- Technical information - Kv values and cavitation
- Technical information - inflow of unwanted air
- Technical information - water hammer
- Product sheet: Dual stage pressure reducing control valve
- Product sheet: PLC control valve
- Product sheet: Pressure reducing control valve with electrical actuator
- Datasheet: Pressure reducing control valve, reduced bore
- Datasheet: Pressure sustaining/relief control valve, reduced bore
- Datasheet: Constant flow control valve, reduced bore
- Datasheet: Pressure reducing control valve, full bore
- Datasheet: Pressure sustaining/relief control valve, full bore
- Datasheet: Constant flow control valve, full bore
- Installation manual: Pressure reducing control valve
- Installation manual: Pressure sustaining/relief control valve
How to apply a battery solution for pressure management?
See our product sheet for AVK dual stage pressure reducing control valve
A pre-programmed PLC controller for pressure management, is that available from AVK?
Yes, see our product sheet for AVK PLC control valve
Can AVK control valves be connected to SCADA systems?
I need a pressure management solution controlled by SCADA, does AVK offer that?
Yes, see our product sheet for AVK pressure reducing control valve with electrical actuator.
What data should I provide to select the right type and size of control valve?
Maximum and minimum flow, continuous flow, maximum and minimum inlet pressure, wanted outlet pressure, pipe size.
Link to our online calculation tool.
What is the typical pressure loss across the control valve?
Typically 0.3 bar for a correctly sized valve.
What is the advantage of a parabolic plug design?
A parabolic plug design gives you a more accurate regulation and stability at low flows.
What is the advantage of adjustment of regulation speed?
You can eliminate fluctuations within sensitive networks, and avoid water hammer and surge problems. You also get full control on level control valves.
What do I do if my control valve opens or closes too fast/slowly?
You adjust the opening or closing speed on the distribution block, using standard tools.
Can I use control valves for high differential pressure?
Yes. If the differential pressure is higher than allowed, according to the cavitation chart use anti-cavitation plug or valves in series. Link to technical appendix about control valves.
What can be done if there is a risk of cavitation?
S859 can be ordered with anti-cavitation trim, or you can install valves in series. An anti-cavitation trim “moves” the cavitation to where it does not cause damage.
Is it possible to modify the control valve to fit another application?
Yes, an AVK control valve is very easy to modify thanks to the modular pilot system, which is easily altered to fit other or multiple applications without replacing the valve. And you don’t need to pressure test it after modification, but a leakage test is recommended.
See video about how to change a pressure reducing valve into a pressure sustaining valve
See video about how to change a pressure sustaining valve into a pressure reducing valve
What tools do I need to operate and maintain an AVK control valve?
Just standard tools like a wrench/spanner and a screwdriver.
How frequently should I maintain my control valve?
All depending on your pipe and distribution network. First check after 1 months, or sooner if the valve isn’t in full control, and then take it from there. In some networks the valve can work several years and function perfectly without maintenance.