The difference between the clamp butterfly valve and the flanged butterfly valve is mainly reflected in the aspects of representation, structure, characteristics, etc. In terms of characteristics, the outer circle of the flange butterfly valve adopts the spherical shape, extending the service life of the valve. The thickness of the clamp butterfly valve butterfly plate is the only resistance when the medium flows through the valve body, and the pressure drop generated by the valve is very small. In addition, the common models of clamp butterfly valves are D71X/F, D371X/F, D373H, D373Y, D373W and so on. Specific about the difference between the clamp butterfly valve and the flange butterfly valve and what is the knowledge of the type of the clamp butterfly valve, and I come to the article to see it! First, where is the difference between the clamp butterfly valve and the flange butterfly valve
1. Different references
(1) Flanged butterfly valve: When the flanged butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is small, so it has better flow control characteristics.
(2) Clamping butterfly valve: installed in the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc-shaped disc rotates around the axis, the rotation Angle is between 0°-90°, and the valve is fully open when it is rotated to 90°.
2. Different structure
(1) Flanged butterfly valve: flanged butterfly valve seal structure adopts polytetrafluoroethylene, synthetic rubber composite seat, which is characterized by the elasticity of the valve is still provided by synthetic rubber and the use of polytetrafluoroethylene friction coefficient is low, not easy to wear, not easy to age and other characteristics, so that the life of the butterfly valve can be improved.
(2) Clamping butterfly valve: clamping butterfly valve has simple structure, small size, light weight, and is only composed of a few parts. And only need to rotate 90° can be quickly opened and closed, simple operation, and the valve has good fluid control characteristics.
3. Different characteristics
(1) Flanged butterfly valve: the connection between the butterfly plate and the valve stem adopts a pin-free structure to overcome the possible internal leakage point. The outer circle of the butterfly plate adopts spherical shape, which improves the sealing performance and extends the service life of the valve, and maintains zero leakage with pressure opening and closing more than 50,000 times. The seal is replaceable, and the seal is reliable to achieve a two-way seal.
(2) Clamping butterfly valve: When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is small, so it has better flow control characteristics. Butterfly valves have two types of seal: bullet seal and metal seal. Elastomeric sealing valve, the sealing ring can be mounted on the valve body or attached to the periphery of the disc.
Second, what are the models of the clamp butterfly valve
The sandwich butterfly valve is a butterfly valve with a sandwich connection mode. According to the driving mode can be divided into: handle to clamp butterfly valve, worm wheel to clamp butterfly valve, electric to clamp butterfly valve, pneumatic to clamp butterfly valve; According to the sealing material, it can be divided into: hard sealing butterfly valve and soft sealing butterfly valve.
Post time: Dec-25-2023