Network Solutions - Controlling Water

Control valves are regulating valves. They maintain certain pressure, flow or level regardless of changes in the supply network, and therefore help reduce water losses and contribute to efficient water supply. AVK offer a complete control valve range for various configurations which include the necessary associated valves used in control valve chambers. These valves include Non return valves, Y Strainers as well the required isolation valves for ease of maintenance

Surge Anticipation Valves: Automatically protects the pipe system against pressure surges which mainly happen at pump start-up or in the event of failure.

Altitude Valves: Automatically controls the water levels in reservoirs or tanks.
One-way: The altitude pilot senses the water level and opens to refill when the level drops below a set point.
Two-way: Similar to the 'one-way' but the two-way valve opens for returning the flow if the inlet pressure is lower than the tank/reservoir pressure.

Float Level Valves: Automatically controls the water levels in reservoirs or tanks.
Modulating: The modulating float is remotely installed and controls the tank/reservoir level at a defined set point. The valve closes tightly at the required level and opens when filling is needed.
Non-modulating: The non-modulating float keeps the valve closed until the reservoir/tank level reaches the acceptable, minimum set point. When the minimum point is met, the control valve opens fully to refill until it meets the maximum acceptable set point and the valve closes.

Constant Flow Valve: Automatically maintains the flow demand regardless of any changes in outlet or inlet pressures.

Multi-function and Solenoid Override: The AVK multi-function control valves range includes, for example, combined pressure reducing and pressure sustaining control valve. Many of the variants are available with solenoid override where an electric signal closes or opens the main valve.

Optional configurations
AVK Southern Africa offers a range of accessories such as position indicators and pressure gauges as well as special configurations, for example, with built-in anti-cavitation trim, lifting lugs and flush valve on the filter.

Please contact us for more information about the optional variants and configurations.