ISG single-stage, single-suction vertical pipeline centrifugal pump.
I believe everyone knows that a foot valve must be installed at the inlet end of the centrifugal pump, but many people do not know why to install a foot valve and what is the function of installing a foot valve. In this regard, Shanghai Shenquan has sorted out the following content for you, and now please follow along to take a look.
The reason why the centrifugal pump should be installed with a bottom valve is because in the process of centrifugal pump work, the water must be introduced into the pump body and the entire water inlet pipeline through a vacuum pump or other methods, when the impeller rotates rapidly, the blades promote the water to rotate rapidly, and the rotating water flies away from the impeller under the action of centrifugal force, and the water in the pump is thrown out, and the central part of the impeller forms a vacuum area. The water from the source is pressed through the pipe network under atmospheric pressure (or water pressure) into the inlet pipe. In this way, continuous pumping is possible.
If the foot valve is not installed, then when the centrifugal pump stops working, all the water in the pipeline will flow back into the pool, so that the vacuum pump must be restarted or refilled into the centrifugal pump when the centrifugal pump is started next time, which is time-consuming and laborious. If the centrifugal pump is installed with a foot valve, then when it stops, the bottom valve will be automatically closed under the pressure of the water, and the water can be left in the pipeline, and the centrifugal pump can be started directly next time, eliminating the need to inject water or open the vacuum pump, which is very convenient.
It is worth mentioning that if the centrifugal pump has a high head or a long outlet pipe, then the centrifugal pump should be installed with a foot valve, which can prevent the water from reversing when the centrifugal pump is reversed, causing mechanical damage or impeller falling off.
Well, the above content is provided by Shanghai Shenquan for you, I hope it can be helpful to you.
Author: Shen Quan.
Title of this article: Why should centrifugal pumps install foot valves?
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