requirements.
2. Polyethylene (PE): PE material has excellent corrosion resistance and good flexibility, and is suitable for liquid transportation under various pressure conditions, including drinking water supply systems. PE pipes also have good low temperature resistance and are suitable for use in cold areas.
3. Polypropylene (PP): PP pipes have excellent chemical corrosion resistance and high heat resistance, and are suitable for hot and cold water supply systems in industrial and civil buildings. PP pipes also have good weldability and recyclability, which is easy to install and maintain.
4. Polyoxymethylene (POM): POM pipes have high mechanical strength and stiffness, as well as good friction resistance, and are usually used in industrial pipeline systems that need to withstand high pressure and wear.
How to choose the right pipe fittings?
Choosing the right Plastic pipe coupling requires considering multiple factors, including size, pressure, medium, temperature, state, and type of joint. Here are some specific guidelines:
1. Size: According to the nominal diameter of the pipe, choose the appropriate joint type (such as flange connection, threaded connection, quick joint connection).
2. Pressure: According to the actual working pressure of the pipeline, check the nominal diameter and pressure gauge of the pipeline to decide whether to use high-pressure resistant pipe fittings to ensure safe use.
3. Medium: Consider the chemical properties of the medium transported in the pipeline system, and determine the material of the pipe fittings according to the corrosion resistance of the pipeline material to ensure that the medium will not cause damage to the pipe fittings.
4. Type of joint: Choose different types of joints according to specific needs.
Advantages and characteristics
Plastic pipe coupling types include PVC, PE, PP, etc. These materials are widely used in various fields due to their superior properties, such as corrosion resistance, pressure resistance, and high temperature resistance. For example, PP, as a new type of water pipe material, can be used as both cold water pipes and hot water pipes. Due to its non-toxic, light, pressure-resistant and corrosion-resistant characteristics, it is becoming a popular material. The interface of the PP pipe adopts hot-melt technology, and the pipes are completely fused together. Therefore, once the installation pressure test is passed, it will not have aging and leakage for a long time like aluminum-plastic pipes, and the PP pipe will not scale.
