Detailed instructions for using the embedded rigid waterproof sleeve

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Casing for passing through walls (pools, slabs, etc.). It is divided into rigid and flexible types. Allowable amount of deformation after installation -- flexibility ； No deformation allowed -- rigidity. The main difference lies in the areas where they are used: flexible waterproof sleeves are primarily used in areas with high requirements such as civil defense walls and water tanks, while rigid waterproof sleeves that are embedded are generally used in basements and other locations where pipes are required. Purpose of embedded rigid waterproof sleeves: Embedded rigid waterproof sleeves consist of a steel pipe with flange rings (ring-shaped components made of steel that are fitted around the pipe); they are installed within walls, usually concrete walls, to allow ordinary pipes to pass through the wall while helping to ensure the wall’s waterproofing ； If only the passage of the pipe through the wall is considered, without taking into account the waterproofing performance on both sides of the wall after the pipe passes through, as well as the displacement and deformation of the pipe, then a rigid waterproof sleeve that is embedded in place can be used. Purpose of embedded rigid waterproof sleeves: Embedded rigid waterproof sleeves are suitable for buildings where the areas through which pipes pass through walls cannot withstand the vibrations and thermal expansion/contraction of the pipes. They are also appropriate in situations where there is limited space at those points where pipes pass through walls, or when the pipes are installed before the building is constructed, or when the building or pipes need to be renovated. In areas subject to seismic requirements, if embedded rigid waterproof sleeves are used, flexible connections should be installed near the pipes that enter the pool wall or the exterior wall of the building. Type A is suitable for steel pipes, while types B and C are suitable for ductile iron steel pipes and cast iron pipes. Instructions for embedded rigid waterproof sleeves: 1. Embedded rigid waterproof sleeves are suitable for cast iron pipes as well as non-metallic pipes; however, the relevant dimensions should be adjusted taking into account the wall thickness of the pipes. 2. After the wing rings and steel sleeves are processed, apply a coat of primer to their outer surfaces (the primer consists of red lead and cold oil). 3. The material weight listed in the sleeve size table refers to the weight of the steel sleeve (with the sleeve length L assumed to be 200m) and the wing rings. The steel sleeves and flange rings are made of A3 material and welded using T42 electrodes. 4. For the wall at the location where the sleeve passes through it, if it is not a concrete wall, a concrete wall should be used instead. The range over which concrete is poured should be such that for Type II sleeves, this range is more than 200 mm greater than the diameter of the flange (D4), and the sleeve must be firmly fixed in the wall in one go. The filler inside the casing should be compacted tightly. 5. The thickness of the concrete wall at the waterproof sleeve should be no less than 200 mm; otherwise, one or both sides of the wall should be thickened, and the diameter of the thickened portion should be at least 200 mm larger than the diameter of the flange ring (D4).