Vertical check valves are widely used in systems that need to prevent dielectric backflow, such as pump exits, hot water recharge ends, and water suction ends of centrifugal pumps. Its role is to prevent the media backflow may have a variety of consequences, such as the pump outlet does not install vertical check valve, in the sudden shutdown of the pump when the high-speed reflux water will cause a huge impact on the pump impeller, centrifugal pump suction end does not install vertical check valve (bottom valve), each boot needs to pump.
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