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Ten advantages of flange globe valve, how much do you knowRelease Date: December 19, 2016
Flange globe valve has reasonable structure, excellent performance, beautiful appearance and wide applicable pressure range. It is mainly used to connect or cut off the medium in the pipeline. It has the advantages of wear resistance, high temperature resistance, good abrasion resistance and long service life. .
Flange globe valve structural features:
1. The flange cut-off valve is well-selected , meets domestic and foreign standards, and has a reasonable structure and beautiful appearance.
2. The sealing surface of the flange cut-off valve disc and valve seat is made of iron-based alloy surfacing or Stellite cobalt-based.
3. Hard alloy surfacing welding, wear resistance, high temperature resistance, corrosion resistance, good scratch resistance and long service life.
4. The flange cut-off valve stem is quenched and tempered and the surface is nitrided to have good corrosion resistance and abrasion resistance.
5. The flange stop valve can adopt various piping flange standards and flange sealing surface types to meet various engineering needs and user requirements.
6. The flange shut-off valve has a full range of valve body materials. The packing and gasket can be reasonably selected according to the actual working conditions or user requirements, and can be applied to various pressure, temperature and medium working conditions.
7. The flange shut-off valve's inverted seal is made of threaded seal seat or body surfacing austenitic stainless steel. The seal is reliable. The replacement of the packing can be performed without stopping, which is convenient and quick, and does not affect the system operation.
8. Convenient maintenance, simple structure of gate valve , seal ring is generally movable, and it is more convenient to disassemble and replace.
9. When fully open or fully closed, the sealing surfaces of the ball and the valve seat are isolated from the medium, and the medium will not cause erosion of the valve sealing surface when the medium passes.
10. Wide range of application, from small diameter to several millimeters, large to several meters, can be applied from high vacuum to high pressure.
The opening and closing parts of the flange globe valve are plug-shaped discs, the sealing surface is flat or conical, and the flap moves linearly along the center line of the fluid. The structure of the flange globe valve has straight-through, direct-current and Right-angled.
Flange globe valve works :
Flange globe valve is a compulsory sealed valve, so when the valve is closed, pressure must be applied to the disc to force the sealing surface to not leak. When the medium enters the valve 6 from below the valve disc, the resistance to be overcome by the operating force is the frictional force of the valve stem and the packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve. The diameter of the stem must be large, otherwise the failure of the valve top bend will occur.