Illinois Society of Architects · Chicago · leaf 461
m to function in a normalmanner. Control at Dampers. The Hoffman Damper Regulatorholds the slight vapor pressure necessary to overcomefrictional resistance to vapor flow in the pipe lines. Control at Return Main Vent. No. 1 i Hoffman VaporVacuum Valve permits quick release of air but prevents… … ^■1 ^ip II y|L^ Hoffman Specialty Company INCORPORATEU Main Office and Factory: WATERBURY, CONN. BostonNev/ York ChicagoMinneapolis Kansas CityLos Angelei 456 TWO-PIPE NON-SHORT CIRCUIT HOT WATER HEATING SYSTEM HOMER R. LINN, Mechanical Engineer, Member American Society Heatingand Ventilating…
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
