Valve face to seat contact can be checked using:
A) A dial indicator
B) Prussion blue
C) A throating stone
D) Feeler gauges

Question

Quizplus · Accepted Answer

Prussian blue is used to check valve face to seat contact by applying a thin layer to the valve face or seat and then placing the valve against the seat. The transfer of the Prussian blue indicates where contact is occurring, allowing for the assessment of the quality and completeness of the contact area.

Valve Face to Seat Contact Can Be Checked Using