How to Connect Polyurethane Foamed Insulation Pipe with Flange
Flange device is an important part to ensure the normal operation of polyurethane foamed insulation pipe. It must obey the principle of device and tighten the flange.
1. Before the first flange device, the flange sealing surface and gasket should not be defective when the type and material are checked to meet the requirements.
2. Flange connection should be kept parallel. There should be no way to eliminate the inclination of flange by bolt tightening. This will cause the flange to be subjected to excessive force and split, resulting in leakage at the valve.
3. Sealing gaskets between flanges are well controlled by 2 mm larger inner diameter than flange inner diameter. Assuming that large-caliber gaskets need to be spliced and disposed of, the method of inclined lapping is selected to be embedded. Flat lapping can not be used to prevent leakage of gaskets lapped by durable light. And the flange gasket can only use one layer, not double or offset.
4. Bolts of different specifications should be used for flange hoop tightening bolts. For simple construction, the purpose of the bolt device should be uniform (the nut is located on the side of the flange with different specifications). Choose the opposite way to tighten the bolt. In this way, it is no harm to make the flange force uniform and the clamping effect is good.
The above content is provided by Shandong Haipo Pipe Technology Development Co., Ltd. For more knowledge, please pay attention to our polyurethane insulation pipe manufacturer https://www.sdhpgy.com, thank you!!
