Brief Introduction
The swing check valve consists of a valve body, seat, and disc linked to the hinge. Upon encountering a specified flow rate, the disc rotates to a horizontal position, enabling forward flow. It returns to the valve seat when the flow stops to prevent backflow.
A variety of disc and seat designs exist to ensure compliance with process media characteristics and to meet the requirements of various applications. Typically, a prescribed amount of upstream pressure is required to operate a check valve. Engineers often refer to this minimum pressure as the cracking pressure. Depending on the valve size, check valves require a certain amount of flow rate to achieve stable operation. Therefore they should be sized to determine suitability for the service conditions.
Parameter Information