A swing check valve allows forward flow and blocks reverse flow. It provides a strong option for uni-directional homogenous flow applications. The swing check valve’s disc and the rocker connect, allowing them to revolve at an angle around the pin shaft. When the input pressure on the disc exceeds the resistance pressure, fluid flows in the prescribed direction. While the valve opens, the disc separates from its seat and rotates around the pin to a fully open position. When the flow rate drops, the valve disc will rotate back to the closed position. This prevents backward fluid flow.