A.R.I. D-090 Underground Combination Air Valve System integrates the D-040 valve model, encased within a specially designed, compact sub-surface housing for underground usage. Valve maintenance is performed above ground, reducing the hazards of confined space operation.
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 (2”)
Flanged ends to meet various requested standard (2”, 3”, 4”)
Optional add-on components
One-way out attachment, allows for air discharge only, prevents air intake.
One-way In attachment, allows air intake only, not allowing air discharge.
Non-slam, discharge-throttling attachment, allows full air intake, throttles air discharge.
A.R.I. D-090
A.R.I. D-090 Flushing tap
A.R.I. D-090 Flood guard
A.R.I. D-090 Internal frost protection
Installation of A.R.I. D-090-P
Maintenance of A.R.I. D-090-P
