NCCER Hydroblasting Practice Questions - NCCER Hydroblasting Technician Exam

What is the primary purpose of a dump valve (also called a dump-foot or deadman control) on a hydroblasting gun?

To raise pressure on demand To immediately release system pressure when the operator lets go To switch nozzles in-line To regulate flow to multiple lances

Correct Answer:

To immediately release system pressure when the operator lets go

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