The top of the turbine box of the dual method turbine butterfly valve will have a dial and a pointer, which can clearly tell you what state the butterfly valve is in, that is, open or closed, half open and half closed. The flange butterfly valve: the connection between the butterfly plate and the valve stem adopts a pin free structure, overcoming possible internal leakage points. The outer circle of the butterfly plate adopts a spherical shape, which improves the sealing performance and extends the service life of the valve. It can be opened and closed under pressure for more than 50000 times and still maintain zero leakage. The seals are replaceable and achieve bi-directional sealing.
A flange butterfly valve refers to a butterfly valve that is connected by a flange. The installation method of flange butterfly valve is different from that of clamp type butterfly valve. The flange butterfly valve comes with a flange. During installation, the flange on the valve body can be directly connected to the pipeline flange with bolts, without the need for special flange plates. When installing flange butterfly valves on pipelines, a gasket should be added between the flanges on both sides of the pipeline and the valve body flange, but double gaskets cannot be used. When tightening bolts, they should be tightened symmetrically, and the tightening force of each bolt connected by the flanges on both sides should be uniform and consistent.