Document XROB8xoOGeoyNpR0xMmOdeNOB

580 CHAPTER 26 1951 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 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-Deq Elbows, Tees and Crosses (Straight Sizes) for Class 125 Cast-Iron Screwed Fittings, ASA B16a-1939 pipe, Fittings, Welding 581 Table 7. American Standard Dimensions of Tees, Crosses* (Straight Sizes), and Elbows for Class 125 Cast-Iron Flanged Fittings, ASA B16a-1939 Nominal Pips Sob A Center to End, Elbows. Tees and Crosses cB B Center to End. 45 Deo Elbows Length op Thread, Min. Width op Band, Min. F Inside Diameter or Fitting Mia. Max. GB Metal Thickness,0 Min. Outside Diameter op Band. Mm. X Vs X X I IX ix 2 2X 3, SX 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 9.506 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 12.750 0.584 0.719 0.897 1.107 1.385 1.730 1.970 2.445 2.975 3.600 4.100 4.600 5.603 6.725 8.725 10.850 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 60 percent of the thickness given in the table. b Applies to elbowB and tees only. Metal thicknms 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 Size1*-* Center to Face Tees, Crosses-0 and Elbows Face to Face Tbbb ano Crosses*-0 i IX i y, 2 2X 3 SX 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. m sx 4 *x 5 5X 6 6X 7X 8 9 11 12 14 15 16X 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 B Center to Face Long ERLBaOdiwoesf'g c Center to Face 45 Deo Elbows Diameter op Flange Thickness or Flange. Min. Metai Thickness or Boot 5 5X 6 m 7 7X SX 9 10X nX 14 16X 19 2l`A 24 2&X 29 34 HX 49 56K 64 m 2 2X 2X 3 3 SX 4 iX 5 5X - sx 7X 7X 8 SX ox 11 15 18 21. 24 4X m 5 6 7 7X SX. 9 10 11 1SX 16 19 21 2SX 25 2ZX 32 3SX 46 53 59X We X He X `We X `We 'We `We 1 ix 1We IX 1M m 1We 1'We IX 2X 2X 2X 2X We 54 Ms $4 54 % Us H $4 % X `We % 1 l We IX ix m m 1'We 2 All dimensions given in inches. * Crosses both straight and reducing sizes 18 in. and larger shall be reinforced to compensate fOT the in herent weakness in the casting design. b Size of all fittings listed Indicates nominal inside diameter of port. 0 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. d 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. 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 as 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 its deflection from straight line flow and is the angle between the flange faces. * Side outlet elbows shall have all openings on intersecting center lines. h Body thickness at no point shall be less than 87} percent of the dimensions given in the table.