ASME B16.24-2006 pdf free download.Cast Copper Alloy Pipe Flanges and Flanged Fittings Classes 150, 300, 600, 900, 1500, and 2500
6.1.2 ASTM B 148. For castings made of ASTM B 148 alloy C95200, the flange dimensions shall be in accordance with the dimensional requirements of ASME B16.5.
6.2 End-Flange Facings Unless otherwise specified by the purchaser, Classes 150 and 300 blind and companion flanges shall be furnished with a flat face. Unless otherwise specified by thepurchaser, Classes 600 andhigher companionflanges shall be furnished with a 7-mm (0.25-in.) raised face, with the exception of the small male face (on end of pipe) and the small female face (on end of pipe). When using straight pipe threads, any of the flange pipe threads shown in ASME B16.5 may be used with copper alloy flanges. When flanges of ASTM B 61 or B 62 are furnished with one of the alternative ASME B16.5 fac- ings, any required raised-face dimension shall be in addition to the basic flange thickness C of Tables 2 and 4 (Tables I-2 and I-4).
6.3 Threaded Flanges Threaded flanges shall have a taper pipe thread in accordance with ASME B1.20.1. Variations in alignment of the thread with the axis of the flange shall not exceed 5 mm/m (0.06 in./ft) (0.5%).
6.4 Thread Chamfer All flanges of ASTM B 61 and B 62 materials shall be made without a counterbore. The threads shall be chamfered approximately to the major diameter of the thread at the pipe end of the flange at an angle approxi- mately 45 deg with the axis of the thread. The chamfer shall be concentric with the thread and shall be included in the measurement of the thread length.
6.5 Thread Length The length of the thread shall include the chamfer.
6.6 Thread Gaging The gaging notch of the thread gage shall come flush with the bottom of the chamfer in all threaded flanges, and shall be considered the intersection of the chamfer cone and the pitch cone of the thread. This depth of chamfer is approximately equal to one-half the pitch of the thread. The maximum allowable thread variation is one turn large or small from the gaging notch.
6.7 Threaded Flange Assembly External pipe threads used with higher pressure flanges shall be longer than normal to bring the end of the pipe close to the face of the flange when parts are assembled by power equipment. The additional length and number of turns are shown in Annex A of ASME B16.5 for ASME B1.20.1 threads.
6.8 Flanged Bolt Holes Bolt holes are in multiples of four. Bolt holes shall be equally spaced and pairs of bolt holes shall straddle fitting or valve centerlines.
6.9 Spot and Back Facing Flanges and flanged fittings covered by this Standard shallhave bearingsurfaces forboltingthatshallbe parallel to the flange face within 1 deg. Any spot or back facing shall not reduce the flange thickness C below the dimension required by para. 6.1. The spot facing diameter shall be in accordance with MSS-SP-9. When cutting into the hub of flanges or flanged fittings with back facing tools, the intersection shall have a radius of not less than 1.5 mm (0.06 in.).
7 FITTING DIMENSIONS
7.1 Center-to-Face Dimensions
7.1.1 Side Outlet Fittings. Side outlet elbows and side outlet tees shall have all openings on intersecting centerlines. 7.1.2 Elbows (a) The center-to-face dimensions for straight size 90-deg elbows, 90-deg–long radius elbows, 45-deg elbows, and side outlet 90-deg elbows are shown in Tables 3 and 5 (Tables I-3 and I-5). (b) Reducing 90-deg elbows and reducing side outlet 90-deg elbows shall have the same center-to-face dimen- sions as straight size fittings shown in Tables 3 and 5 (Tables I-3 and I-5), corresponding to the size of the largest opening. (c) Special degree elbows ranging from 1 deg to 45 deg, inclusively, shall have the same center-to-face dimensions given for 45-deg elbows and those over 45 deg and up to 90 deg, inclusively, shall have the same center-to-face dimensions 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.ASME B16.24 pdf download.ASME B16.24-2006 pdf free download
