Document dn0gkEzp4roBMrdqB7BX05NVR

684 CHAPTER 26 1958'Guide Table 9. Dimensions op Flanged Cast-Iron Elbows, Double Branch Elbows, Tees, Crosses, Laterals, True Y's (Straight Sizes), and Reducers (Class 125) h- b-H 90* ELBOW 90* LONG RADIUS ELBOW SIDE OUTLET ELBOW H-A-H DOUBLE BRANCH ELBOW |3f SIDE OUTLET TEE OR CROSS l3f TRUE*r* Nom inal Pipe Size Inside Diam OF Fit tings Centeb to Face 90 Deo Elbow Tees, Cbosses TrueY and Double Branch Elbow A Center to Face 90 Dbo Long Radius Elbow B Centeb to Face 45 Deo Elbow C Cen ter to Face Lat eral Short Center to Face True Y and Lateral DE Face TO Face Re duces Thick Diam ness of of Flange Flange Wall Thick- F (Min) 1 1M 1M 2 m 3 3*4 4 5 6 8 10 12 HOD 16 OD 18 OD 20 OD 24 OD 30 OD 36 OD 42 OD 48 OD 1 1H Hi 2 m 3 3*4 4 56 8 10 12 14 16 18 20 24 30 36 42 48 m 3*4 4 4*4 5 5*4 6 m 7*4 8 9 11 12 14 15 16*4 18 22 25 28* 31* 34* ' 5m 5*4 2 6 2*4 6*4 2*4 73 7*4 m 9 - 10*4 11*4 3 m \4 4*4 5., 14 . . 16*4 19 21*4 24 - 6M Hi Hi 8 2m 29 34 41*4 56*4 64 ' 8*4 9*4 11 15 18 21 24 5*4 6*4 7 8 9*4 10 11*4 12 13*4 14*4 17*4 20*4 24*4 27 30 32 35 40*4 49 1*4 m 2 2*4 2*4 3 3 3 3*4 3*4 4*4 5 5*4 6 6*4 7 8 9 . 10 y 5*4 6 6*4 7 8 9 11 12 14 16 18 19 20 24 30 42 48 4*4 4*4' 5 6 7 7*4 8*4 9 10 11 13*4 16 19 21 23*4 25 2714 32 38*4 46 53 59*4 Mb H Mb M `Mb M Mb `Mb `Mb 1 1*4 iff* 1*4 1*4 Iff* Iff* l*f* 154 2*4 2*4 2*4 2*4 Ms Mb Mb Mb Mb H Mb a M Hu H 1 i yit m 1*4 me 1H im : ;rT.------ lor v'"* 11011 PlP Flanges and Flanged Fittings, Class 125, ASA B16.1-1948. Ail dimensions given are in inches. Does not apply to true Y's or double-flanged elbows. higher pressures. They include: male and female face (an insert type face), tongue-and-groove (an adaptation of the male and female type), lapped pipe to flange, lapped pipe to pipe, and ring and groove using neck flanges. As it is too expensive to machine flange faces sufficiently to provide water- Pipe, Fittings, Welding 685 tight joints, a gasket is usually inserted between the contact faces of the flanges. The flange bolts then draw .the faces up so tight that the gasket deforms into the face imperfections and thereby, provides a tight joint. Gaskets are made of numerous materials, such -as cork, papier, fiber, asbestos, metal (iron, steel, copper, etc.), and combinations of metal and some soft material. The proper gasket material to use depends upon the service of the pipe. The material should not be detrimentally affected by the chemical and thermal conditions of the fluid being carried. Table 10. Dimensions of Steel Butt-Welding Fittings Long Radius Elbows 180-Deg Returns Straight Tees Nominal Pipe Size Outside Diameter 'at Bevel Center-to-End 90 Deg 45-Deg Elbows Elbows AB Outside Center- Diameter to-Center at Bevel O Back to Outside Face Diameter K at Bevel Center-to-End - Run C Outlet M 1 1.315 1*4 *4 1.315 3 2Mb 1.315 1H 1.660 ' 1*4 1 1.660 3 2*4 1.660 1M 1.900 2M Hi 1.900 4M 3K 1.900 2 2.375 -3 - 1*4 2.375 6 4Mb 2.375 m 2.875 3*4 1*4 2.875 m 5*i 2.875 3 3.500 4*4 2 3.500 9 6M 3.500 3*4 4.000 5*4 2M 4.000 10*4 7H 4.000 4 4.500 6 2*4 4.500 12 8H 4.500 5 6 8 10 12 5.563 6.625 8.625 10.750 12.750 ?ti 9 12 15 18 . 3*4 5.563 15 3*4 6.625 18 5 8.625 24 6*4 10.750 30 7*4 12.750 36 10*f# 12*1* 16*f# 20*4 24?i 5.563 6.625 8.625 10.750 12.750 14 16 18 14.000 16.000 18.000 21 24 27 8*4 14.000 42 10 16.000 48 11*4 18.000 54 28 32 36 14.000 16.000 18.000 20.000 30 12*4 20.000 60 f 40 20.000 24.000 36 15 24.000 72 48 24.000 From American Standard for Steel Butt-Welding Fittings, ASA B16.9-1951. Ail dimensions are in inches. Dimension A is equal to M of dimension O. Hi Hi 2*4' 2M 3 35i 3M 4*i m 5*4 7 8H 10 11 12 13*4 15 17 18 2M m 2 3H 3M m m 6*4 7 8*4 10 Not stand- ard VALVES Valves are made with the same end connections as fittings. A brief description of each type follows. 1. Flanged Ends: Mads in sizes from in. up. Used whenever line fittings are flanged and if frequent removal is contemplated. Flanged valves facilitate installstion when large sizes are used. 2. Screwed Ends: Most common type end. _ Can be used for all pressures: Usually confined to smaller size because of difficulty in making large screwed joints. t Welding Ends: Available in steel only. Generally employed for high tempera ture--high pressure work. Difficult to disassemble in a welded line. Ihis type in-