Ball Check Valves

Ball Check Valves

Ball check valves, also referred to as non-return valves, are ball check valves in which liquids can flow in only one direction. In ball check valves, the movable disc that blocks the flow is a spherical ball. Used often used in plumbing, ball check valves are designed to prevent water from flowing backwards through the system. In the ball check valves, the pressure from the liquid forces the ball to move. When the pressure from the fluid stops the ball also stops and the valve automatically closes. Ball check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. All ball-style check valves require gravity and reverse liquid pressure to reseal.

Advances in ball check valves design and materials have significantly increased their popularity. In addition to their versatility, ball check valves are typically small, easy to use, and inexpensive. The ball of ball check valves is typically constructed from metal, although it is also available in other materials as well.

Ball check valves have many useful applications. These ball check valves are common in systems such as sprinklers and various pipe systems. Double ball check valves are often used as backflow prevention devices to keep potentially contaminated water from reentering municipal water supply lines. Ball check valves can handle high pressure and a large volume of fluids. Ball check valves are common in many household devices, such as liquid or gel mini-pump dispensers, spray devices, manual air pumps, and dispensing syringes.