Which valve maintains a flow rate constant regardless of load?

Which valve maintains a flow rate constant regardless of load?

• A. Flow regulating valves
• B. Two-way flow regulating valve
• C. Meter-out
• D. One-way control valve

Answer: (B)

Maintaining a constant flow rate under changing load requires a valve that actively compensates for pressure changes in both directions. A two-way flow regulating valve is designed to do just that: it throttles flow in both directions and auto-adjusts to keep the same volume per unit time through the valve as the load pressure varies. This keeps the actuator speed steadier despite different loads. Other options won’t provide this bidirectional, load-compensated regulation: a general flow regulating valve may not maintain constant flow in both directions; a meter-out arrangement controls speed by throttling return flow but the actual flow varies with load; and a one-way control valve (check valve) only allows flow in one direction without regulating the rate.

Maintaining a constant flow rate under changing load requires a valve that actively compensates for pressure changes in both directions. A two-way flow regulating valve is designed to do just that: it throttles flow in both directions and auto-adjusts to keep the same volume per unit time through the valve as the load pressure varies. This keeps the actuator speed steadier despite different loads. Other options won’t provide this bidirectional, load-compensated regulation: a general flow regulating valve may not maintain constant flow in both directions; a meter-out arrangement controls speed by throttling return flow but the actual flow varies with load; and a one-way control valve (check valve) only allows flow in one direction without regulating the rate.