Working Principle of PEX Press Fitting

Apr 15, 2024

The working principle of PEX Press pipe fittings can be mainly divided into the following key points:

 

Pipe insertion and positioning

 

First, the PEX tube is accurately inserted into the socket of the clamp fitting. This step requires accurate positioning between the PEX tube and the clamping fitting so that subsequent clamping operations can proceed smoothly.

 

Use of clamping tools

 

Next, the PEX tube and the fitting are jammed using a special clamping tool. This tool usually has a strong mechanical force to ensure that the PEX tube is firmly stuck in the fitting.

 

Deformation and sealing at entrapment

 

During the clamping process, the bayonet part of the clamping fitting will produce elastic deformation under the action of external force, so as to bite the PEX tube tightly. This deformation ensures a tight connection between the PEX tube and the clamp fitting, while creating an effective seal. In addition, the section shape at the clamp is usually designed to be hexagonal, which further enhances the stability of the connection.

 

The role of O-rings

 

In addition to clamping operation, an O-ring is usually provided between the PEX tube and the clamping fitting. The O-ring serves as a sealing element to provide an additional seal between the PEX tube and the jammed fitting, further preventing leakage.

 

Connection characteristic

 

Through the above working principle, PEX clamping pipe fittings realize the characteristics of anti-leakage, anti-drawing, anti-vibration and anti-high pressure. This makes it widely used in water, oil, gas and other pipeline connections, especially in direct drinking water systems, tap water systems, heating systems, steam systems, industrial tubing systems and industrial gas pipe systems, becoming a more advanced connection.

 

In summary, PEX clamping pipe fittings achieve a firm connection and effective sealing between pipes through accurate positioning, the use of clamping tools, deformation and sealing at the clamping place, and the assistance of O-rings, thus ensuring the safe, stable and efficient operation of the pipeline system.

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