Document jm6Nz1y6921oqmYxGkaykmdm5

566 CHAPTER 26 . ' 1950 Guide fitting : standard, and, for 300 lb 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; couplings of steel or wrought-iron; elbows for turning migles 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 or Elbows, 45-Deg Elbows; Tees, and Crosses (Straight Sizes) por Class 125 Cast-Iron Screwed Fittings, ASA Bl6a-1939 Pipe,'Fittings, Welding - ., ggy A Nominal .* Ptra Sub - Center . to End. Elbows. Tees and Crosses c B .B Cento to End. 45 Dto. Elbows Length Width oror Thread, Band, Mm. Mm. - f Inside Diameter or Fitting Mia. Max. aB Metal Thickness,0 . Mm. Outbids Diameter or Band. Min. X % X x i m IX 2 IX 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 8.08>> 9.50*> 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 0.675 0.840 1.050 1.315 1.660 1.900 2.375 2.875 3.500 4.000 4.500 5.563 6.625 8.625 10.750 12.7&0 0.584 0.719 0.897 1'.107 1.385 1.730 1.970 2.445 2:975 3.600 4.100 4.600 5.663 6.725 8:725 10.850 12.850 0.110 0.93 0.120 X.12 0.130 1.34 0.155 1.63 0.170 1.95 0.185. 2.39 0.200 2.68 0.220 3.28 0.240 3.86 0.260 4.62 0.280 . 5.20 0.310 5.79 0.380 7.05 0.430 8.28 0.550 . 10.63 0.690 13.12 0.800 15.47 AQ dimensions given in inches. * * Patterns 'shall be designed to produce of metal thickness given in the table. at no point shall be less than 90 per cent of the thickness given in the table. v b Applies to elbows and tees only. '' Metal thickness . 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 Nominal pipe Sizs^- Center to Face Tees, - Cro8seso-4 and Elbows Face to Facb Tbes and Cao3Sza*-d i ix 2. 214 3 3X 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. zx 3X 4 4X 5 5X 6 &x IX : 8 9 11 12 14 15 16H. 18 . 22. -25 28 31 34 -7 7X 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 Radius ELaow*f*s Center to Face 45 Dbg Elbows DUMETER or. , Flanob Thickness or Flange. Mm. McTAlih Thickxess or Body - 5 5X 6. ix 2 2H *X ' i*A . X . 5 4. j/ 3? *2 6X 7. 7X 8X , 2X 3 3 3X %6 7 7X ; K SX l4 tL 3 2 9 -4 9 '4; 10X nx 14 *X 10 . 5 . 11 l. 5X : i3x . 1 Vff , X 4 X 16X 6X. 16 14 X 19 7X 19 1 Iy l4 21X 24 7X 8 21 23K i% X .1 26X 8X 25 m 14 29 9X 27X IX 34 11 32 IX- l\i 41X 15 ..... 38X 2X ... 14 49 18 46 2X 1% 58X . 21 - 63 2% V4 64 24 59X 2% 2 All dimensions given in inches. `Crosses both straight and reducing sizes 18 in.-and larger shall bereinforoed to compensate for the in herent weakness in the casting deeign.- ^ Size of all fittings listed indicates nominal inside diameter of port. . e Tees, side outlet tees, and crosses, 16 in. and smaller, reducing on the outlet, have the same rfirru^fffnns center to face, and face t face as straight size fittings corresponding to the size of the larger opening. 18 in. and larger, reducing on the outlet, are made in two lengths, depending on the size o? the outlet.' . d,,Tea and.crosses, reducing on run only, carry same dimensions center to face and face to face as a straight sue fitting of the larger opening.. : e Reducing elbows and side outlei 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 oenter to face dimensions as given for.45-deg elbows.and those over 45 deg and up to 90 deg, inclusive, shall.have the f> oenter to face dimensions as given for 90-deg elbows. The angle designation'of an elbow is its deflection from straight line flow and ls.the angle between the flange faces. '- * Side Outlet elbows shall have all openings on mLTwAttng cantor lmw. ..... ` ......................; .. ^ Body thickness at no point shall be less than 874 per oent of the given in table.