In a traditional flowmeter, which direction should you turn the knob to increase the flow of gas?

In a traditional flowmeter, which direction should you turn the knob to increase the flow of gas?

• A. Counterclockwise
• B. Clockwise
• C. Upwards
• D. Downwards

Answer: (A)

In a traditional flowmeter, the amount of gas that reaches the flowmeter is set by a metering valve upstream. The flow is read by a float that rises higher in a tapered tube as the flow increases. To increase flow, you open the metering valve more. Turning the knob counterclockwise loosens the valve and increases the opening, letting more gas through and causing the float to rise to a higher, higher-flow position. Turning it clockwise tightens the valve and reduces flow. Movements up or down don’t affect the valve, since the control is rotational, not vertical. So, increasing flow is achieved by turning the knob counterclockwise.

In a traditional flowmeter, the amount of gas that reaches the flowmeter is set by a metering valve upstream. The flow is read by a float that rises higher in a tapered tube as the flow increases. To increase flow, you open the metering valve more. Turning the knob counterclockwise loosens the valve and increases the opening, letting more gas through and causing the float to rise to a higher, higher-flow position. Turning it clockwise tightens the valve and reduces flow. Movements up or down don’t affect the valve, since the control is rotational, not vertical. So, increasing flow is achieved by turning the knob counterclockwise.