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What kind of expansion joint should be used in water supply and drainage engineering and how to install it

Casing type Telescopic device It is often used in water supply and drainage engineering. The sleeve type expansion device provides great convenience for the installation and replacement of water meters and valves of urban water tower and pump house, and plays a good role in making up for the expansion and contraction problems caused by temperature difference in long-distance pipeline laying.

Installation precautions of sleeve type expansion joint used in water supply and drainage engineering:

1. The installation length should be between large and small length, which can be adjusted according to the actual situation. It is very convenient for the pipeline because of the complex actual installation environment, resulting in the error of butt joint, greatly facilitating the early installation work and speeding up the project progress.

2. During installation, loosen the pressure plate bolt, adjust the installation length, and then tighten the bolt diagonally, without pressure deviation, which can play a complete sealing role and greatly reduce the leakage of medium in the pipeline caused by insufficient contact of the sealing surface.

3. The expansion device should be installed behind the check valve, because the check valve will produce large vibration in the process of opening and closing, and the adverse effect of axial thrust on the pipeline can be greatly alleviated after installing the expansion device.

4. If the expansion joint is used overhead, the corresponding fixed supports shall be installed at both ends. It does not bear the axial tension, and the anti pulling device can be added if necessary.

Since its establishment, Shanghai Huanjing pipeline equipment Co., Ltd. has always adhered to the business philosophy of "taking science and technology as the guide, regarding quality as life, and regarding users as God", adhering to the product quality policy of striving for improvement, and specializing in R & D and production of various products and equipment. Our company adheres to the enterprise spirit of "innovation, excellence, unity and dedication", casting a batch of high-quality and excellent performance products, which have been unanimously praised by new and old customers.

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