Document BRab6DozJRydMZZ0KY8eV0G9J

650 CHAPTER 27 1956 Guide Table 22. Application of Pipe, Tube and Fittings fob Heating and Air Conditioning______;_______ Application Better Class Fob Economy Chilled Water11 Small Installations Large Installations V . 4-in. and smaller 5-in. and larger Cooling Tower Small Installations Large Installations . . Type K or L hard copper Type K or L hard copper Black steel, Sch.'40 Black steel, Sch. 40 Black steel, Sch. 40 Black steel, Sch. 40 Type K, hard copper Wrought iron or black steel, Sch. 40 Type L, hard copper. Black steel, Sch. 40 Type L, hard copper. Black steel, Sch. 40 Underground Water* Small Installations 2-in. and smaller Type K, soft copper Type K, soft copper. Black steel, Sch. 40 Large Installations 3^-in. and smaller 4-in. and larger Type K, soft copper or Galvanized steel, Sch. 40 Cast iron, Class 150 Cast iron, Class 150 Galvanized steel, Sch. 40 City Water Inside Build ing* Small Installations Large Installations Type L, hard copper Type K or L, hard copper Galvanized steel, Sch. 40 Galvanized steel, Sch. 40 or Type L , hard copper Underground Rain Water Conductors Small Installations Under paved areas Large Installations 8-in. and smaller : . 10- to 24-in. 30-in. and larger 5 feet outside bldg, and under paving Vitrified clay or cast iron soil Cast iron soil Cast iron soil XH Vitrified clay Concrete Cast -iron soil XH Vitrified clay or cast iron soil Cast iron soil Vitrified clay Concrete Concrete Cast iron soil XH Interior Rain Water Con ductors Small Installations Large Installations Black wrought iron, Sch. 40 Cast iron soil XH Black steel, Sch. 40 or Galvanized steel, Sch. 40 Cast iron soil XH or Gal vanized steel, Sch. 40 Panel Heating Small Installations Large Installations . 2-in. and smaller 2^-in. and larger Hot Water Heating1* Small Installations Large Installations 1^-in. and smaller 2-in. and larger Type K or L soft copper. Mild black steel. Wrought iron Type K soft copper. Mild black steel. Wrought iron Mild black steel Type L soft copper. Mild black steel Type L soft copper. Mild black steel Mild black steel Type K, hard copper. Black steel, Sch. 40 Type K hard copper. Black steel, Sch. 40 Black steel, Sch. 40 Black steel, Sch. 40 Black steel, Sch. 40 Black steel, Sch. 40 Pipe, Fittings, Welding 651' Table 22. Application of Pipe, Tube and Fittings fob , Heating and Aib Conditioning (Concluded) . Application Betteb Glass Fob Economy Refrigerant*1 3J4-i*>. and smaller 4-in. and larger Type K or L hard copper Type L hard copper Black steel, weld Black steel, weld Steam Heating Small Installations 90 psi and less Large Installations 100 psi and over Return Pipe All sizes , Black steel, Sch. 40 Black steel, Sch. 401 Standard fittings. Black steel, Sch. 80. XH Black steel, Sch. 40. XH fittings fittings Black wrought iron. Stand .Black steeL Sch. 40. ard fittings Standard fittings " Receiver Vent All Sizes Galvanized wrought iron. Black steel, Sch. 40. Standard fittings Standard fittings Sanitary* ..__ Small Installations .Waste: and smaller 2-in. and larger Vents: 23^-in. and smaller 3-in. and larger Large Installations Waste: 2-in. and larger Vents: 2-in. and larger Galvanized wrought iron Cast iron XH Galvanized wrought iron Cast iron XH Cast iron XH Cast iron XH Galvanized.steel, Sch. 40/ Cast iron SW Galvanized steel, Sch. 40 Cast iron SW Cast iron SW Cast iron SW Gas Fired All Sizes Black steel, Sch. 40. Mal Black steel, Sch. 40. Mal leable iron fittings leable iron fittings Fittings for copper water pipe may be either wrought copper or cast brass. Refrigerant fittings on copper pipe must be wrought copper. AU welded fittings should be long turn. r Panel heating copper fittings should be soldered with 95-5 solder. Steel fittings should be welded. Installation tested to 300 psi hydrostatic for two (2) hours. All underground feed and return lines buried in slab, should be equipped with fittings as outlined for Panel heating. e Rouse sewer to main should be cast iron XH. the line before it can be transferred to such equipment as boilers or pumps. By means of solid anchors, the anchors can be used to divide the piping into isolated sections that cannot transmit the stresses to other sections. Hangers are used to support the piping and to take out the bending stresses. They are of the spring, roller, or rod type. Such types gen erally allow the free movement of the pipe and yet maintain full support. The Code for Pressure Piping, ASA B31.1, has strict requirements for the materials used in hangers and supports. The structural properties have a safety factor of five, and consequently there is little chance of failure due to a sudden change of load. There is a type of support for almost every conceivable requirement. Complete information can best be obtained from a hanger manufacturer. APPLICATION OF PIPE, TUBE AND FITTINGS In the application of pipe, tube and fittings it is necessary to comply with regulations contained in local codes and ordinances. Table 22 is