Multi-function Check Valve

 

Multi-function Check Valve

1. Pay attention to the storage environment of check valves. They should be stored in a dry and ventilated room, and both ends of the passage should be blocked.

2. The check valve should be checked regularly, the dirt on it should be removed, and the anti-rust oil should be smeared on its surface.

3. The check valve after installation and application should be checked and repaired regularly to ensure its normal operation.

4. Check whether the sealing surface of the check valve is worn or not, and repair or replace it according to the situation.

5. Check the wear of the trapezoidal thread of the valve stem and the valve stem nut, whether the packing is out of date and invalid, etc., and replace it if necessary.

6. The sealing performance of the check valve should be tested to ensure its performance.

7. The check valve in operation should be intact, the bolts on the flange and the bracket are complete, the threads are not damaged, and there is no looseness.

8. If the handwheel is lost, it should be equipped in time and cannot be replaced with an adjustable wrench.

9. The packing gland is not allowed to be skewed or have no pre-tightening gap.

10. If the check valve is used in a harsh environment and is easily contaminated by rain, snow, dust, sand and other dirt, a protective cover should be installed for the valve stem.

11. The ruler on the stainless steel check valve should be complete, accurate and clear, and the lead seal and cap of the check valve should be maintained.

12. There should be no dents or cracks in the insulation jacket.

13. Avoid hitting the check valve during operation, or supporting heavy objects.

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