Schroedahl, a Circor International brand released the self-modulation TDL Automatic Recirculation Valves (ARVs) in more than 35% lighter cast material. These all-in-one pump protection solutions are made to keep pumping systems in process, firefighting, refinery, power and chemical applications modulating and running smoothly, without cavitation or overheating. Unlike control valve packages, the self-operated flow-sensitive ARVs function without a separate power supply or any control system, and begin protection immediately once installed.
The ARVs combine a high-quality main-line check valve and the automatic bypass control system in an innovative and durable design. They feature a self-actuated integrated bypass control function to deliver minimum flow rate, protecting pumps against overheating and cavitation. The systems grant high-pump stability for less downtime and lower maintenance costs. Moreover, the modulation bypass function also offers savings for operators with reduced energy consumption for frequent partial load operation.