Valve leakage testing

High resolution, accuracy and repeatability - the keys to hydraulic leak testing
leak testing valves

Hydraulic valves, pumps and actuators face the most stringent testing of any industrial product. Liquid flow measurement is used as a fine tuning process to monitor the machining and assembly of the hydraulic component to achieve the desired flow characteristics. Subsequently, flow measurement is used again during 100% certification of performance over the part’s full range of inputs. Each hydraulic component must pass across a test stand of some kind before it is shipped to the ultimate customer. Inspection through sample testing is not an option for such a high liability product.

Based on a need to test quickly and efficiently, Hydraulic test stand builders are choosing the Max line of positive displacement piston and gear flow meters for their 1000 pulse per revolution output and 0.1% repeatability. This combination of attributes drastically reduces testing cycles. High pulse counts, in as short a time as possible, gives you a data point with more significant figures and statistical validity. The high number of pulses per unit volume quickly satisfies the leak test criteria. Low resolution hydraulic flow meters need to pass 0.1 ml before they create any output. A Max Model P213 will produce a pulse for every 0.001 ml and allow you to measure hydraulic leakage rate in a fraction of the time. Faster testing cycles increases production throughput without adding additional test stands or personnel.

Max equipment specified

The Max P213 meter, with its 0.9 ml/revolution displacement is the industry standard for leakage testing and zero-crossing measurement. If you would like a quote for a similar project, please let us know.

Products Specified for this Application

High resolution, low flow meter Model P001
0.005 to 200 cc/min (0 to 0.053 gpm)...Combined with our highest, 500 bar (7250 psi) pressure rating
Precision low flow meter Model P213
0.5 to 1800 cc/min (0 to 0.48 gpm) with a 210 bar (3000 psi) pressure rating