[Essential information]
Manual
spiral gate valve and electric spiral gate valve are usually used in
the unloading machine. The diameter of the manual spiral gate valve is
matched with the feed inlet of the unloader. There are two kinds of
square and circular ones.
[Valve structure drawing]
[Standard parameter]
Design standard | API 600、API6D、ASME B16.34、GB/T 12234 |
Structural length | ASME B16.10、API6D、GB/T 12221 |
Connection standard | ASME B16.5、ASME B16.47、GB/T 9113、JB/T 79、HG/T 20592 |
Pressure test | API 598、GB/T 13927、JB/T 9092 |
Pressure temperature rating | ASME B16.34 、GB/T 12224 |
[Valve features]
1, the fluid resistance is small, and the coefficient of resistance is the same length as the pipe section.
2, simple structure, small size, light weight.
3,
reliable and reliable, the current gate valve sealing surface materials
widely used plastic, good sealing, vacuum system has also been widely
used.
4. easy operation, open and close rapidly, from fully open to
fully closed as long as 90 degree rotation, facilitate remote control.
5, easy maintenance, simple valve structure, sealing ring is generally active, disassembly and replacement are more convenient.
6,
in full open or full closed, the ball and valve seat sealing surface
and dielectric isolation, the media through, it will not cause erosion
of the valve sealing surface.
7, gate valve for a wide range of
diameter from small to a few millimeters, large to several meters, from
high vacuum, high pressure can be applied.
[Adaptive condition]
Spiral
gate is the main control equipment of a powder, crystal and grain
material and small volume of material throughput, widely used in
metallurgy, mining, building materials, food, chemical and other
industries to control the rapid flow changes or cut off.