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All-in-One Pump Protection Automatic Recirculation Valves in Cast Material

Schroedahl’s self-modulating TDL Automatic Recirculation Valves are now available in more than 35% lighter cast material.

1911np Schroedahl

These all-in-one pump protection valves are designed to keep pumping systems in process, firefighting, refinery, power and chemical applications modulating and running smoothly, without cavitation or overheating, and without the complexity and cost of using control valves for the purpose: They. operate without a separate power supply or any control system, and begin protection immediately once installed. The valves’ self-actuated integrated bypass control function ensures minimum flow rate, guarding pumps against overheating and cavitation. They provide high pump stability with less vibration and fewer coupling or gear problems. The valves are designed and built with high bypass trims size flexibility and with a wide variety of materials. Their high bypass flow offers maximum flexibility in bypass trim sizes for pumping systems from 10- to 20-inch nominal pipe size (NPS). Available in EN/DIN and ASTM materials, they also feature a compact cast housing design for lightweight installation.

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