Product Details
Pneumatic
valve is a valve driven by compressed air. When purchasing
pneumatic valves, only the specification, type and working
pressure are specified to meet the purchase requirements, which
can be used to control the flow of air, water, steam, various
corrosive media, mud, oil, liquid metal, radioactive media and
other types of fluids.
Sudhanafluid
pneumatic valve series: butterfly valve
The
butterfly plate of the butterfly valve is installed in the
diameter direction of the pipeline. In the cylindrical channel of
the butterfly valve body, the disc-shaped butterfly plate rotates
around the axis and the rotation angle is between 0 ° and 90 °.
When it rotates to 90 °, the valve plate is fully
open.
The
butterfly valve is simple in structure, small in size, light in
weight and only composed of a few parts. It can be opened and
closed quickly by rotating 90 °, and the operation is simple. At
the same time, the valve has good fluid control characteristics.
When the butterfly valve is in the fully open position, the
thickness of the butterfly plate is the resistance when the
medium flows through the valve body, so the pressure drop
generated by the valve is very small, so it has good flow control
characteristics. The butterfly valve has two types of seal:
elastic seal and metal seal. Elastic sealing valve, the sealing
ring can be embedded on the valve body or attached to the
periphery of the butterfly plate.
Valves
with metal seals generally have a longer service life than those
with elastic seals, but it is difficult to achieve complete
sealing. Metal seal can adapt to higher working temperature,
while elastic seal has the defect of being limited by
temperature.
If the
butterfly valve is required to be used as flow control, the main
thing is to select the correct size and type of valve. The
structural principle of butterfly valve is particularly suitable
for making large-diameter valves. Butterfly valves are not only
widely used in oil, gas, chemical, water treatment and other
general industries, but also used in cooling water systems of
thermal power plants.
The
commonly used butterfly valves include wafer butterfly valve and
flange butterfly valve. Wafer butterfly valve is to connect the
valve between two pipe flanges with stud bolts. Flange butterfly
valve is to connect the flanges on both ends of the valve to the
pipe flange with bolts.