A.R.I. S-021 is an ultra-compact, automatic Air Release Valve installed on pressurized raw, reclaimed and non-potable water transmission systems. The valve releases accumulated air - improving 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 liquid from the sealing mechanism and helps to avoid deposits or blockage.
Size Unit
Size range
Pressure rating
Working pressure range
Working temperature
Maximum working temperature:
60° CMaximum intermittent temperature:
90° CAvailable construction materials
Reinforced Nylon
End connection type
Threaded male BSPT/NPT or Flanged ends to meet various requested standard
Optional add-on components
One-way Out attachment, allows for air discharge only, prevents air intake.
A.R.I. S-021
