Rigid waterproof casing and flexible waterproof casing are intuitively different, the appearance is different, flexible waterproof casing internal rubber water stop ring, such as when used in the pool wall to prevent leakage. Their installation length is different, the standard length of flexible casing is 300mm while the standard length of rigid casing is 200mm, but they have a common point is that they can be lengthened or shortened at will for construction needs.
Waterproof casing is divided into rigid waterproof casing and flexible waterproof casing. Their role is rigid waterproof casing is a steel pipe plus wing ring, installed in the wall, for general piping through the wall, to facilitate the waterproofing of the wall; flexible waterproof casing in addition to the external wing ring, there are internal gear ring and so on, flange inside the wire, sold in sets, can also be processed for their own, for the need to damping pipeline, such as and pump connected to the pipeline through the wall. In other words, if you consider the waterproof performance of both sides of the wall, you should choose a flexible waterproof casing; if you just consider the pipeline through the wall, without considering the wall, the waterproof performance of both sides of the wall and the pipeline displacement deformation, you can choose rigid waterproof casing. Rigid waterproof casing is suitable for pipeline through the wall does not bear the pipeline vibration and expansion deformation of the building, suitable for pipeline through the wall space is limited or pipeline installation before the building or pipeline renewal and transformation. For areas with seismic requirements, such as the use of rigid waterproof casing, a flexible connection should be set up close to the pipeline entering the pool wall or the building's exterior wall.
