The STAUFF In-line Flow Meter is ideal for monitoring case drain, pump performance and media flows through hydraulic circuits and sub-circuits. It allows the designer to install it in any orientation (horizontal, vertical or inverted ) and is weather-tight for use outdoors and/or on systems where washdowns are required. It is also a reliable service tool that provides years of maintenance-free performance. Flows can be measured up to a value of 550 l/min / 150 GPM.