Document DvKw1BDB8gL0zdN1D3kZNo2od

612 CHAPTER 27 1953 Guide fitting standard, and for 300. !b steel flanges and flanged fittings, than those.shown in.the regular American Standards mentioned previously. Screwed fittings include: nipples or short pieces of pipe of varying lengths; couplmgs of steel or wrought-iron; elbows for turning angles of either 45 deg or 90 deg; return bends, which may be of either the close or open'.pattern, and may be cast with either a back or side outlet; tees; Table'6. American Standard Dimensions, of Elbows, 45-Deg Elbows, Tees and Crosses (Straight Sizes) for Class 125 Cast-Iron Screwed Fittings, ASA B16a-1939 Pipe, Fittings, Welding 613 Table 7: American Standard Dimensions jpf Tees, Crosses"'(Str^ght Sizes), and.Elbows for Class 125 Cast-Iron Flanged Fittings;'ASA B16a-1939 Nominal Pips Sms A Center to End, Elbows. Tess and Crosses cBB OFCenter to End, 45 Deo Elbows . Lengtb Width Thread, or Band,- Min. Min. . y Inside Diameter of Fitting Min. Max. - aB Metal Thickness, Min. Outbids Diameter or Band. Min. H % K l iK . 2 3 314 4 5 6 8 10 12 0.81 0.95 1.12 1.31 1.50 1.75 1.94 2.25 2:70 . 3.08 3.42 3.79 4.50 5.13 6.56 8.08b 9.50b 0.73 0.80 0.88 0.98 1.12 1.29 1.43 1.68 1.95 2.17 2.39 2.61 3.05 3.46 4.28 5.16 5.97 0.32 0.36 0.43 0.50 . 0.58 0.67 0.70 0.75 0.92 0.98 1.03 1.08 1.18 1.28 1.47 1.68 1.88 0.38 0.44 0.50 0.56 0.62 0.69 0.75 0.84 0.94 1.00 1.06 1.12 1.18 1.28 1.47 1.68 1.88 0.540 0.584 0.675 0.719 0.840 0.897 1.050 1.107 1.315 1.385 1.660 1.730 1.900 1.970 2.375 2.445 2.875 2.975 3.500 3.600 4.000 4.100 4.500 4.600 5.563' 5.663 6.625 6.725 8.625 8.725 10.750 10.850 12.750 12.850 0.110 0.120 0.130 0.155 0.170 0.185 0.200 0.220 0.240 0.260 0.280 0.310 0:380 0.430 0.550 0.690 0.800 0.93 1.12 1.34 1.63 1.95 2.39 2.68 3.28 3.86 4.62 5.20 5.79 7.05 8.28 10.63 13.12 15.47 All dimensions given in inches. * Patterns shall be designed to produce castings of metal thickness given in the table. at no point shall be less than 90 percent of the thickness given in the table, k Applies to elbowB and tees only. Metal tVe*"*" crosses; laterals or Y branches; and a variety of plugs, bushings, caps, lock-nuts, flanges and reducing fittings. Reducing fittings as well as bushings, both of which are used in changing from one pipe size to another, may. have the smaller connection tapped eccentrically to permit free drain age of the water of condensation in steam lines or free escape of air in water lines. .Fittings for copper tubing are available in the soldered, flared, or com pression types. Illustrations of each of these types are shown in Fig. 2. A AA PNominal ipe She^ Center to Face Tees, Crosses-** and Elbows Face to Face Tbes . AND ' Crosses0- i m w 2 2J$ 3 3JS, 4 5 6 8 10 12 14 O.D. 16 O.D. 18 O.D. 20 O.D. 24 O.D. 30 O.D. 36 O.D. 42 O.D. 48 O.D. 3K 3K 4 4M 5 5H 6 m 8 9 11 12 14 15 16H 18 22 25 28 31 34 7 m 8 9 10 11 12 13 15 16 18 22 24 28 30 33 36 44 50 56 62 68 Bc Center to Face Long Radiub ELBOW*fE Center to Face 45 Deg Elbows 5 5M 6 6H 7 7K m 9 10^ llH 14 \m 19 21^ 24 26M 29 34 41H 49 56^ 64 IK 2 2K 3 3 3H 4 4K 5 5^ 6H 7K m 8 814 9K 11 15 18 21 24 Diameter of Flange Thickness of Flange. ' Mm. MrTALh Thickness of Body m% mK 54 fTM 5 % 5w 6 % fl 7 `Mb 7'A m K We TO 9 %H 10 % 11 1 13M m 16 m H5i 19 21 IK m Wiie 23M m 1 25 We m 27^ Wb m 32 IVs IK 38K 2K m 46 2% m 53 2H i% 59H 2K 2 All dimensions given in inches. ft Crosses both straight and reducing sizes 18 in. and larger shall be reinforced to compensate for the in-, herent weakness in the casting design. Size of all fittings listed indicates nominal inside diameter of port. c Tees, side outlet tees, and crosses, 16 in. and smaller, reducing on the outlet, have the same dimensions center to face, and face to face as straight size fittings corresponding to the size of the larger opening. Sizes 18 in. and larger, reducing on the outlet, are made in two lengths, depending on the size of the outlet. . ^ Tees and crosses, reducing on run only, carry same dimensions center to face and face to face as a straight size fitting of the larger opening.- * e Reducing elbows and side outlet elbows carry same dimensions center to face as straight size .elbows corresponding to the size of the larger opening. * Special degree elbows, ranging from 1 to 45 deg, inclusive, shall have the same center to face dimensions given for 45-deg elbows, and those over 45 deg and up to 90 deg, inclusive, shall have the same center to face dimensions as given for 90-deg elbows. The angle designation of an elbow is itB deflection from straight line flow and is the angle between the flange faces. 8 Side outlet elbows shall have all openings on intersecting center lines. k Body thickness at no point shall be less than 87$ percent of the dimensions given in the table.