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Welding: Principles and Applicatio...

8th Edition
Larry Jeffus
ISBN: 9781305494695

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BuyFindarrow_forward

Welding: Principles and Applicatio...

8th Edition
Larry Jeffus
ISBN: 9781305494695
Textbook Problem
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What should be done to the valve packing if the valve knob does not turn freely after it has been tightened to stop a leak?

To determine

The step to be taken for valve packing when the knob valve does not turn freely after being tightened to stop a leak.

Explanation

Valve packing is an important component of the valves. The valve packing is covered around the stem of the valve.

The main purpose of using the valve packing is to ensure that the valves do not leak under normal operating conditions.

For stopping the gases from leaking, the knob that is provided to tighten the valve stem packing nut is rotated. In case the knob does not turn freely after stopping the leak, the packing of the valve stem is then needed to be replaced with new one...

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