Schroedahl - Model TDL Series -Automatic Recirculation Valve

The SCHROEDAHL Automatic Recirculation Valve is used as a pump protection system for centrifugal pumps. The TDL consists of the check valve section (Fig. 3) with bypass configuration type L (Fig. 4). The lever controls the position of the bushing, which in turn opens less wide the holes in the control head. The minimum flow is thereby bypassed in a modulating way. Applicable for differential pressures up to 40 bar. Standard with non-return function.