The Most Common Causes and Symptoms of Check Valve Failure
A failing check valve can be a disaster when you're operating any liquid handling equipment. By understanding why valves fail and how to detect the early warning signs of valve failure, you'll be able to prevent them from failing in the first place and avoid costly downtime and repair.
Causes of valve failure
If you're running a system that transports any type of fluid through piping, it's likely that you rely on check valves as a system safeguard. Check valves allow fluid to flow in one direction, preventing backward flow by opening and closing in response to hydraulic pressure. Here are the top reasons for this type of valve failure:
1. Incorrect installation and assembly
2. Insufficient maintenance
3. Reverse flow
4. High temperatures
Symptoms of valve failure
Valves emit warning symptoms when something isn't right. For example, check valves that are starting to fail will vibrate or make a noise indicating that the valve has broken.
A strange noise can also be a sign of 'water hammer' which is a high-pressure surge that occurs when the fluid comes to a stop or changes direction, often causing the disc to slam into the valve. Valves can also start to 'chatter' with repeated opening or closing due to oversizing. If a valve is sticking or leaking, this could be a sign of wear and tear, or that debris or other contaminants are in the pipeline.
Are you unsure about what types of valves you should be using,
or how to install them correctly? Call our toll-free number
on 1-800-367-4180. We have experts on hand to help you install
and maintain a variety of equipment. And to answer questions
about things you've previously tried gone wrong.