Schroedahl Launches Automatic Recirculation Valves

26 June 2020

Schroedahl, a Circor International brand, has announced the new, self-modulating TDL Automatic Recirculation Valves (ARVs) in 10 and 12 NPS, with high Bypass Flow offering maximum flexibility in bypass trim sizes for pumping systems. These reliable all-in-one pump protection solutions are designed to keep pumping systems in process, firefighting, refinery, power and chemical applications modulating and running smoothly, without cavitation, vibration or overheating. 

The self-operated flow-sensitive Schroedahl TDL Automatic Recirculation Valves operate without a separate power supply or any control system—and begin protection immediately once installed.

Schroedahl TDL Automatic Recirculation Valves combine a high-quality main line check valve and the automatic bypass control system in an innovative and durable design. The valves’ self-actuated integrated bypass control function ensures minimum flow rate, guarding pumps against overheating and cavitation. The systems provide high pump stability—with less vibration and fewer coupling or gear problems—for less downtime and lower maintenance costs. 

These valves are designed and built with high bypass trims size flexibility. TDL ARVs’ high bypass flow offers maximum flexibility in bypass trim sizes for pumping systems with 10 or 12-inch nominal pipe size (NPS). Available in EN/DIN and ASTM materials. 

Image credit: Circor – Schroedahl