Manhole with low temperature butterfly valve

The valve body adopts integral casting technology, which is compact in structure, small in size and light in weight. 2. The sealing ring is novel in design, concise and interchangeable; the unique three-eccentric structure greatly reduces the operating torque; the small flow resistance and the rated flow coefficient Large, about 3 times the single-seat valve of the same size; with manholes, on-site maintenance on the pipeline.