Flexible waterproof casing solves the sealing problem between casing and pipe.
Flexible waterproof casing is also known as wall casing, embedded casing, waterproof casing and so on. The commodity is a built-in component of the pipeline, and its basic function is waterproof, leak-filling and foundation settlement prevention. Waterproof casing is divided into stiffness waterproof casing and flexible waterproof casing.
Flexible waterproof casing key with rubber strip, to complete the sealing of the pipe and casing. When flexible waterproof casing is often used as a reservoir, it is a safe passage for the pipeline to the reservoir. The two are critical in different places. Flexible waterproof bushing is mainly suitable for the area with high standards such as air protection wall and reservoir.
Flexible waterproof sleeve is a metal pipe parts, suitable for the pipe through the wall when the vibration or strict waterproof requirements of the structure. General casing can not be sealed, casing and pipe between water seepage. It's also very leaky. Only the application of waterproof casing can deal with the water seepage problem between the casing and the wall, and can not deal with the sealing problem between the casing and the pipe.
In addition to the outer wing ring of the flexible waterproof case, the flange is also fixed inside the ring. Flexible waterproof casing can handle two challenges. Flexible waterproof casing is generally suitable for the pipeline through the wall and subjected to vibration or strict waterproof provisions of the structure. After the shell parts are solved, a finish finish will be carried out on the external open wall (the finish includes mothballs or cold finish). General manufacturers are all based on the analysis and research and development of the Academy of Engineering and Architecture.
Flexible waterproof sleeve is a hardware configuration parts, suitable for pipe through the wall with vibration or strict waterproof requirements of the structure. What are the requirements for sealing characteristics of flexible waterproof bushing?
1. When the surface facing the water is corroded material, rubber seals can be applied to seal the void. Refer to waterproof sleeve standard atlas; Assembly drawing of flexible waterproof casing.
2. Supplementary raw materials for flexible waterproof sleeve: Asphalt hemp, polystyrene insulation board, polyethylene insulation foam board.
3. Polyurethane coating: polysulfide sealing paste, polyurethane material polyurethane coating.
4. The standard tolerance and geometric tolerance of the welding structure shall meet the requirements of JB/T5000.3-1998. Electric welding welding manual arc welding, wire type E4303, level J422. The electric welding seam has the basic appearance, and its specification conforms to GB 985-88.
5. When the flexible waterproof sleeve is produced by the roller bearing, the allowable error on the circle is: D2≤600, D2> 600±0.0035D2.
6. Walls Concrete walls must not be less than 300 thick. Otherwise, the sides of the wall strain thick or thicken. The diameter of the reinforced section shall be at least D5 200.
7. The net weight of flexible waterproof shell shall be calculated according to L = 300. If wall thickness exceeds 300, should calculate independently.
8. When the flexible waterproof casing is passed through the wall, if it is a concrete wall, part of the concrete wall should be removed and replaced. Forging category should be 200 larger than the aperture of the wing ring (D5), and the shell should be forged inside the inner wall at one time.
"Install before piping" - when piping passes through concrete slabs and normal wall tiles, holes are usually embedded in the concrete slabs, and laser cutting of normal walls can also be done in the walls. Before piping on floor tile, remove piping and install casing. Draw a line across the wall, place a support frame, find the slope, and install the casing.