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Importance of double flange force transfer joint to drinking water pipeline

When installing the water inlet pipe, a pipe material is used, which is double flange Force transfer joint What is the effect of double flange on the installation of drinking water pipe? Under the ring static pipeline equipment network for you to interpret some of the relevant professional knowledge.
The selection of double flange force transfer joint used in drinking water pipeline is very important. The drinking water pipeline is the pipeline system that directly transports drinking and drinking water to residents. The quality of water transported determines people's health. In such an important pipeline, the use of double flange force transfer joint is very important.
Because the double flange force transfer joint is a metal product, it has high tensile and compressive strength, superior soft sealing performance, easy handling and other functions. It is often used in power engineering, metallurgical industry, water supply and drainage, wastewater treatment and other manufacturing industries, and the key role is the connection between water pump, gate valve and pipeline. In the pipeline, it can reasonably compensate and relieve the torsion of the blind plate of the pipeline, and is conducive to the installation, maintenance and replacement of the water pump and gate valve. In fact, it is an ideal matching product in the pipeline installation and operation.
Before the installation of double flange force transfer joint, the model, specification, material, expansion dimension, bearing capacity and correspondence of double flange force transfer joint shall be carefully reviewed in accordance with the design regulations.
Pressure test is required after installation:
After the installation of double flange force transfer joint, the test shall be conducted after the heat treatment and non-destructive testing are qualified. The pressure test shall meet the following requirements:
Liquid is used as test medium for pressure test. When the design pressure of pipeline is less than or equal to 0.6MPa, vapor can be used as test medium. However, preventive measures should be taken. It is forbidden to use vapor for pressure test on brittle materials.
When the site standard does not allow liquid or vapor pressure test, the following methods can be used instead with the consent of the construction unit:
All welds of double flange force transfer joint shall be tested by liquid penetration method or magnetic powder method. The butt weld is inspected by X-ray. When the pressure test is carried out, the restricted area should be divided, and irrelevant personnel are not allowed to enter. After the pressure test, it is not allowed to repair on the official road.

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