How To Choose Applicable Sizing and selection for your ARC valve?

The EDVC Automatic Recirculation Control (ARC )Valve is utilized as a Pump Protections System.
Features: ZDM series automatic recirculatiocontrol valve

ZDM series automatic recirculatiocontrol valve

1. Dependable Operation
2. Modulating
3. Low maintenance
4. Easy to install
5. Dampens of system pulsations
6. Suitable for all fluids
7. Self powered

Application of Automatic Recirculation Control (ARC )Valve Operation of Automatic Recirculation Control (ARC )Valve Automatic recirculation valves protect centrifugal pumps against The main flow positions the check valve at a certain point. The stem of overheating, excessive noise, instability and cavitation during low flow Check valve transmits the motion via a lever to the bypass.
conditions. The bypass system controls the bypass flow in a modulating way and reduce the pressure to bypass outlet level.
If the flow through the pump falls below a certain level the bypass The full minimum flow is bypassed when the check valve is seated.
system opens and the fluid will be recirculated providing the required The bypass is fully closed when the check valve is in its upper position,
minimum flow through the pump. thereby allowing full pump flow to the system.

Fig.1: Drawing of an Automatic Recirculation Valve type ZDM
Drawing of ARC valve