Which type of valve is used to control flow based on load?

Which type of valve is used to control flow based on load?

• A. Flow regulating valves
• B. Flow control valves
• C. Meter-in
• D. Counterbalance valve

Answer: (B)

Controlling how fast a hydraulic actuator moves by adjusting how much fluid can pass is the key idea. A flow control valve is designed to regulate the rate of flow in a circuit, so it sets the cylinder speed for a given load by restricting or allowing fluid to flow. When the load changes, this same valve can be used to maintain or adjust the speed because the speed is governed by the flow rate reaching the actuator. That direct link between flow rate and actuator speed is why the flow control valve is the best fit for controlling flow based on load.

A counterbalance valve, by contrast, is mainly for holding or lowering a load safely against gravity; it doesn’t directly regulate the flow rate to control speed. Meter-in describes a method of using flow control on the inlet to achieve a desired speed, but the device itself is the flow control valve, which is why the general flow control valve is the correct reference.