A.R.I. D-070 Q is a Dynamic Combination Air and Pressure Relief Valve, combining two solutions in one, for maximum line protection. The Pressure Relief component allows quick- release of excessive line pressure while maintaining safe, gradual closing. When pressure rises above the set point, water is released from the valve outlet. The D-070 Q Valve prevents up-surge by discharging air from pressurized water lines in a gradual, controlled manner. When vacuum occurs, the valve emits air into the system to prevent impending down-surge. This solution protects the pipeline from excessive pressure, eliminating bursts and water loss.
Size Unit
Size range
D-070 P Q
DN50 - DN100 (2" - 4")D-070 Q (Metal)
DN80 (3")Pressure rating
Working pressure range
D-070 P Q (Reinforced Nylon)
0.2 - 10 bar, 0.2 - 16 barD-070 Q (Metal)
0.2 - 16 barWorking temperature
Maximum working temperature:
60° CMaximum intermittent temperature:
90° CAvailable construction materials
Reinforced Nylon, Ductile Iron
End connection type
Threaded BSP/NPT (Reinforced Nylon) or flanged ends to meet various requested standards
Optional add-on components
Bug Screen – prevents the intrusion of debris or insects into the air valve (2” – 3”)
A.R.I. D-070 Q
A.R.I. D-070 Q
A.R.I. D-070 Q
