A check valve is a device that is used to regulate the flow of fluid through a system. If it fails, it can cause a lot of damage to the system. This article will teach you how to prevent check valve failure from happening and save yourself a lot of trouble.
A pressure surge or high-pressure shock wave, known as a water hammer, may occur whenever a fluid in motion is abruptly required to come to a halt or alter its direction of movement. In most cases, this occurs with swing-type check valves, in which a flow reversal downstream causes the valve to shut suddenly, producing a pressure wave that travels down the pipe. A water hammer may cause damage to pipe fittings, valves, and even valves.
When a check valve allows water to flow back upstream beyond the downstream side of the check valve, this is known as reverse flow; in other words, there is a flow in both directions via the check valve. This may harm equipment such as discharge pumps because the flow that returns to the pump can force the impeller to spin in the opposite direction, destroying the pump.
When check valves are not installed, maintained, and assembled correctly, just like with any other piece of mechanical equipment, this may result in damage that is both expensive and time-consuming to repair and, ultimately, failure. The valve has to be orientated appropriately for the piping system during the installation process. It is essential to remember that a check valve operation might vary from one model to another.
It is possible for debris in the pipe to get trapped in the check valve, causing the valve to become immobilised in either the open or closed position. In addition, debris that is moving at a high rate of speed might disrupt the one-way check valve and cause harm to the internal mechanism. This may result in components of the valve breaking off or being dislodged, which then causes more debris to flow in the direction of the downstream flow.
Preventative maintenance that is performed correctly and consistently is essential for minimising the risk of check valve failure and maximising the valve’s lifespan.
If you’re having trouble with your Check Valve, Dawsonstech can help. We carry a large inventory of parts so that we can get your car back on the road as quickly as possible. Visit Dawsontech’s website now!