Class 1500 Standard Connection Flange
Long Neck Weld Flange Heavy Barrel Flange
Equal Barrel Flange

 

Class 1500 - Standard Connection Specifications
Size Flange Barrel OD Bolting Nut Stud Bolt Weights Length
Nom Bore LWN & E Bore HB OD Thk RF of OD LWN HB E # of Holes Hole Size Bolt Circle Stop Dia Relief Dia Relief Length Size RF Length RTJ Length LWN HB E Base
  B  B O  T R  D D D     C NS NR NL       Base Per  1" Base Per  1" Base Per  1" L 
 1/2 0.50 0.55 4.75 0.88 1.38 1.56 2.00 4.75 4 0.88 3.25 2.00 1.56 1.00 3/4  4 1/4 4 1/4 8 0.5 10 0.8 37 5 9
 3/4 0.75 0.74 5.12 1.00 1.69 1.81 2.25 5.12 4 0.88 3.50 2.25 1.81 1.00 3/4  4 1/2 4 1/2 10 0.6 13 1 42 5.7 9
1 1.00 0.96 5.88 1.12 2.00 2.12 2.56 5.88 4 1.00 4.00 2.56 2.12 1.12 7/8  5    5    13 0.8 17 1.3 54 7.5 9
1 1/4 1.25 1.28 6.25 1.12 2.50 2.50 2.94 6.25 4 1.00 4.38 2.94 2.50 1.12 7/8  5    5    17 1 20 1.6 61 8.3 9
1 1/2 1.50 1.50 7.00 1.25 2.88 2.75 3.25 7.00 4 1.12 4.88 3.25 2.75 1.25 1 5 1/2 5 1/2 21 1.2 26 1.9 77 10 9
2 2.00 1.94 8.50 1.50 3.62 4.12 5.06 8.50 8 1.00 6.50 5.06 4.12 1.12   7/8  5 3/4 5 3/4 42 2.9 56 4.9 115 15 9
2 1/2 2.50 2.32 9.62 1.62 4.12 4.88 5.88 9.62 8 1.12 7.50 5.88 4.88 1.25 1 6 1/4 6 1/4 56 3.9 75 6.5 144 19 9
3 3.00 2.90 10.50 1.88 5.00 5.25 6.19 10.50 8 1.25 8.00 6.19 5.25 1.38 1 1/8  7    7    67 4.1 84 6.7 161 23 9
4 4.00 3.83 12.25 2.12 6.19 6.38 7.50 12.25 8 1.38 9.50 7.50 6.38 1.50 1 1/4  7 3/4 7 3/4 110 5.5 147 9.3 302 30 12
5 5.00 4.81 14.75 2.88 7.31 7.75 9.12 14.75 8 1.62 11.50 9.12 7.75 1.75 1 1/2  9 3/4 9 3/4 181 7.8 233 13 414 43 12
6 6.00 5.76 15.50 3.25 8.50 9.00 10.31 15.50 12 1.50 12.50 10.31 9.00 1.62 1 3/8  10 1/4 10 1/2 215 10 272 16 445 46 12
8 8.00 7.62 19.00 3.62 10.62 11.50 12.94 19.00 12 1.75 15.50 12.94 11.50 1.88 1 5/8  11 1/2 12 3/4 337 15 417 24 629 67 12
10 10.00 9.56 ### 4.25 12.75 14.50 16.06 ### 12 2.00 19.00 16.06 14.50 2.12 1 7/8  13 1/4 13 1/2 546 25 651 37 888 97 12
12 12.00 11.38 ### 4.88 15.00 17.75 19.38 ### 16 2.12 22.50 19.38 17.75 2.25 2 14 3/4 15 1/4 946 38 1148 55 1683 127 16
14 14.00 14.00 ### 5.25 16.25 19.50 21.50 ### 16 2.38 25.00 21.50 19.50 2.50 2 1/4  16    16 3/4 1116 41 1308 59 1929 150 16
16 16.00 16.00 ### 5.75 18.50 21.75 ### ### 16 2.62 27.75 23.88 21.75 2.75 2 1/2  17 1/2 18 1/2 1371 48 1588 70 2238 178 16
18 18.00 18.00 ### 6.38 21.00 23.50 ### ### 16 2.88 30.50 26.25 23.50 3.00 2 3/4  19 1/2 20 3/4 1674 51 1959 81 2629 216 16
20 20.00 20.00 ### 7.00 ### 25.25 28.12 ### 16 3.12 32.75 28.12 25.25 3.25 3 21 1/4 22 1/4 1943 53 2241 87 2868 245 16
24 24.00 24.00 ### 8.00 ### 30.00 ### ### 16 3.62 39.00 33.62 30.00 3.75 3 1/2  24 1/4 25 1/2 2936 72 3334 123 3819 343 16
Dimensions are in inches.  Weights are in pounds.

Class 1500 Standard Connection Flange PDF (for printing).