It is unsafe to test a hydraulic pump using a load cell, when there is no over-pressure protection. An over-pressure condition can be inadvertently caused if:

ONE: you omit to open the load valve after installing the flow-meter assembly, and you start the pump.

TWO: you inadvertently close the load valve while testing the pump.

The new HYDRA-CHECK® flow-meter with integral safety relief valve solves this problem. It allows you to test pumps safely and effectively when there is no in-circuit protection. In addition, it is completely reverse-flow capable.

This feature, further enhances safety when testing hydraulic cylinders.

PREVENTS CYLINDER LOCKUP - Without reverse-flow capability an inline flow-meter will lock a loaded cylinder (vertical) and create a potential safety hazard - a reverse-flow capable flow-meter prevents this.

PREVENTS PRESSURE-INTENSIFICATION - In addition, when a non-reverse flow capable flow-meter is installed on the live-end of a single-rod, double-acting cylinder, it will cause pressure-intensification if the cylinder rod is extended during the test - a reverse-flow capable flow-meter prevents this.