Valve replacement standards and requirements

1> Choose the time to change

The service life of the valve is related to the use of the environment, conditions of use, materials and other factors, so the replacement time should be selected according to the actual situation. Under normal circumstances, the replacement time of the valve should be about 70% of its service life. In addition, when the valve is seriously leaked, damaged or unable to operate normally, it also needs to be replaced in time.

2> Select the appropriate valve type and brand

When replacing the valve, the appropriate type of valve should be selected according to the working conditions and requirements. For example, for high pressure and high temperature media, high temperature and high pressure steel valves should be selected; For non-corrosive media, you can choose some valves with good corrosion resistance. In addition, we should also choose the right caliber, reliable quality brand products.

3> Replace according to specifications

Valve replacement should be carried out in accordance with the specification, including the following steps:

1. Close the valve: Before replacement, the valve must be closed and the internal medium of the pipeline must be emptied.
2. Disassemble the valve: Remove the flange bolt connected to the valve with the appropriate tool, and remove the valve from the flange.
3. Clean the surface: clean the inner and outer surfaces of the valve to maintain good sealing.
4. Install the new valve: Install the new valve on the flange and tighten it strictly according to the tightening torque of the connecting bolt.
5. Commissioning the valve: After the installation is completed, the valve operation test is carried out to ensure that the valve operation is flexible and the sealing is good.

4> Keep good records

After replacing the valve, the replacement date, replacement reason, replacement valve model brand, replacement personnel and other information should be recorded. And in accordance with the requirements of the standard maintenance report.

5> Pay attention to safety

When replacing the valve, you should pay attention to ensure your own safety. The operator must wear relevant safety equipment, such as gloves and goggles. Pay attention to protection during operation to ensure safety.

Conclusion

Through the introduction of this article, we understand the valve replacement standards and requirements. For the replacement of the valve, we need to choose the right time, the appropriate valve type and brand, follow the standard operating process, and do a good job of recording and safety protection after replacement. Only by doing these aspects can we ensure the normal use and safety of the valve.