Illinois Society of Architects · Chicago · leaf 459
The Dunham Trap was the firstfluid Thermostatic Radiator Trap, and the present trap is the first trap with thefloating valve and other features here described. With this radiator trap as a gauge of quality, a number of kindred heating special-ties have been gradually added to Dunham Heating…
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
