stvvalves

 Butterfly valve is a kind of valve which uses round butterfly plate as the opening and closing part and rotates around the valve axis to open, close and regulate the fluid channel. It is mainly used for cutting off and throttling in the pipeline. The butterfly plate of butterfly valve is installed in the diameter direction of pipeline. In the cylindrical passage of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis with a rotation angle of 0 ° C~90 ° C; Between, rotate to 90 ° C, the valve is fully open. Butterfly valve and butterfly rod have no self-locking ability. In order to locate the butterfly plate, worm gear reducer should be installed on the valve rod. Using worm gear reducer can not only make the butterfly plate have self-locking ability, make the butterfly plate stop at any position, but also improve the operation performance of the valve. The streamline design of the butterfly plate can reduce the loss of fluid resistance, so it is an ene...

We all know that there are many kinds of ball valves, including this butterfly valve is one of them. Then the well-known difference between ball valve and butterfly valve is its opening and closing parts, the opening and closing parts of butterfly valve are plates, and the ball valve is a ball. They all rotate around one of their axes. Let’s go on and see what’s the difference between butterfly and ball valves. Distinction One Ball valves and butterfly valves have different cut-off modes: ball valves block the passage through the ball to achieve pipeline cut-off flow; butterfly valves rely on butterfly wings, laying the sealed pipeline will not flow. Difference 2 The structure of ball valve and butterfly valve is different: ball valve is made of valve body, spool and stem assembly, only part of the parts can be seen in the body; butterfly valve is made up of valve body, seat, valve plate and stem, all parts are exposed outside. So it can be seen that the sealing of butterfly...