What is the Symbol for Globe Valve?
For a globe valve, a symbol is modified by adding a small dark circle between triangles. You can see that P&ID and isometric symbols are almost the same, with the only change in end types.
Universal Globe Valve Symbol
The symbol for a globe valve is two sideways triangles on the same linear line with the points touching in the middle. Where the points touch, there’s a black circle.
Angle Globe Valve Symbol
Globe valves can also be made to work at angles. If you see two triangles with points touching in an ” L” configuration and a black circle where the points meet, that indicates an angled globe valve.
When will You See Globe Valve Symbols?
Globe valves regulate flow in a single linear direction. When in the open position, the valve allows flow. In the closed position, it stops the flow.
They operate with excellent precision, more than similar gate valves, and they also close and open with a shorter stroke than similar valves.
They’re most often used in cooling systems, fuel lines, turbine lube oil systems, steam lines/systems, and water systems.
What is a Globe Valve Used for?
Unlike the gate valve, the globe valve can be used for regulating flow or pressures as well as complete shutoff of flow. It may also be used sometimes as a pressure relief valve or as a check valve. Compared with a gate valve or ball valve, the globe valve has considerably higher pressure loss in the fully open position.
How to Solve the leakage of the Globe Valve?
Internal leakage is usually damage to the valve seat or the sealing surface of the valve plug. This can grind the seat or the sealing surface of the valve plug, but there is still
An ad hoc condition may be that the valve stroke is not set if it is electric or pneumatic. What is the central leak,
If the valve body leaks, only the valve can be changed.
If the inner leakage is a problem, the sealing surface should be a problem. If the sealing surface is disposed of to see if the result leaks out, the valve is divergent, and the leaking position is different. If the leakage at the filling point is to be treated differently, close or change the packing, we cannot Parking is done with pressure plugging.
The external leakage is also beneficial to handle. Regarding the leakage of the middle flange, tighten the bolt of the middle flange again. If it is not enough, open it.
Look at the damage of the middle flange gasket. Regarding the leakage at the packing, it is necessary to press the packing gland. If the packing is too loose, it is necessary to
Add filler, if it is directly leaking on the body, if it is low pressure, it can be welded. If it is high pressure, just abandon it.
Ping An first, about the problem of internal leakage, the situation is not good, first, may not be shut down, and then shut down
Second, the valve seat seal is damaged, this must be re-grinded. Regarding the damage of the valve core, it is necessary to wash the damage.
Damaged by media impact, but both must be re-welded to the sealing surface.
There are many leakage points in the forged steel stop valve. Most of the external leakage is leaking from the gland, and the gland is opened or added.
The packing should be tightened and the gland should not be leaked. The inner leak is that the sealing surface on the inside of the inner spool is broken, but the practice is
The calendar informs us that some time leaks may be caused by a hard object stuck on the valve core, forming an internal leak, detailed disposal methods
It is necessary to open the valve and close it, and then it will be able to wash away the hard object several times.
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