ASME B16.24:2001 pdf free download

ASME B16.24:2001 pdf free download.CAST COPPER ALLOY PIPEFLANGES AND FLANGED FITTINGS: CLASSE8 150,300, 400, BO0, 900,1500,AND 2500.
6 FLANGE DIMENSIONS
6.1 General
Flange dimensions are dependent upon (he flange casting material.
6.1.1 Alloys C83600 and C92200. mc flange dimensions shall bc in accordance with Tables 3 and 5 with alternative facings as permitted in para, 6.2.
6.1.2 Alloy C95200. The flange dimensions shall be in accordance with (he dimensional requirements of
ASMI H 16.5.
6.2 End Flange Facings
Class 150 and 300 blind and companion flanges arc regularly furnished with a fiat face. Class 4(X) and higher companion flatiges are regularly furnished with a 0.25 in. raised face, with the excepion of the small male face (on end of pipe) aixi the small female face (on end of pipe). When using straight pipe threads. any of the flange pipe threads shown in ASMF, Bl6.5 may he used with copper alloy flanges. When flanges of alloy C83600 or alloy C92200 arc furnished with one of the alternative ASME B 16.5 facings, any required raised face dimension shall be in addition to the basic flange thickness C of Tables 3 and 5.
6.3 Threaded Flanges
Threaded flanges shall have a taper pipe thread in accordance with ASME B 1.20. I. Variations in alignment of the thread with the axis of the flange shall not exceed 0.()6 inift.
6.4 Thread Chamfer
All flanges of alloy C83600 and C9220O shall be made without a countert,ore. The threads shall be chamfered approximately to the major diameter of the thread at the pipe end of the flange at an angle approximately 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 pich cone of the thread. This depth of chamtr is approximately equal to one-half the pitch of the thread. The maximuni allowable thread variation is one turn large or small from the gaging notch.
6.7 Threaded Flange Assembly
External pipe threads used %ith higher pressure flanges must 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 816.5 for ASMF. 81.20.1 threads.
6.8 Integral Flanges
When flanges are integral with fittings or valves. pairs of bolt holes shall straddle the center line.
6.9 Spot and Back Facing
Flanges and flanged fittings covered by this Standard shall have bearing surtaces for bohing that shall be parallel to the flange face within I 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 0.06 in.