The difference between rigid waterproof casing and flexible waterproof casing

The difference between rigid waterproof casing and flexible waterproof casing

The function and role of rigid waterproof casing

The casing that penetrates the wall (pool, board, etc.). It is divided into rigid and flexible types. After installation, the deformation is allowed to be flexible; the deformation is not allowed to be rigid. The main difference is that the places of use are different. Flexible waterproof casing is mainly used in places with high requirements such as civil defense walls and pools, and rigid waterproof casing is generally used in basements and other places where pipes need to pass through pipes.

The difference between rigid waterproof casing and flexible waterproof casing

The rigid waterproof casing is a steel pipe with a wing ring (a ring made of steel plate is sleeved on the steel pipe), installed in the wall (mostly concrete wall), used for general pipes to pass through the wall, which is conducive to the waterproofing of the wall; in addition to the external wing ring, the flexible waterproof casing also has a retaining ring inside, flange internal thread, which is sold as a set, or can be processed by yourself, and is used for pipelines with shock absorption needs, such as when the pipe connected to the water pump passes through the wall. That is to say, if the waterproof performance on both sides of the wall is considered, a flexible waterproof casing should be selected; if only the penetration of the pipe through the wall is considered, without considering the waterproof performance on both sides of the wall and the displacement and deformation of the pipe after penetration, a rigid waterproof casing can be selected.

How to distinguish between flexible casing and rigid casing

1. Analyze from the appearance:

Rigid waterproof casing: It is composed of steel casing and wing ring, with a simple structure.
Flexible waterproof casing: It is mainly composed of flange casing sealing ring, flange pressure plate, wing ring, bolts and nuts.

2. Usage analysis:

Rigid waterproof casing: mainly used in the walls of buildings that do not need to withstand pipeline vibration and expansion and contraction deformation (therefore, some people also call it: wall-penetrating casing). The general trial wall thickness is 200mm.

Flexible waterproof casing: mainly used in the walls of buildings with earthquake requirements and strict waterproof requirements that withstand pipeline vibration and expansion and contraction deformation, and the general applicable wall thickness is 300mm.

3. According to the model:

Rigid waterproof casing is divided into: a/b/c type, a type is suitable for steel pipes; b type is suitable for cast iron and ductile iron pipes.

Flexible waterproof casing is divided into: a/b type. A type is used for the inner wall of the building, and b type is used for the outer wall of the building.

Article source: https://article-realm.com/article/Business/64280-The-difference-between-rigid-waterproof-casing-and-flexible-waterproof-casing.html