Nominal
diameter
d1 (mm) d2 (mm) d3 (mm)
Class 150 Class 300 Class 400 Class 600 Class 900 Class 1500 Class 2500
1/2 23.1 33.3 47.8 54.1 54.1 54.1 63.5 63.5 69.9
3/4 28.7 39.6 57.2 66.8 66.8 66.8 69.9 69.9 76.2
1 36.6 47.5 66.8 73.2 73.2 73.2 79.5 79.5 85.9
1 1/4 44.5 60.2 76.2 82.6 82.6 82.6 88.9 88.9 104.9
1 1/2 52.3 69.9 85.9 95.3 95.3 95.3 95.3 98.6 117.6
2 69.9 88.9 104.9 111.3 111.3 111.3 143 143 146.1
2 1/2 82.6 101.6 124 130.3 130.3 130.3 165.1 165.1 168.4
3 98.3 123.7 136.7 149.4 149.4 149.4 168.4 174.8 196.9
3 1/2 111.1 136.5 158.8 161.9 158.7 158.7 - - -
4 123.7 153.9 174.8 181.1 177.8 193.8 206.5 209.6 235
5 150.9 182.6 196.9 215.9 212.9 241.3 247.7 254 279.4
6 177.8 212.6 222.3 251 247.7 266.7 289.1 282.7 317.5
8 228.6 266.7 279.4 308.1 304.8 320.8 358.9 352.6 387.4
10 282.7 320.8 339.9 362 358.9 400.1 435.1 435.1 476.3
12 339.6 377.7 409.7 422.4 419.1 457.2 498.6 520.7 549.4
14 371.6 409.7 450.9 485.9 482.6 492.3 520.7 577.9 -
16 422.4 466.6 514.4 539.8 536.7 565.2 574.8 641.4 -
18 479.3 530.1 549.4 596.9 593.9 612.9 638.3 704.9 -
20 530.1 580.9 606.6 654.1 647.7 682.8 698.5 755.7 -
22 581 631.8 657.2 701.7 698.5 730.3 - - -
24 631.7 682.5 717.6 774.7 768.4 790.7 838.2 901.7 -