Ludy, Llewellyn V., 1875- [from old catalog], American Technical Society · Chicago, American technical society · leaf 151
valve rod passes. This valve rod is prolonged to a smallbalancing piston, placed directly over the main valve. The upperend of the balancing cylinder does not admit steam, so that thesteam pressure below the balancing piston will practically carry theweight of the piston valve, thus relieving the… … Fig. 46. Trick Valve Shown in Mid-Position especially those having a plain slide valve with short travel. Thisdifficulty may be overcome by means of the double-ported valveshown in Fig. 45. It is equivalent to two plain slide valves, eachhaving its laps. The inner valve is similar to a plain slide…
Indicators for steam-engines · Steam-engines
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