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Flange Installation Data Sheet

Proper installation of a flange can be made easier with the help of installation data. The following includes important points, a torque sequence chart and a bolt information table.

Important Notes

  1. Recommended Gaskets: full face, 1/8" thick elastomeric, 50-70 Shore A hardness.
  2. Bolt threads should be well lubricated.
  3. Nut and bolt threads should be free running during assembly.
  4. Follow illustrated bolt tightening sequence.
  5. Always use full size flat washers with bolts and nuts.

Torque Sequence Chart

Torque Sequence Chart

 

Bolt Information Table

Size Bolt Circle
Diameter		 Bolts
Required		 Bolt Size
(UNC x Length)		 Torque
½ 2.37 4 ½-13 x1 ¾ 15-20
¾ 2.75 4 ½-13 x 1 15/16 15-20
1 3.12 4 ½-13 x 2 15-20
1¼ 3.50 4 ½-13 x 2 ¼ 15-20
1½ 3.87 4 ½-13 x 2¾ 15-20
2 4.75 4 5/8-11 x 3 20-30
2½ 5.50 4 5/8-11 x 3¼ 20-30
3 6.00 4 5/8-11 x 3 5/8 20-30
4 7.50 8 5/8-11 x 3¾ 20-30
5 8.50 8 ¾-10 x 6-3¾ 25-35
6 9.50 8 ¾-10 x 4 3/8 30-50
8 11.75 8 ¾-10 x 4 3/8 30-50
10 14.25 12 7/8-9 x 4½ 53-75
12 17.00 12 7/8-9 x 4 5/8 53-75

 

Note: UNC=Unified National Course. Mating dimensions and configurations conform to ANSI B 16.5, Class 150 flanges. Socket diameters conform to ASTM D 2467. Working Pressure is 150 psi water at 73.4°F. Use primer and heavy-bodied PVC cement in accordance with ASTM D 2855.