When both upstream and downstream pressures of a pressure-compensated flow control valve increase, the flow rate _________.

When both upstream and downstream pressures of a pressure-compensated flow control valve increase, the flow rate _________.

• A. Increases
• B. Decreases
• C. Stays the same
• D. Stops

Answer: (C)

The main idea is that a pressure-compensated flow control valve maintains a constant flow rate despite changes in pressures on either side. It uses a compensating mechanism to adjust the throttling as inlet or outlet pressure varies, keeping the nominal flow set by the valve essentially fixed. When both upstream and downstream pressures rise together, the compensator senses the change and adjusts the orifice to keep the same flow you set. In other words, the device actively counters the effect of pressure changes so the output flow doesn’t wander, as long as you stay within the valve’s operating range. If you didn’t have compensation, changes in supply pressure or load pressure would typically alter flow. The option that the flow rate remains the same aligns with how these valves are designed to operate, within their limits.

The main idea is that a pressure-compensated flow control valve maintains a constant flow rate despite changes in pressures on either side. It uses a compensating mechanism to adjust the throttling as inlet or outlet pressure varies, keeping the nominal flow set by the valve essentially fixed.

When both upstream and downstream pressures rise together, the compensator senses the change and adjusts the orifice to keep the same flow you set. In other words, the device actively counters the effect of pressure changes so the output flow doesn’t wander, as long as you stay within the valve’s operating range.

If you didn’t have compensation, changes in supply pressure or load pressure would typically alter flow. The option that the flow rate remains the same aligns with how these valves are designed to operate, within their limits.