A.R.I. D-43 is a reduced bore, single-body, Combination Air Valve Series. Installed on liquid transmission systems, the Air Valve is designed to improve hydraulic operation by protecting the pipeline, increasing pipeline efficiency and reducing energy requirements.
Size Unit
Size range
Pressure rating
Working pressure range
A.R.I. D-43 2"
0.1-10 barA.R.I. D-43 3”-8”
0.1-16 barWorking temperature
Maximum working temperature:
60° CMaximum intermittent temperature:
90° CAvailable construction materials
Reinforced Nylon
End connection type
Threaded male or female BSPT/NPT (2”, 3”)
Flanged ends to meet various requested standard (3”-8”)
Optional add-on components
One-way, Out-only attachment, allows for air discharge only, prevents air intake.
Adjustable Non-Slam disc, can also be optionally retrofitted on existing D-43 air valves.
A.R.I. D-43
A.R.I. D-43
Animation of A.R.I. D-043 operation
Animation of A.R.I. D-043 NS operation
Animation of Surge Protection at Pump Stations with A.R.I. D-43 NS Air Valves + Bladder Tanks
