Stop valve advantages
1 . Simple structure, easy to manufacture and maintain.
2 . Small working stroke and short opening and closing time.
3 . Good sealing performance, small friction between sealing
surfaces and long life.
The disadvantages of globe valves are as follows:
1 . The fluid resistance is large, and the force required when
opening and closing is large.
2 . Not suitable for media with particles, large viscosity and easy
to coke.
3 . Poor regulation performance.
The type of globe valve is divided into external thread type and
internal thread type according to the position of the stem thread.
According to the flow direction of the medium, there are
straight-through, direct-current and angular. The shut-off valve is
divided into sealing forms, and it has a packing-sealed shut-off
valve and a bellows-sealed shut-off valve.
Structure of globe valve:
The structure of the globe valve body has straight-through, DC and
right-angle. Straight-through is the most common structure, but its
fluid resistance is greatest. DC fluid has low resistance and is
mostly used for fluids with solid particles or high viscosity.
Right-angle valve bodies are mostly forged, which is suitable for
globe valves with smaller passage and higher pressure.
Notes When Use
1 . It should ensure that the pipe is blown clean before
installation.
2 . When installing, make sure that the flow direction indicated by
the arrow on the valve body should be consistent with the flow
direction of the fluid.
3 . This valve has been degreased. Store and keep clean when
installing.
4 . After the pipeline construction is completed, all the valves on
the pipeline should be opened, and the residue in the pipeline
should be thoroughly and thoroughly kept to ensure that the
pipeline system is clean and free of debris.
5 . The installation system diagram with the oil-free requirements
should be degreased.
6 . Slowly open and close during use.
7 . If the precision parts such as the valve disc, valve seat and
valve stem are worn or damaged, it must be repaired and replaced in
time.
8 . For parts such as gaskets and sealing materials, replace them
with new ones each time.
Certifications
