Mechanics of the household; a course of study devoted to domestic machinery and household mechanical appliances (1918)
Keene, E. S. (Edward Spencer), b. 1864 · New York, McGraw-Hill book company, inc.; · leaf 71
Fig. 50.—Cross-section of damperregulator for steam boiler. Fig. 51.—Steam boiler for househeating, with the damper regulator,in place, attached to the dampers. below the pressure at which the safety valve would act. If inproper working order the damper regulator will so control thedampers that the…
Heating · Lighting · Plumbing
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