Animation: A.R.I. D-040 Combination Air Valve in operation

D-040 | Combination Air Valve "BARAK" The D-040 series Combination Air Valve has the features of both an air release valve and an air & vacuum valve. The air release component is designed to automatically release small pockets of air to the atmosphere as they accumulate along a pipeline or piping system when it is full and operating under pressure. The air & vacuum component is designed to automatically discharge or admit large volumes of air during the filling or draining of apipeline or piping system. This valve will open to relieve negative pressures whenever water column separation occurs. for more information: https://www.arivalves.com/products/wa...