Stretch Type Butterfly Valve

Product characteristic and application

The Butterfly valve is a kind of dual-purpose product which integrates expansion piece and flange butterfly valve. It is flexible axially within a certain range, which is helpful for the pipeline to expand when hot and shrink when cold, remove the pipeline vibrancy and overcome the deflection caused by the disalignment of pipeline connection within a certain angle range, which is extremely easy for installation and disassembly of the valve pipeline and thus improves the economic performance. It is applicable for food, beverage, pharmacy, purification pipeline and industrial environmental protection, water treatment, high-rise, water supply and drainage pipeline for on/off or regulation of medium flow.

Application Specification

1 Design manufacture according to GB/T 12238

2 Face to face according to GB/T 12221

3 End flange dimension according to GB/T 9113

4 Valve inspection and test according to GB/T 13927