Question:

A wing type Air Valve Control is provided on the top of the spark plug cleaner to control the flow of ............... during sandblast cleaning of spark plugs.

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Tip: Remember: Spark plug cleaners = blasting = air + abrasive material!
Updated On: Jun 30, 2025
  • air and sand
  • pressure
  • current
  • sand
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The Correct Option is A

Solution and Explanation

Spark plug cleaners work on the principle of blasting an abrasive material to clean carbon deposits.
The wing type Air Valve Control regulates the flow of both air and sand inside the cleaner.
Compressed air carries the sand particles and directs them onto the spark plug electrodes.
Controlling both air and sand ensures efficient cleaning without damaging the spark plug.
If only air or only sand is controlled, cleaning efficiency drops.
Pressure is just the force behind the flow; the actual materials flowing are air and sand.
Therefore, the right answer is air and sand.
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