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technical article
Troubleshoot pressure generating devices
2012-1-9 9:54:32

常见问题及解决方法 Let us understand the common problems and solutions of pressure generating device

I. Difficulty in making pressure

1: regulator valve is not open

Open the regulator

2: The exhaust valve is not closed

Close the exhaust valve

3: the instrument under test is not tightened

Tighten the standard and tested instruments,

4: Seal is damaged

Replace the seal (14X1.5)

5: Position of positive / negative pressure switch


Confirm the positive / negative pressure position

6: Lifting and lifting handle off (2000B)

Tighten the handle clockwise

Leakage of pressure source

1: The end face of the connection thread of the instrument under test is not flat (straight thread)


It is connected with a transition joint, and a Teflon flat pad is added to the end surface to tighten the meter with a tool.

2: Pressure source output port seal is damaged


Replace seal

3: When the instrument under test is tapered


The corresponding transition joint must be used to tighten the raw material belt with the aid of a tool.

4: There is a foreign body in the system, and there is stolen material on the sealing surface of the globe valve


Repeated boosting, rapid pressure relief and erosion of the sealing surface, return to the factory for repair if necessary

5: The instrument under test is leaking


Replace with another meter and try again to determine if the meter is leaking

6: Internal leakage of pressure source


Connect the standard instrument to the pressure source, and tighten the other output ports with random screw plugs. Pressurize to test the tightness. If there is no such phenomenon, it means that the internal components are damaged and returned to the factory for treatment if necessary

其它注意事项 Third, other matters needing attention of the pressure generating device

1: Large amount of oil in the system

Make the pressure many times, and then open the exhaust valve (recheck valve) instantaneously, and repeat it many times to remove oil, water and dirt from the exhaust

2: moving parts have abnormal sounds


Add a little grease to the rotating parts regularly

3: Seal aging


Rubber seals have an aging period, it is best to replace them once a year

4: Positive and negative pressure switching leakage


Switch after confirming that the system is pressureless. If leakage is found at the switch, please replace the seal in time.


中就会注意到这些细节问题 So everyone will notice these details when using the pressure generating device in the future.