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Valve lapper
A professional who laps valves against valve seats to produce gastight fit, using powered tools. Responsibilities include:
- Applies lapping compound to bearing surfaces of valve and seat.
- Inserts valve stem into valve guide and positions valve against seat.
- Engages holes or slot in top of valve with projections in powered rotary tool (valve grinder).
- Presses and rotates valve against seat, using powered tool.
- May test valve by connecting chamber to hydraulic or pneumatic pressure and observing leaks.
- May rotate valve against seat, using handtool.
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- Part of Speech: noun
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- Industry/Domain: Professional careers
- Category: Occupational titles
- Company: U.S. DOL
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