Dimensions Orifice Weld Neck RF flanges ASME B16.36 Class 600

Weld Neck Orifice flange Raised Face type

OTHER PRESSURE CLASSES

300
600
900
NPS DIA
RF
OUT
SIDE
DIA
MIN
THK
FLG
HGT
FLG
HUB
DIA
HUB
DIA
DIA OF
TAB
R O T H X A Tg
1 50.8 125 36.6 81 54 33.5 6.4
1.1/2 73.0 155 36.6 84 70 48.3 6.4
2 92.1 165 36.6 84 84 60.3 6.4
2.1/2 104.8 190 36.6 87 100 73.0 6.4
3 127.0 210 36.6 87 117 88.9 9.5
4 157.2 275 38.1 102 152 114.3 12.7
6 215.9 355 47.7 117 222 168.3 12.7
8 269.9 420 55.6 133 273 219.1 12.7
10 323.8 510 63.5 152 343 273.0 12.7
12 381.0 560 66.7 156 400 323.8 12.7
14 412.8 605 69.9 165 432 355.6 12.7
16 469.9 685 76.2 178 495 406.4 12.7
18 533.4 745 82.6 184 546 457.2 12.7
20 584.2 815 88.9 190 610 508.0 12.7
24 692.2 940 101.6 203 718 609.6 12.7

Weld Neck Orifice flange
NPS BOLT
CIRCLE
NO OF
BOLTS
DIA OF
HOLES
DIA
STUD
BOLTS
STUD
BOLT
LENGTH
1 88.9 4 11/16 5/8 125
1.1/2 114.3 4 13/16 3/4 135
2 127.0 8 11/16 5/8 125
2.1/2 149.2 8 13/16 3/4 135
3 168.3 8 13/16 3/4 135
4 215.9 8 1 7/8 150
6 292.1 12 1.1/8 1 180
8 349.2 12 1.1/4 1.1/8 195
10 431.8 16 1.3/8 1.1/4 220
12 489.0 20 1.3/8 1.1/4 230
14 527.0 20 1.1/2 1.3/8 240
16 603.2 20 1.5/8 1.1/2 260
18 654.0 20 1.3/4 1.5/8 280
20 723.9 24 1.3/4 1.5/8 300
24 838.2 24 2 1.7/8 335

General Notes..

  • Dimensions are in millimeters, except for bolts and bolt holes.
  • Height of Raised Face (RF) in CLASS 600 is 2 mm at NPS 1 - NPS 3, and 7 mm at NPS 4 - NPS 24.
  • Weld neck flanges NPS 3 and smaller are identical to Class 300 flanges except for bolting
    and may be used for such service.
  • All other dimensions are in accordance with ASME B16.5.
  • Ring joint flange in NPS 24 will require an angular meter tap.

Notes..

  • Other NPT sizes may be furnished if required.
  • Bolt lengths for raised face flanges include allowance for orifice and gasket thickness
    of 6 mm (0.25 in.) for NPS 1 to NPS 12. Bolt lengths for ring-type joint flanges include
    allowance of 15 mm (0.62 in.) for NPS 1 to NPS 3.
  • Bore (B) is to be specified by the purchaser.
  • The length of the Stud Bolt does not include the height of the chamfers (points).
  • The length of the Stud Bolts includes one Spiral Wound Gasket with a 4.5mm thick sealing element, which is compressed to 3mm while tightening the Raised Face flange connection.

Tolerances
Tolerances on all dimensions shall be as shown in ASME B16.5 except for those shown below.

Pressure Tap Location
Tolerance on location of center of pressure tap hole from flange face shall be..

  • ±0.5 mm (±0.02 in.) for flanges smaller than NPS 4
  • ±0.8 mm (±0.03 in.) for flanges NPS 4 and larger

Bore Diameter

  • Bore diameter tolerance (Welding Neck flanges only) is ±0.5% of nominal value.


Studs are measured parallel to the axis (L) from the first to the thread without the chamfers (points). S = free threads equals 1/3 time bolt dia

Measuring lengths of Stud Bolts

 

Hex bolts are measured from under the head to the top of de bolt


Measuring lengths of Hex bolts




Explore the World of Piping


© Werner Sölken 2008 -  
All rights reserved.
www.wermac.org uses Google Analytics

Privacy Policy

I must be old. I still believe in respect.