Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 191
Pig. 128, Air Outlet-Valve for Radi- Tttor, Automatically Operated by Expansion and Contraction of Vulcanite Stem. 151 142 HEATING AND VENTILATION … FijJC. 129. Thermostat At- tached to Angle-Valve with Top Removed. shown in section in Fig. 128, which replaces the usual hand-valve atthe return end of the radiator. It is similar in construction to someof the air-valves already described, consisting of a rubber or vulcanitestem closing against a…
Architecture · Building · Carpentry
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