Product Information：
This Flexible Downpipe Bunnings helps keep the drain clean, and makes the cleaning of the water pipe simple and safe, saving time and space. The flexible design allows for easier and more versatile connections, it can bend around any obstacles and maintain its shape during installation.
Product Features:
Generally, the function of Flexible Downpipe Bunnings is to compensate the vertical stress tension or compression of the pipe, and the other function is the live connection for maintenance. Normally, one will be installed.
The difference between direct and expansion joints in water supply and drainage pipes
The appearance is different: the straight joint is a straight pipe, and the expansion joint pipe has a corrugated expansion joint outside;
Different uses: straight joints are used to connect pipelines, while expansion joints are used to compensate for the expansion and contraction deformation of the pipeline due to temperature changes;
The interface modes are different: the straight joint interface has three ways: rubber ring interface, glue interface, and flange connection interface, and the expansion joint interface has two ways of flange connection and welding.
Requirements for the structure of the expansion joint
Reasonable design of the support in the piping system is a necessary condition to ensure the normal function of the bellows expansion joint. Different types of bellows expansion joints have different requirements for the support of the piping system.
The Main Anchor is installed on a piping system with one or several unconstrained bellows expansion joints. It must bear the force and moment exerted on it by each pipe section connected to it. For example, the pressure thrust (blind plate force) generated by the medium pressure in the pipeline, the force and moment required to make the expansion joint produce the rated displacement, and the friction force generated by the adjustable guide support and the directional guide support, as well as the pipeline and The weight of the medium and the impact force of the fluid. When the unconstrained bellows expansion joint is selected, the main fixed support must be installed under the following conditions: the blind end of the pipe, the change of the flow direction of the medium, the branch of the pipe, the reduced diameter of the pipe, two corrugations The stop valve or pressure reducing valve on the pipeline between the expansion joints of the pipe.
The secondary fixed bearing (I anchor) is used to bear all loads except the pressure thrust (blind plate force). For straight pipe sections, the secondary fixed support is usually to divide the longer pipe section between the two fixed supports into several pipe section units, so that only one bellows expansion joint is set between each pipe section to ensure that the expansion joint can be normal work.
