Leakage problems in the valve will affect the normal operation of the system and may even cause safety accidents, which need to be handled in a timely and correct manner. Here are the general methods and steps to deal with valve leakage problems:

Safety protection: Before handling valve leakage, you must ensure your own safety. Wear appropriate protective equipment, such as protective clothing, gloves, goggles, gas masks, etc., depending on the nature of the leaking media. At the same time, ensure that the working area is well ventilated and avoid the accumulation of leaky media causing danger.

Close up and downstream valves: If possible, close up and downstream valves of the leak valves and cut off the source of fluid to reduce leakage. This helps create a safer repair environment and reduces the difficulty of handling leaks.

Determine the leakage position and cause: Carefully check the valve and determine the specific position of the leakage. Common leakage positions include the valve stem packing, the valve body sealing surface, the flange connection, etc. The causes of leakage may be caused by wear, corrosion, improper installation, damage to the valve, etc.

How to deal with different leak locations and causes:

Stem packing leakage: If the stem packing leakage is leaking, you can try tightening the packing gland bolts to increase the sealing force of the packing. But be careful not to over-tighten to avoid damaging the packing or valve stem. If the cap bolt still leaks after tightening, the packing may need to be replaced. When replacing the filler, first remove the old filler and then install the new filler in the correct way.

Leakage of the sealing surface of the valve body: For leakage of the sealing surface, minor situations can be repaired by grinding the sealing surface. Use special grinding tools and abrasives to grind the sealing surface to remove scratches and damage from the surface and restore sealing performance. If the sealing surface is severely damaged, the valve or sealing component may need to be replaced.

Leakage at the flange connection: Check whether the flange connection bolt is loose. If so, retighten the bolt according to the specified torque. If the bolts still leak after tightening, it may be that the gasket is damaged and the gasket needs to be replaced. When replacing the gasket, make sure the flange surface is clean and the gasket is installed correctly.

Repair or replace parts: Decide whether to repair or replace valve parts based on the cause and severity of the leakage. For some minor damage, repairs can be performed, such as welding, repair welding, grinding, etc. However, for severely damaged or irreparable parts, new parts must be replaced. When replacing parts, select the appropriate model and specification and make sure the installation is correct.

Test and Inspection: After repair or replacement of parts, reopen the upstream and downstream valves for leakage testing. Check if the valve is still leaking and whether the valve is operating properly. At the same time, check whether the system's pressure, flow and other parameters meet the requirements.

Record and report: Record the process and results of valve leakage, including information such as the time, location, cause, treatment method, replacement parts, etc. of the leakage. This helps analyze the causes of valve leakage and take precautions to prevent similar problems from happening again.

Dealing with valve leakage requires certain professional knowledge and skills. If you are not familiar with the valve structure and maintenance methods, it is recommended to seek help from a professional.