Telescopic flange butterfly valve

This telescopic butterfly valve is the combination of flange butterfly valve and pipe expansion piece, which not only can regulate the flow, also can stretch and eliminate the internal force generated by the temperature difference. This kind of butterfly can be installed in any direction, without the effect of medium and flow direction, and can also regulate the distance between two flanges.


Telescopic flange butterfly valve suitable for temperature ≤80℃ and is used in petroleum, chemical industry, food, medicine, textile, papermaking, and electric power supply and drainage gas pipelines to regulate flow plates and intercept liquid media. It has the function of compensating the thermal expansion and contraction of the pipeline.

Telescopic flange butterfly valve features:

1. Novel and reasonable design, unique structure, light weight, easy to operate, and quick to open and close.2. This telescopic butterfly valve can not only regulate flow and intercept flow, but also compensate for the thermal expansion and contraction of fermented bean curd caused by the temperature difference in the pipeline. It is also easy to install and disassemble. It is a multi-purpose product in one valve.

Installation Precautions:

1. The inner cavity of this butterfly valve must be cleaned before installation.2. This butterfly valve can expand and contract within a certain range, so it must be loosened before installation. The sealing gland of the expansion part, then adjust the expansion joint to the required position, lock the pipe bolts, and then lock the expansion sealing gland. This valve cannot be used outside the range.