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 222
Fig. 33. Morehead Tilting Non-Return Tilip. … Fig. 34. Morehead Return Trap. 212 HEATING AND VENTILATION be seen that water enters and leaves the trap through the right-hand trunnion under the controlof two check valves, one of which opens toward the trap to permit the condensation to enter thetank, and the other toward the boiler to permit…
Building · Heating · Ventilation
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