A.R.I. D-050 NS is a non-slam reduced bore, surge-dampening 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. The Air Valve provides both high-capacity vacuum protection and efficient surge suppression.
Size Unit
Size range
Pressure rating
Working pressure range
A.R.I. D-050 NS L
0.05 - 16 barA.R.I. D-050 NS
0.2 - 16 barA.R.I. D-050 C NS
0.2 - 16 barA.R.I. D-052 NS
0.2 - 25 barA.R.I. D-055 NS
0.2 - 40 barWorking temperature
Maximum working temperature:
60° CMaximum intermittent temperature:
90° CAvailable construction materials
Stainless Steel, Ductile Iron
End connection type
Threaded male BSPT/NPT (2”)
Flanged ends to meet various requested standard (2”-12”)
A.R.I. D-050 NS
A.R.I. D-050 NS
A.R.I. D-055 NS
A.R.I. D-050 NS L
