Commercial Shearing’s valve test stand

Second Quarter 2020 Hydraulic systems & components

Commercial Shearing’s hydraulic valve test stand enables the company to offer a valuable service to its customers, helping them to achieve major cost savings in replacement valves. Based in Jet Park, Boksburg, Commercial Shearing is a major supplier of hydraulic equipment and solutions to the mining, earthmoving, agricultural and forestry industries.

With this test stand, Commercial Shearing can fully test all functions in its wide range of mobile control valves. These include flow, port and main relief valves with spool leakage, pilot and solenoid functions and set individual spool flows; and port pressure relief valves. Options available include open, closed centre, load sensing, pilot and solenoid operated.

The test stand is equipped with three hydraulic pumps:

• A load-sensing piston pump with pressure up to 310 bar at 100 l/min.

• A gear pump with pressure up to 240 bar at 47 l/min.

• A gear pump with pressure up to 220 bar at 9 l/min.

It also has a flow meter capable of meas-uring up to 250 l/min for setting individual section flows on stackable valves. The valve shown under test is the model VP Pulsar proportional control valve which has a maximum flow of 190 l/min and a working pressure up to 350 bar.

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