Johnson's New Handy Manual on Plumbing, Heating, Ventilating and Mechanical Refrigeration

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. If direct feed from pump N o. 1 to boiler is wanted proceed as follows: Close valves G. And usw'qves F. And M. The flow will open check valve E and close check valve E; E. If direct feed froni'pump'o. 2 to boiler' is wanted close' valves Fiia'nd Bataan open valves G. And M. Check valves E. And E.' B. Have the same action as whentpu'mp Nsdi 1 isiused.