Air and vacuum release valves high pressure

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" (A30 / A71). Allows efficient release of air pockets from pressurized pipes
• Combination air release valves ¾" - 8" (C30 / C30-C / C70). 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
• Surge Protection (anti-slam)

Models

• Plastic PN16
• Metal PN16

Options

• Metal PN25 and PN40
• Drinking water service standards
• Inflow prevention (only combination air and vacuum release valve)
• Surge Protection (anti-slam) (only combination air and vacuum release valve)

Operation film Bermad C30