Operating principle of the check valve
The operating principle of the check valve is to allow water flow in one direction. The valve allows water to pass when the flow direction in the pipeline matches the arrow on the valve body. In the case of reverse flow, the valve closes and does not allow the flow to pass. When the liquid flow stops, the check valve disc remains in the closed position.
The check valve disc blocks the liquid flow using the force of a spring or the weight of the disc itself. The operation of the check valve does not require external energy sources, making it a direct-acting pipeline fitting.
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