WATER-SAVING CHECK VALVE

摘要

A water-saving check valve comprising a valve body (100), a valve core (200), and a spring (300). A water path (110) is arranged within the valve body (100); a porous surface within the water path (110) comprises a sealing section (111) and a water-saving section (112). A sealing ring is arranged outside of the valve core (200). The top of the spring (300) is held against the valve core (200), exerting an elastic force on the valve core (200). If the water in the water path (110) flows forward and the water pressure is greater than the elastic force, then the valve core (200) is moved to have the sealing ring (210) positioned in the water-saving section (112), and the sealing ring (210) is distended radially outwards to reduce the cross-sectional area between the outer circumference of the sealing ring (210) and the porous surface within the water-saving section (112); otherwise, the sealing ring (210) is positioned in the sealing section (111), and the porous surface within the sealing section (111) is sealed by the sealing ring (210).