A.R.I. S-020 is an Automatic Air Release Valve Series installed on pressurized wastewater transmission systems. The valve releases accumulated air from a pressurized system, to optimize pipeline hydraulic efficiency by reducing head losses and improving flow. The unique body shape of the valve, enables a continuous air gap that separates the wastewater from the sealing mechanism and helps to avoid deposits or blockage.
Product Page (PDF)
Size Unit
Size range
Pressure rating
Working pressure range
A.R.I. S-022
0.2 - 25 barWorking temperature
Maximum working temperature:
60° CMaximum intermittent temperature:
90° CAvailable construction materials
Stainless Steel, Cast Steel
End connection type
Valve connections: flanged or threaded BSP/NPT.
Flanged ends to meet various requested standards.
Optional add-on components
One-way Out – allows for air discharge only, prevents air intake.
A.R.I. S-020
