Maintenance Tips for Blind Valves

Blind valves are among the most reliable valves in pipeline systems. To keep them working dependably all the time, daily maintenance is a must. You don’t need complicated operations—just remember a few key points, and you can ensure their long-term effective performance.

First, keep them clean. Dust and oil stains easily accumulate on the valve surface and can corrode the valve body over time. Wipe it down with a dry cloth regularly. For heavy oil stains, clean with a neutral detergent, rinse with clean water, and then dry thoroughly. Never use strong acids or alkalis; they will damage the valve’s surface. Of course, you can also choose a protected type like a fully enclosed line blind plate valve, which reduces dust and oil erosion from the source.

Second, pay attention to the valve stem condition. The valve stem is crucial for opening and closing the valve. If it rusts or gets stuck, the valve won’t work properly. Apply a little lubricating oil to the stem regularly, then turn it gently a few times to ensure even coverage. This not only prevents rust but also makes opening and closing smoother and effortless.

Third, take good care of the sealing surface. The sealing surface is like the valves “seal strip”—scratches or impurities will cause air or water leaks. Operate the valve gently when opening and closing; don’t use excessive force. If you find small impurities on the sealing surface, brush them off lightly with a soft brush. Never scrape it with hard objects to avoid damage.

Fourth, don’t neglect maintenance during idle periods. If the valve is not in use for a long time, keep it fully open or fully closed—never leave it half-open or half-closed. In addition, cover it with a dust cover to prevent dust and moisture from entering the valve interior and affecting its performance.

Last, regular inspections are essential. Check periodically for loose screws and leaks at the connections. Address small issues promptly before they turn into major, costly problems that cause delays.

The key to maintaining blind plate valves lies in “diligence” and “carefulness”. These simple steps don’t take much time, but they can minimize valve malfunctions, extend service life, and safeguard the safe operation of your pipeline system.