Ball check valves

AVK offers ball check valves in DN32-500 with NBR lined balls and in DN600 with PUR lined balls as standard. AVK ball check valves can be installed in horizontal or vertical position.

What is a ball check valve?

Ball check valves operate by means of a ball that moves up and down inside the valve chamber. The seat is machined to fit the ball, and the conical chamber ensures that the ball is consistently guided back into the seat to block reverse flow effectively.

Where are ball check valves used?

Ball check valves are designed to prevent backflow in pipeline systems, making them a critical component in many installations. Ball check valves are often installed at the pump outlet to safeguard the pump and are widely used in wastewater systems, as well as in irrigation networks and fire protection applications.

Ball check valves are ideal for use in pumping stations with limited personnel due to their minimal maintenance needs.

AVK ball check valves installed in wastewater treatment plants

AVK ball check valves are designed for minimal maintenance

AVK ball check valves are self-cleaning. The ball rotates during operation and eliminates the risk of impurities adhering to its surface. The standard ball is designed with an NBR (DN32-500) or PUR (DN600) rubber-lined metal core with rubber hardness optimised to prevent the ball from getting stuck in the seat. The valve’s smooth, full bore supports unrestricted flow with minimal pressure loss, reducing the risk of accumulation of deposits at the bottom, which could prevent tight closure.

Material options for varied environments

AVK ball check valves are available in ductile iron with epoxy coating internally and externally with flanges in DN40-600 and with internal BSP threads in DN32-50. Furthermore, they are available in stainless steel AISI 1.4408 for installation in harsh environments with flanges in DN80, 100 and 150 and with internal BSP threads in DN32-80.