TEMPLATES FOR DRILLING FLANGES

Flange diameters and drilling templates of 150-lb bronze flanges are the sames as the 125 lb. USA Cast-Iron Standard (B16.1). Flanges diameters and drilling templates of 250-lb and 300-lb. Bronze flanges are the sames as the 250-lb. USA Cast-Iron Flange Standard (B16.5) The faces of these flanges are machined with a serrated spiral finish. When cast iron or steel flanges with raised faces are bolted to these flanges, the raised faces should be removed. Full face gaskets should be used. Metallic Gaskets should not be used.

 

150 POUND FLANGES

Nominal Size of Pipe Inches A Outside Diameter of Flange Inches B Minimum Thickness of Flange Inches C Diameter of Bolt Circle Inches Diameter of Drilled Bolt Holes Inches Diameter of Bolts Inches Length of Bolts Inches Number of Bolts
1/2 3 1/2 1/16 2 1/8 5/8 1/2 1 1/4 4
3/4 3 7/8 11/32 2 3/4 5/8 1/2 1 1/2 4
1 4 1/4 3/8 3 1/8 5/8 1/2 1 1/2 4
1 1/4 4 3/8 13/32 3 1/2 5/8 1/2 1 1/2 4
1 1/2 5 7/16 3 7/8 5/8 1/2 1 1/2 4
2 6 1/2 4 3/4 3/4 1/8 1 3/4 4
2 1/2 7 9/16 5 1/2 3/4 1/8 2 4
3 7 1/2 5/8 6 3/4 1/8 2 4
3 1/2 8 1/2 11/16 7 3/4 5/8 2 1/4 8
4 9 11/16 7 1/2 3/4 5/8 2 1/4 8
5 10 3/4 8 1/2 ?/8 3/4 2 1/2 8
6 11 13/16 9 1/2 ?/8 3/4 2 1/2 8
8 13 1/2 15/16 11 3/4 ?/8 3/4 2 1/4 8
10 16 1 14 1/4 1 7/8 3 1/4 12
12 19 1 1/16 17 1 7/8 3 1/4 12

250 POUND FLANGES

Nominal Size of Pipe Inches A Outside Diameter of Flange Inches B Minimum Thickness of Flange Inches C Diameter of Bolt Circle Inches Diameter of Drilled Bolt Holes Inches Diameter of Bolts Inches Length of Bolts Inches Number of Bolts
1/2 3 3/4 13/32 2 3/8 5/8 1/2 1 1/2 4
3/4 4 1/8 7/16 3 1/4 3/4 3/8 1 3/4 4
1 4 7/8 1/2 3 1/2 3/4 3/8 1 3/4 4
1 1/4 5 1/4 17/32 3 7/8 3/4 3/8 2 4
1 1/2 6 1/8 9/16 4 1/2 7/8 3/4 2 4
2 6 1/2 5/8 5 3/4 3/8 2 8
2 1/2 7 1/2 11/14 5 7/8 7/8 3/4 2 1/4 8
3 8 1/4 7/8 6 5/8 7/8 3/4 2 1/2 8
3 1/2 9 13/16 7 1/4 7/8 3/4 2 1/2 8
4 10 7/8 7 7/8 7/8 3/4 2 1/4 8
5 11 13/16 9 1/4 7/8 3/4 2 1/4 8
6 12 1/2 1 10 3/8 7/8 3/4 3 12
8 15 1 1/8 13 1 3/8 3 1/4 12
10 17 1/2 1 3/16 15 1/4 1 1/8 1 3 3/4 16
12 20 1/2 1 1/4 17 3/4 1 1/4 1 1/8 3 3/4 16

300 POUND FLANGES

Nominal Size of Pipe Inches A Outside Diameter of Flange Inches B Minimum Thickness of Flange Inches C Diameter of Bolt Circle Inches Diameter of Drilled Bolt Holes Inches Diameter of Bolts Inches Length of Bolts Inches Number of Bolts
1/2 3 3/4 1/2 2 5/8 3/8 1/2 1 3/4 4
3/4 4 3/8 17/32 3 1/4 3/4 3/8 2 4
1 4 7/8 19/32 3 1/2 3/4 3/8 2 4
1 1/4 5 1/4 5/8 3 7/8 3/4 3/8 2 4
1 1/2 6 1/8 11/16 4 1/2 7/8 3/4 2 1/4 4
2 6 1/2 3/4 5 3/4 3/8 2 1/4 8
2 1/2 7 1/2 13/16 5 7/8 7/8 3/4 2 1/2 8
3 8 1/4 29/32 6 5/8 7/8 3/4 2 3/4 8
3 1/2 9 31/32 7 1/4 7/8 3/4 3 8
4 10 1 1/16 7 7/8 7/8 3/4 3 8
5 11 1 1/8 9 1/4 7/8 3/4 3 1/4 8
6 12 1/2 1 3/16 10 5/8 7/8 3/4 3 1/4 12
8 15 1 3/8 13 1 3/8 3 1/4 12


Email: info@GilmourSupply.com

Brooklyn, NY: (718) 832-7900 •

Farmingdale, NY: (631) 694-2800

 •

Mt. Vernon, NY: (914) 662-2900


Gilmour Supply Co. is a member of The Davidson Group of companies.
Davidson Pipe Supply · Specialty Pipe & Tube · T&A Valve Industries · Monotube · Gilmour Supply

The Gilmour Supply Co. provides a wide range of plumbing pipe and supplies in the NY, NJ and CT tri-state area. Plumbing supplies for commercial plumbers, contractors, maintenance and MRO. Copper tube and pipe, steel pipe, valves and fittings of all types. Butterfly valves, unions, ball valves, from pipe and valve manufacturers such as Victaulic, Nibco, Slant Fin and Smith Boilers.

Contents Copyright© 1998-2008 Gilmour Supply Co. All rights reserved.