Cyclopedia of heating, plumbing and sanitation; a complete reference work . Flow /nletFig. 100. Connections for Return Mains. Fig. 103. Distributing Fitting. are generally paired with them, the connections being made on theside as shown in Fig. 102, or at an angle of 45 degrees. The risers should be arranged to favor the radiators on the lowerfloors; since the water tends to rise and pass by the lower radiators. Distributing fittings, as shown inFig. 103, are often used for thispurpose, or the pipes may be ar-ranged as shown in Fig. labor is saved by the useof the special fittings des
Cyclopedia of heating, plumbing and sanitation; a complete reference work . Flow /nletFig. 100. Connections for Return Mains. Fig. 103. Distributing Fitting. are generally paired with them, the connections being made on theside as shown in Fig. 102, or at an angle of 45 degrees. The risers should be arranged to favor the radiators on the lowerfloors; since the water tends to rise and pass by the lower radiators. Distributing fittings, as shown inFig. 103, are often used for thispurpose, or the pipes may be ar-ranged as shown in Fig. labor is saved by the useof the special fittings attic space is available,the overhead-feed system pre-sents certain advantages over thetwo-pipe up-feed method of pip-ing. In residences, single risers are used, these serving for bothsupply and return, the water entering the top of the radiator andflowing back into the same riser from the lower opening inthe radiator. No air-valves are necessary, all air passing upthe risers and out through the vent, on the expansion tank. Theoverhead m
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