Placing a needle valve or flow control valve in the exhaust port of a DCV will make the circuit a

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Multiple Choice

Placing a needle valve or flow control valve in the exhaust port of a DCV will make the circuit a

Explanation:
The key idea is that speed control in pneumatics comes from metering the air flow. Meter-in means restricting air entering the cylinder, which slows extension. Meter-out means restricting air leaving the cylinder, which slows retraction. Placing a needle valve or flow control in the exhaust port of a directional control valve restricts air as it leaves the cylinder, so the retraction is slowed. That’s why this setup is a meter-out arrangement. If the valve were in the supply line, it would be meter-in, slowing extension instead.

The key idea is that speed control in pneumatics comes from metering the air flow. Meter-in means restricting air entering the cylinder, which slows extension. Meter-out means restricting air leaving the cylinder, which slows retraction.

Placing a needle valve or flow control in the exhaust port of a directional control valve restricts air as it leaves the cylinder, so the retraction is slowed. That’s why this setup is a meter-out arrangement. If the valve were in the supply line, it would be meter-in, slowing extension instead.

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