The Three-in-One Multifunctional Check Valve consists of components such as the valve body, valve seat, valve stem, spring, and valve disc. When the pump starts, the valve disc opens due to the thrust of the water. At the same time, the spring is quickly compressed under pressure, causing the valve to close. When the water flow approaches zero, the valve disc fully closes, preventing backflow and eliminating the potential for water hammer.This valve effectively performs three functions: check, shutoff, and balancing.