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The flexible waterproof casing has good sealing and is used for supporting pipelines. The pipeline can slide automatically in the casing. It is mainly used in places such as civil air defense with high sealing requirements, pools, pipeline wells and other places. When the rigid waterproof sleeve passes through pipes or other cables, other sealing materials such as linseed need to be inserted into the gap for plugging. The sealing performance is poor, and it cannot be used in places with high sealing requirements. How can I distinguish between flexible waterproof sleeves?
Rigid waterproof casing is a steel pipe with a wing ring, which is installed in the wall for general pipe penetration, which is conducive to the waterproofing of the wall. In addition to the outer wing ring, the flexible waterproof casing has a retaining ring and the like inside, and the flange inner wire It is sold in sets or processed by itself for pipelines that need shock absorption, such as when the pipeline connected to a pump passes through a wall. That is to say, if the waterproof performance of both sides of the wall is considered, a flexible waterproof sleeve must be selected; if only the penetration of the pipeline is considered, and the waterproof performance of the two sides of the wall and the displacement and deformation of the pipeline are not considered after passing through the wall, Can choose rigid waterproof sleeve.
The flexible waterproof casing is different from the air-proof sealed casing. The flexible waterproof casing is suitable for structures where the pipeline passes through the wall subject to vibration or strict waterproof requirements. Civil airtight casing is used to penetrate the position of the civil air defense area. The flexible waterproof casing and the pipeline adopt a flexible connection, and the airproof sealed casing adopts a rigid connection. Civil airtight casing and rigid waterproof casing are similar in structure, except that there is one more wing ring outside the rigid waterproof casing, and there is also a shock wave-proof baffle. The baffle is directly welded to the wing ring and the pipeline. If the air defense casing is set between two air defense zones, both sides of the air defense casing must be provided with wing rings and anti-shock wave baffles.
Because the flexible waterproof casing has its own closed wing ring and protective resistance sheet, it should be treated with caution when the pipeline passes through the closed partition wall. Reserved holes are not allowed, otherwise the civil defense works will be scrapped; the pipeline will pass through the foundation beam or basement wall It can avoid the settlement of the foundation to the pressure of the pipeline. When the thermal pipeline is too long, you need to install a square waterproof sleeve to reduce the expansion of the pipeline due to thermal expansion and contraction. You can also consider using an extension. Type waterproof casing, which is suitable for structures that do not bear pipeline vibration and expansion and contraction at the place where the pipe passes through the wall, and is suitable for the space where the pipe passes through the wall is limited or the pipe is installed first and the structure or pipe is updated. The advantages of flexible waterproof sleeves are many.