Refers to the closure of parts butterfly valve (butterfly valve or plate) for the disk, rotating around the valve shaft to achieve the opening and closing a valve, the main effect in the pipeline and to reduce expenditure by cutting off. Butterfly valve gate is a disc-shaped pieces of the butterfly plate in the valve body around its own axis of rotation, or adjustments to achieve the purpose of headstock. Butterfly full-to full-clearance is usually less than 90 °, and the butterfly stroke butterfly valve is not self-locking capability, the positioning plate to butterflies, it is necessary to install the worm gear reducer stem. The use of worm gear reducer, not only with self-locking butterfly board so that board butterflies stop at any position, but also to improve the valve performance.
Industry-specific characteristics of butterfly valves to high temperature, the scope of the application of higher pressure, valve DN, and the use of carbon steel valve manufacturers, valve plate metal ring seals instead of rubber ring. The use of large-scale high-temperature steel welding butterfly valve manufacturer, mainly for high-temperature medium duct smoke and gas pipelines.
The benefits of butterfly valves as follows:
1, gate to facilitate the rapid, energy, fluid resistance small, operate on a regular basis.
2, simple structure, small size, light weight.
3, the mud can be transported in the pipeline at least I accumulated liquid.
4, under low pressure, can achieve a good seal.
5, regulation of performance.
Butterfly shortcomings are as follows:
1, the use of pressure and working temperature range small.
2, poor sealing.
Butterfly valve according to the structure of the form of bias can be divided into the plate, vertical plate, inclined plate and leveraged. Sealed in accordance with the form can be divided into relatively closed and hard-sealed type two. Generally use the soft rubber type sealing ring seal, hard seal ring-type metal seal used.
By the connection type can be divided into the flange connection and connect to the clip-on; by the way can be divided into manual transmission, gear transmission, pneumatic, hydraulic and electrical several.
Butterfly valve installation and maintenance should pay attention to the following:
1, during installation, the valve should be parked in the closed position.
2, the open position shall be butterfly plate to determine the rotation angle.
3, the butterfly valve with a bypass valve to open the bypass valve to open before.
4, installation manual shall be factory installed, the weight of a large butterfly, setting a solid foundation should be.
ball valve Trunnion Mounted Ball Valve Floating Ball Valve Top Entry Ball Valve Three way ball valve V Type Ball Valve
We can offer more Knife Gate Valve Information.If you need us according your spcification to produce the Knife Gate Valve .
Need, please e-mail to valve401@gmail.com
No comments:
Post a Comment