Please help: How to deal with oil leakage from valves
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As shown in the figure, is it necessary to replace the packing? Can it be replaced under pressure?
A reminder: work under pressure is absolutely prohibited.
Replacement under pressure – will there be three feet of grass over the grave by next year?
:D: Is this hole meant for observation?
1. This is an early form of valve packing seal. It does not have the capability for re-tightening. If the packing fails to seal, it will no longer be possible to re-seal it by applying preload. 2. As can be seen from the image, this valve does not have a grease injection valve for emergency sealing at its packing area; therefore, it is not possible to achieve emergency sealing by injecting sealing grease from the outside through such a valve. 3. This small hole is a sealing inspection hole, used to detect early on any leakage of the sealing medium and prevent it from entering the operating actuator. Here, the user has had no choice but to use it as a drainage hole. 4. Solution: First, inquire with the manufacturer about the sealing packing structure of this valve. If the pressure used is not high (and the valve structure appears to be designed for low pressures), and conditions permit, re-sealing can be achieved by releasing pressure, removing the valve support, adding packing or seal rings, and then re-securing the valve stem support. 5. Do not operate under pressure; this valve generally does not have a reverse-sealing mechanism.
What was said upstairs is absolutely correct. It is recommended that the original poster consider this advice.
Thank you to “Wudu Bu Zhufu” – the explanation was very detailed, and I’ll adopt it. Actually, we plan to carry out the repairs after releasing pressure overall. :):):)
Remove this bracket. Just add more filler