Mechanical equipment of buildings; a reference book for engineers and architects (1916)
Harding, Louis Allen, Willard, Arthur C. (Arthur Cutts), 1878-1960 · New York Wiley · leaf 566
y close, but by closing the exhaust the non-return valve moves backto the open position ready for automatic action. By screwing in the valve disc by turning thehandwheel, the valve can be used as a stop valve, the projection A of the stem coming in contactwith the one on the upper side of the valve… … :^:| Boiler Room SECT/ON A-B Fig. 6. Cross-Section Elevation for Single-Header System.
Building · Heating · Ventilation
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
