Standard Flange Facings : ASME B16.5
STANDARD FACINGS
For Class 150, 300, 400, 600, 900, 1500 and 2500 Flanges
| Outside Diameter3 |
| Outside Diameter3 |
| Height |
|---|
| Raised Face,Lap Joint,Large Male & Large Tongue5 | Small Male4,5 | Small Tongue5 | I.D. of Large & Small Tongue3,5 | Large Female & Large Groove5 | Small Female4,5 | Small Groove5 | I.D. of Large & Small Groove3,5 | Raised Size 150 & 300-Pound Standards3 | Raised Face,Large & Small Male &Tongue 400, 600, 900, 1500 & 2500 Pound Standards2 | Depth of Groove or Female |
|---|
| Nominal Pipe Size | R | S | T | U | W | X | Y | Z |
|
|
|
|---|
| 1/2 | 1-3/8 | 22/32 | 1-3/8 | 1 | 1-7/16 | 25/32 | 1-7/16 | 15/16 | 1/16 | 1/4 | 3/16 |
| 3/4 | 1-11/16 | 15/16 | 1-11/16 | 1-5/16 | 1-3/4 | 1 | 1-3/4 | 1-1/4 | 1/16 | 1/4 | 3/16 |
| 1 | 2 | 1-3/16 | 1-7/8 | 1-1/2 | 2-1/16 | 1-1/4 | 1-15/16 | 1-7/16 | 1/16 | 1/4 | 3/16 |
| 1-1/4 | 2-1/2 | 1-1/2 | 2-1/4 | 1-7/8 | 2-9/16 | 1-9/16 | 2-5/16 | 1-13/16 | 1/16 | 1/4 | 3/16 |
| 1-1/2 | 2-7/8 | 1-3/4 | 2-1/2 | 2-1/8 | 2-15/16 | 1-13/16 | 2-9/16 | 2-1/16 | 1/16 | 1/4 | 3/16 |
| 2 | 3-5/8 | 2-1/4 | 3-1/4 | 2-7/8 | 3-11/16 | 2-5/16 | 3-5/16 | 2-13/16 | 1/16 | 1/4 | 3/16 |
| 2-1/2 | 4-1/8 | 2-11/16 | 3-3/4 | 3-3/8 | 4-3/16 | 2-3/4 | 3-13/16 | 3-5/16 | 1/16 | 1/4 | 3/16 |
| 3 | 5 | 3-5/16 | 4-5/8 | 4-1/4 | 5-1/16 | 3-3/8 | 4-11/16 | 4-3/16 | 1/16 | 1/4 | 3/16 |
| 3-1/2 | 5-1/2 | 3-13/16 | 5-1/8 | 4-3/4 | 5-9/16 | 3-7/8 | 5-3/16 | 4-11/16 | 1/16 | 1/4 | 3/16 |
| 4 | 6-3/16 | 4-5/16 | 5-11/16 | 5-3/16 | 6-1/4 | 4-3/8 | 5-3/4 | 5-1/8 | 1/16 | 1/4 | 3/16 |
| 5 | 7-5/16 | 5-3/8 | 6-13/16 | 6-5/16 | 7-3/8 | 5-7/16 | 6-7/8 | 6-1/4 | 1/16 | 1/4 | 3/16 |
| 6 | 8-1/2 | 6-3/8 | 8 | 7-1/2 | 8-9/16 | 6-7/16 | 8-1/16 | 7-7/16 | 1/16 | 1/4 | 3/16 |
| 8 | 10-5/8 | 8-3/8 | 10 | 9-3/8 | 10-11/16 | 8-7/16 | 10-1/16 | 9-5/16 | 1/16 | 1/4 | 3/16 |
| 10 | 12-3/4 | 10-1/2 | 12 | 11-1/4 | 12-13/16 | 10-9/16 | 12-1/16 | 11-3/16 | 1/16 | 1/4 | 3/16 |
| 12 | 15 | 12-1/2 | 14-1/4 | 13-1/2 | 15-1/16 | 12-9/16 | 14-5/16 | 13-7/16 | 1/16 | 1/4 | 3/16 |
| 14 | 16-1/4 | 13-3/4 | 15-1/2 | 14-3/4 | 16-5/16 | 13-13/16 | 15-9/16 | 14-11/16 | 1/16 | 1/4 | 3/16 |
| 16 | 18-1/2 | 15-3/4 | 17-5/8 | 16-3/4 | 18-9/16 | 15-13/16 | 17-11/16 | 16-11/16 | 1/16 | 1/4 | 3/16 |
| 18 | 21 | 17-3/4 | 20-1/8 | 19-1/4 | 21-1/16 | 17-13/16 | 20-3/16 | 19-3/16 | 1/16 | 1/4 | 3/16 |
| 20 | 23 | 19-3/4 | 22 | 21 | 23-1/16 | 19-13/16 | 22-1/16 | 20-15/16 | 1/16 | 1/4 | 3/16 |
| 24 | 27-1/4 | 23-3/4 | 26-1/4 | 25-1/4 | 27-5/16 | 23-13/16 | 26-5/16 | 25-3/16 | 1/16 | 1/4 | 3/16 |
- Regular facing for 150 and 300 Lb. steel flanged fittings and flange standards is a 1/16 inch raised face included in the minimum flange thickness. A 1/16 inch raised face is also permitted on the 400, 600, 900, 1500 and 2500 Lb. flange standards, but it must be added to the minimum flange thickness.
- Regular facing for 400, 600, 900, 1500 and 2500 Lb. flange standards is a 1/4 inch raised face not included in minimum flange thickness dimensions.
- A tolerance of plus or minus 0.016 inch (1/64 inch) is allowed on the inside and outside diameters of all facings.
- Care should be taken in the use of joints of these dimensions, (they apply particularly on lines where the joint is made on the end of pipe) to insure that pipe used is thick enough to permit sufficient bearing surface to prevent crushing the gasket. Threaded companion flanges are furnished with plain face and are threaded with American Standard Locknut Thread.
- Gaskets for male-female and tongue-groove joints shall cover the bottom of the recess with minimum clearances taking into account the tolerances prescribed in Note 3.
All dimensions are in inches.
