The valves that are operated automatically, or from the motion of the parts, are the slide and expansion valves, the suction and delivery and check valves of all pumps, the air pump bucket valves, the Snifting valves, and the ship's side overboard discharge valves.
"Modern Machine-Shop Practice, Volumes I and II"
Joshua Rose
I really think that if my thoughts and feelings were shut up completely within me, I should burst in a week, like a steam engine without a Snifting-clack, now called by the grander name of a safety-valve.
"Maria Edgeworth"
Helen Zimmern