Nominal pipe size outside diameter o thickness t raised face diameter r. The specified dimensions ensure interchangeability between bolted, clamped and rotable flanges under special conditions. Iso flanges also called large iso have a sexless design and are made from 304l stainless or aluminum. Cs15 the information presented on this sheet is correct at time of publication. The design principles of iso and kf seals are identical. Pn 16 flanges din en 10921 dimensions of pn 16 flanges. Metal industries is a professional steel flanges and forgings manufacturer in india, specialize in manufacturing flanges table, flanges dimensions, flanges standard chart, flanges size chart, steel valve, flanges bolts, steel flanges, steel forgings range of flange and forging types and sizes. Dimensions and tolerances note 1 see page 85 for weld neck welding end dimension and tolerance data. Or, to simplify, just state the actual pipe sizes in order. Iso flanges conform to the vacuum flange standards issued by the international standards organization iso. Flanges are joined by bolting, and sealing is completed with the use of gaskets and other sealing methods, and fixed to the piping system by welding or threading.
Cast iron flanges stud reference chart the number, diameter and length of. Flanges are used on equipment for the nozzles and in piping systems. Long welding neck flanges catalogue hydraulic and offshore. A flange is designed to connect sections of pipe or tube, or to join the pipe or tube to an assembly such as a pressure vessel, valve or pump. Mistakes sometimes occur because cast iron or ductile iron flanged fittings have 250 cast in them indicating a 250 psi pressure rating but the flange dimensions and bolt pattern conform to ansiasme b16. Flanges are standardized according publications from organizations like asme, mss, api and others. The following section is in order by pressure class due to the overlapping dimensions of. For working steam pressure above 100 ibs and upto 150 ibs per sq. The dimensions of flanges in piping systems and also the smaller flanges on equipment are standardized. With regard to their stabilitytemperature property, the material s 1.
Each flange face is counterbored or grooved to receive a metal centering ring with an elastomeric oring around its o. Nominal pipe size nps inches outside diameter of flange incheso. Mss sp44 also covers nps 12 to nps 24 flanges which are equivalent to asme b16. Each flange face is counterbored or grooved to receive a metal centering. Flange flange butterfly valves with pn6, pnio, pn16 or pn25. There are many common flange standards and flanges within the same standard can etiher be flat commonly cast iron, ductile iron or raised face commonly cast steel and stainless steel. These flanges will be furnished with a 116 raised face unless otherwise specified. They share the same underlying principle as the qf kf or nw flange series in that two smoothfaced sexless flanges clamp together with a sealing device between them. Grey cast iron copper alloy cast and forged steel pn 6 120 90 4 m12 14 70 2 16. Outside diameter 12 12 thickness q 1 716 raised face 116.
The standard covers a range of line blanks in nominal sizes dn. The information in these pages was compiled from industry sources which texas flange and fitting supply believe to be reliable. These flange fittings are generally used in vacuum components in the low and medium vacuum range and can be found on a. Additionally, a rotatable bolt ring can be used to fasten an of flange to a nonrotatable flange using bolts.
We provide ansi, api, and awwa pipe flanges in carbon steel, stainless steel, alloys, and chrome steel. Technical data jersey village, texas coastal flange. Below is a reference table for critical flange dimensions to help identify what standard you have. This standard was prepared by the joint standards australiastandards new. Vacuum flanges several vacuum flange standards exist with. Flange tolerance pdf 296kb welding ends pdf 447kb ring joint flanges pdf 146kb print this page email this page. Nominal pipe size outside diameter o thickness t raised face diameter r length thru hub y point of weld a hub diameter x bore b number of holes diameter of. Dimensions in mm for flanges type 21 the outside hub diameter approximately corresponds to the outside pipe diameter. Dimensions weight kg dn nps flange od a mm length thru hub bolt drilling flange thickness d mm bore sow sw b mm raised face diam. Coastal flange stocks import and domestic ansi b16. Texas flange flanges steel flanges industrial pipe flanges. Standard bore will be furnished unless otherwise specified. This standard specifies the flange types and their facings, dimensions. Iso flanges also called large iso have a sexless design and are made from 304l stainless or aluminum the design principles of iso and kf seals are identical.
Texas flange has served the petrochemical, process, and waterworks industries for over 3 decades. Flange dimensions are determined by the pipe size and the pressure class required for the application. Sizes nps 12 through 312 are same as class 600 flanges. All dimensions are in inches these flanges will be furnished with a 116 raised face unless otherwise specified. The six common types of ansi class flanges, including. Plate flanges aremade from castings conforming to astm a351 or a240 plate. Bolted flange design according to asme section viii division 1. Stainless steel flanges, carbon steel forged flanges 15 nb. Ansi class flange types regardless of size or specification, flanges are fundamentally designed to close, cover, connect, or support pipe systems. The design of a flange involves the selection of the gasket material, type, and dimensions, flange facing, bolting, hub proportions, flange width, and flange thickness.
Flange dimensions en10921 introduction british metric standard bs4504 is now obsolete and replaced by en10921 edition 092008 for steel flanges which also incorporates din standard. G mm wn blind sow sw nominal size class 150 flanges to asme b16. For working steam pressure 50 ibs upto 100 ibs per sq. Flange drillings in en10921 are generally the same as bs4504 and din 2501 but en10921 covers a wider range. C o r b 1 a x y 1 weld neck flange r o c blind flange x b 2 o r c y 1 slip on flange. D flange diameter n number of bolt holes hcd hole circle diameter d diameter of bolt holes l1 face to face length l1 face to center length l2 face to center length in order to supply correct valve we want information about dimensions acc to below. Dimensions, sizes and specificafion of din flange din standard flanges. Flanges and fittings stainless steel short weld nipples b a dimensions mm ab isokf flange dn tubing iso part number 304 s. This fastening method allows the of flange to be rotated for ease of component alignment. Stainless steel flanges, carbon steel forged flanges 15 nb to. Ansi standard flange dimensions are designated as 150, 300, 400, 600, 900, 1500, and 2500, in sizes nps 12 through nps 24. Cast iron flanges stud reference chart the number, diameter and length of studs for cast iron flanges class 125 and 250. Flange comparison table standard dimensions mm nb mm name rating od pcd bolts dia. Bs 4504 flanges and bolting, metric series ansi, class 150.
Dimensions n1, n2 and n3 are measured at the intersection of the hub draft angle and the back face of the flange. Class 400600900 series a large diameter flange dimensions. For working steam pressure above 150 ibs and upto 250 ibs per sq. Milwaukeehammond valve reserves the right to change design andor materials without. To order a reducing flange, state the smaller size first, then the. For d1 dimensions see document flange facing according to din en 10921. Flange table ansi bs 10 nominal size 25mm 1 in bs 4504 diameter of flange bolt circle number number of bolts diameter of bolts diameter of holes diameter of raised face height of raised face thickness of flange. Flange dimensions shall be such that the stresses in the flange, calculated in accordance with 27, do not exceed the allowable stresses specified in 28. Equipment such as pressure vessels can also have socalled body flanges. Of flange to a tapped nonrotatable on a pump or gate valve.
437 999 60 1067 539 1402 1172 603 1365 1375 1459 1115 1490 561 158 777 345 1356 1367 325 911 264 486 366 887 220 653 659 791 668 1305 933 1052 241 59 685 958 367 1408 347