Stainless steel lug butterfly valve in the installation process need to pay attention to the following key matters to ensure its normal operation and long-term stability
1. Preparation before installation
Check the matching of valve and pipe:
Ensure that the specifications, models and materials of the stainless steel lug butterfly valve meet the design requirements and the matching of the pipeline system.
Check whether the valve mark is consistent with the use requirements, including temperature, pressure and other parameters.
Cleaning work:
Remove debris and foreign matter in the pipeline and keep the pipeline clean.
Check the valve channel and sealing surface, if there is dirt, should use a clean cloth to wipe clean.
Check the sealing material:
Check whether the sealing material of the valve is intact, without aging and damage.
Check whether the packing is compressed to ensure the tightness of the packing, while not impeding the rotation of the valve stem.
Second, the installation process
Flange alignment:
Place the valve between the two preinstalled flanges, ensuring that the bolt holes are aligned.
When using flanges for connection, the parallelism and perpendicularity of the flanges should be ensured to avoid tilt or dislocation.
Bolt fastening:
Insert bolts and tighten them evenly to avoid flange deformation or leakage.
When tightening bolts, cross symmetry should be adopted, and gradually uniform force should be applied.
Prevent damage:
During the installation process, the valve should be handled gently to avoid impact or scratches.
Pay special attention to protect the valve sealing surface and valve stem and other key parts.
Third, check after installation
Tightness check:
After installation, tightness test is carried out to check whether there is leakage of the valve.
If there is leakage, the cause should be identified and dealt with in time.
Operation check:
Manually operate the valve to check whether it is open and closed flexibly and without blocking.
If there are electric or pneumatic actuators, the corresponding functional tests should be carried out.
Record and identification:
Make installation records, including installation time, installation personnel, valve model, and specifications.
Attach a clear identification plate on the valve for subsequent maintenance and management.
Iv. Other precautions
Installation position:
Butterfly valves can be installed on horizontal or vertical pipelines, but the installation position should ensure that the use of maintenance and replacement is convenient.
Avoid installing the valve in a position with large vibration or drastic temperature changes.
Maintenance:
Check the wear of sealing surface, packing, bolts and other parts of the valve regularly.
If necessary, promptly replace damaged parts or perform necessary maintenance.
Compliance with specifications:
During the installation process, relevant specifications and standards should be strictly observed to ensure installation quality and safety.