If the suggested setting for the counterbalance valve is 30% higher than the load pressure, what is the minimum counterbalance setting to hold the 10kg load?

• A. 5.0 bar
• B. 7.0 bar
• C. 10.725 bar
• D. 8.2 bar

Answer: (C)

A counterbalance valve is set to develop a pressure that counteracts the load. In this scenario, the guideline is that the suggested setting should be about 30% higher than the actual load pressure to reliably hold the weight.

For a 10 kg load, the load pressure in the cylinder setup given is 8.25 bar. Applying the 30% margin means the minimum setting needed is 1.3 × 8.25 bar = 10.725 bar. That’s why the correct choice is 10.725 bar.

The other numbers don’t fit the rule: 8.25 bar would be the load pressure itself (without the margin), and the smaller values (5.0, 7.0 bar) are below the required margin, so they wouldn’t reliably hold the load.