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Air and vacuum release valves

Air bubbles in a pipeline system lead to reduced capacity and can damage installations.
The situations described below can result in air in the pipeline system:

  • Starting up the pump
  • During the filling of the installation, air can be trapped in the system
  • Turbulence at pump suction
  • (Per volume unit of water (at 20°C), 2% of air enters the system. In case of pressure and temperature variations, it is possible that the air does not remain in solution.)

To protect the installation against vacuum damage a kinetic or combination air release valve can be used.

The Bermad range of air and vacuum release valves comprises of 3 different types. Depending on the installation requirements one of the following types should be installed:

  • Automatic air release valves ¾" & 1" (A10). Allows efficient release of air pockets from pressurized pipes
  • Kinetic air release valves ¾", 1" & 2" (K10). Evacuates air during pipeline filling and enables large volume air intake in the event of network draining
  • Combination air release valves ¾", 1" & 2" (C10). It evacuates air during pipeline filling, allows efficient release of air pockets from pressurized pipes, and enables large volume air intake in the event of network draining

Features

  • Dynamic sealing – Prevents leakage under low pressure conditions (0.1 bar)
  • Large air-flow capacity.
  • Advanced aerodynamic design with a straight-flow body allowing higher than ever before flow rates
  • Cavitation and surge protection (anti-slam)

Model

  • Plastic PN10

Options

  • Plastic PN16
  • Drinking water mark
  • Inflow prevention (only combination air and vacuum release valve 2")
  • Surge Protection (anti-slam) (only combination air and vacuum release valve 2")

Operation film Bermad C30

 

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