Air pumps.—What is a bucket air pump, and is it single or double acting? What is a piston air pump? What is a plunger air pump? What is a trunk air pump? When is a trunk air pump necessary? [II. 441].
Air-pump valves.—Are a foot valve and a head valve always necessary to an air pump? [II. 441].
Pet cock.—Why are bucket pumps provided with a valve or pet cock? [II. 441].
Bilge injection.—What is a bilge injection? What fittings are necessary for a bilge injection? [II. 441].
Hot-well temperature.—At what temperature is the water in the hot well usually kept? [II. 441].
Use of air chamber.—What is an air vessel or air chamber used on a pump for? [II. 441].
Feed escape.—What is a feed relief, or feed escape valve? [II. 441].
Checked boiler feed.—What causes may act to stop the boiler feed? [II. 441].
Admitting the exhaust.—When the exhaust steam is condensed for boiler-feeding purposes, how soon after the engine has started would you let the exhaust into the feed tank? [II. 441].
Ship’s side discharge.—What is a ship’s side air pump discharge valve? [II. 442].