is to be set in motion ; at which time the second valve isopened with it, and admits steam to the lower part of the cylin-der. In all other cases the latter is merely a valve of commu-nication, and may be called the equilibrium valve. The thirdvalve may be called the condensing valve. This… … WATTS SINGLE ENGINE. 215 a, Cylinder. b, Piston represented in its primitive position. c, Steam-valve. d, Steam-pipe. e, Equilibrium-valve./, Condensing-valve. g, Pipe leading to condenser. h, Condenser. i, Air-pump. k. Hot-water cistern. I, Air-pump rod. m. m, m, Hand Gear. n. 71, n, Tappets of…
Steam-engines
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