Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 230
Safety Valye Main riow Pipe … Fig. 99. Arrangement of Valves for Two Boilers which are to Runludepeuilently or Together. by the plan view represented in Fig. 00. It is important that safety-valves be used with this arrangement, as, in case one boiler is shutdown and then fired up without opening the stop-valves, the pressuredue…
Architecture · Building · Carpentry
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