 | American School of Correspondence, Chicago, Charles Lincoln Hubbard - Heating - 1908 - 252 pages
...the reverse of the two-pipe system. In this case the lowest pressure is at the ends of the mains, so that steam introduced into the returns at these points...will be no pressure to force the water back to the Fig. 26. Connections Made to Establish "False" Water-L.iue when Boiler Is below Basement Level. boiler.... | |
 | Architecture - 1909 - 500 pages
...the reverse of the two-pipe system. In this case the lowest pressure is at the ends of the mains, so that steam introduced into the returns at these points...no pressure to force the water back to the Boiler boiler. A check-valve should always be placed in the main return Fig. 27. Arrangement of Piping and... | |
 | 1909 - 444 pages
...the reverse of the two-pipe system. In this case the lowest pressure is at the ends of the mains, so that steam introduced into the returns at these points...will be no pressure to force the water back to the Main Retiarri Fig. 26. Connections Made to Establish "False" Water-Line when Boiler is below Bixsemeut... | |
 | Charles Lincoln Hubbard - Heating - 1909 - 270 pages
...the reverse of the two-pipe system. In this case the lowest pressure is at the ends of the mains so that steam introduced into the returns at these points...boiler. If no steam is allowed to enter the returns, a.vacuum will be formed, and there will be no pressure to force the water back to the boiler. There... | |
 | Louis Derr - Electric engineering - 1909 - 460 pages
...the reverse of the two-pipe system. In this case the lowest pressure is at the ends of the mains, so that steam introduced into the returns at these points...trouble in the pipes connecting between these and (he boiler. If no steam is allowed to enter the returns, a vacuum will be formed, and there will be... | |
 | 1912 - 552 pages
...the reverse of the two-pipe system. In this case the lowest pressure is at the ends of the mains, so that steam introduced into the returns at these points...will be no pressure to force the water back to the WtVfH.fi - ' i- . ' . - f/U.fXKXI' boiler. A check-valve should always be placed in the main return... | |
 | Charles Lincoln Hubbard - Heating - 1914 - 328 pages
...are of large size it is better to drip each riser separately. pressure is at the ends of the mains so that steam introduced into the returns at these points...will cause no trouble in the pipes connecting between them and the boiler. If no steam is allowed to enter the returns, a vacuum will be formed, and there... | |
 | Heating - 1918 - 386 pages
...the reverse of the two-pipe system. In this case the lowest pressure is at the ends of the mains, so that steam introduced into the returns at these points...will be no pressure to force the water back to the Fig. 28. Connections Mnde to Establish "False" Water-Llne when Boiler Is below Basement Level. boiler.... | |
 | Heating - 1918 - 386 pages
...the reverse of the two-pipe system. In this case the lowest pressure is at the ends of the mains, so that steam introduced into the returns at these points...the pipes connecting between these and the boiler. Pig. 26. Connections Made to Establish "False" Water.Line when Boiler is below Basement Level. If no... | |
 | Building - 1919 - 490 pages
...the reverse of the two-pipe system. In this case the lowest pressure is at the ends of the mains, so that steam introduced into the returns at these points...pressure to force the water back to the boiler. A check-valve should always be placed in the main return Fig. 27. Arrangement of Piping and Radiators... | |
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... connection for each radiator. When the return main is overhead, the risers should be dripped through siphon loops; but the ends of the branches should make direct connection with the returns. This is the reverse of the two-pipe system. In this case... 
