Product selection recommendations for control valves
How to select the right control valve
In order to choose the right valve for your application, the following conditions must be considered:
- Working conditions
- Maximum flow
- Minimum flow
- Continuous flow
- Maximum inlet pressure
- Minimum inlet pressure
- Wanted outlet pressure
- Pipe size
Our online sizing tool provides guidelines for the selection.
Go to control valves product pages.
The importance of strainers and isolating valves
It is highly recommended to install a protection strainer on the inlet side of the control valve, to filter out impurities that could damage the control valve, or cause loss of control. Isolating valves on each side of the control valve facilitate commissioning and maintenance. Installation of by-pass for keeping up the supply, in case of main valve maintenance on the control valve is recommended.
AVK gate valves are available in a vast number of configurations. For isolating control valves, we recommend our standard flanged gate valve with short face-to-face length or the variant prepared for actuator. Find in-depth information about our gate valves at the gate valve section.
Use of air valves
In many cases it is recommended to install an air valve at the inlet of the control valve in order to avoid trapped air pockets in the system. In general air in the system will cause the valve to work less accurate. Air pockets also causes higher energy consumption and therefore higher operating costs, pressure loss and an increased risk of water hammer.
AVK air valves are available in many variants. For control valve installations, we recommend our combination air valves of ductile iron or reinforced polyamide.
