Illinois Society of Architects · Chicago · leaf 411
No. 2 Hoffman Siphon Airand Vacuum Valve. Prevents return of air to radia-tor when once vented. JIakes avacuuin system from a one-pipe in-stallation. % connections. … Hoffman Return LineValves. For Vapor Vacuum and Modu-lating systems. Also extensivelyused as a steam trap. Freely dis-charges condensation and air, po.sl-tively closing against steam. No.s Valve Vz connections. No. 9Valve ?4 connections. % Hoffman Equalizing Loop. Maintains a steady boiler…
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
