Water Supply

D-040-C | Combination Air Valve "BARAK"


  • Product Catalog:
  • Product Drawings:
  • Install & Maintenance:
  • Install & Maintenance (2):
250 PSI – 3/4", 1", 2


The D-040-C series Combination Air Valve has the features of both an air release valve and an air & vacuum valve. The air release component is designed to automatically release small pockets of air to the atmosphere as they accumulate along a pipeline or piping system when it is full and operating under pressure. The air & vacuum component is designed to automatically discharge or admit large volumes of air during the filling or draining of a pipeline or piping system. This valve will open to relieve negative pressures whenever water column separation occurs.

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: 3/4", 1", 2" threaded male connections, NPT.

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: 3-250 psi
  • Maximum operating temperature: 140°F.
  • Maximum intermittent temperature: 194° F.
  • 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.


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Last Updated on: Wednesday, 07 November 2018