A.R.I ARI D-040 2" 50 mm Combination Air Pressure Release & Vacuum Valve

Product Features

• Combines the features of both an air & vacuum valve and an air release valve.
• Triple function:
  • Air & vacuum component discharges large volumes of air during filling of the system.
  • Air & vacuum component admits large volumes of air during drainage and at water column separation.
  • The air release component releases entrapped air in pressurized systems.
• Dynamic design allows for high velocity air discharge while preventing premature closure.
• Innovative rolling seal mechanism.
• Available in sizes: 1/2", 3/4", 1", 2" threaded male connections, NPT or BSPT.

Materials and Corrosion Protection

• The body is made of high-strength composite materials.
• All operating parts are made of specially selected, corrosion- resistant materials.
• D-040-C body is protected by a shell made of Cast Iron ASTM A48 CL.35B.

Application Range

• Working pressure range: 0.2-16 bar.
• Maximum operating temperature: 60°C.
• Maximum intermittent temperature: 90° C.
• For installation:
  • At pump stations
  • Downstream and upstream of shut-off valves After deep-well pumps
  • On long constant-sloped pipeline segments
  • At peaks along the pipeline and at peaks relative to hydraulic gradient.
  • Additional protective shell for anti-vandalism/theft applications.