Working principle of valve expansion joints and double flange limit joints

Time: 2020-08-03
Summary: Working principle of valve expansion joints and double flange limit joints

Working principle of valve expansion joints and double flange limit joints

First, when the valve expansion joint is installed at the proximal end of the pump outlet or at the corner of the pipeline, be sure to indicate the need to add an anti-pull device.

Second, high pressure, high-rise buildings when using valve expansion joint products in the air, the pipeline must have a fixed support or a fixed bracket, the force of the fixed support and the fixed bracket must be greater than the axial force, otherwise the product should be installed with a pull-off limit Device.

Third, in vertical installation and overhead installation, the valve expansion joint products must be equipped with corresponding fixed brackets and force brackets and other anti-pull-off devices to prevent them from being pulled off after being pressed during work.

Fourth, when the limit expansion joint is installed and used, the installation length can be adjusted according to the required length. Generally, the length of the expansion joint can be adjusted well by adjusting the upper nut as a whole according to the use drawing. When the required compensation amount is reached, adjust The above gland bolts and nuts have a good sealing effect, so that the expansion joint will not leak water during use. The sealing ring is the key to the expansion joint product to achieve sealing. When adjusting the limit bolts, serious treatment is required to prevent Extrusion appears to be broken.

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