Cyclopedia of heating, plumbing and sanitation; a complete reference work . Pig. 103. Another Type «>f Hot-Water Radiator valva Pig. 103. Union Elbow. head system, the air will he discharged at the expansion tank, and air-valves will not he necessary at the radiators. Fittings. All fittings, such as elbows, tees, etc., should he of the lang-iurn pattern. If the common form is \\sv(\, they should he a size larger than the pipe, busheddown to the proper size. The long-turn fittings, however, are preferable,and give a much better between the radiatorsand risers may be ma
Cyclopedia of heating, plumbing and sanitation; a complete reference work . Pig. 103. Another Type «>f Hot-Water Radiator valva Pig. 103. Union Elbow. head system, the air will he discharged at the expansion tank, and air-valves will not he necessary at the radiators. Fittings. All fittings, such as elbows, tees, etc., should he of the lang-iurn pattern. If the common form is \\sv(\, they should he a size larger than the pipe, busheddown to the proper size. The long-turn fittings, however, are preferable,and give a much better between the radiatorsand risers may be made with theordinary short-pattern fittings, asthose of the other form are not welladapted to the close connections nec-essary for this work. Pipe Sizes. The size of piperequired to supply any given radiatordepends upon four conditions; first, thesize of the radiator; second, its elevation Fig. 104. Automatic Air-Valve for oKnve the hoiler• third the leno*th ofHot-Water Radiator. Operated aDO\e uie Doner, intra, Uie leilgUl OI by a Float. pipe required to connect it wi
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