1-1/4" Flange - 400 PSI - Hub Blank
| Nominal Size | 1-1/4" |
| Pressure Class | 400 PSI |
| Connection Type | Hub Blank |
| Bore | 1.28" |
| Outer Diameter (OD) | 5.25" |
| Flange Thickness | 3.75" |
| Barrel OD | 2.81" |
| Wall Thickness | 0.77" |
| Bolt Circle Diameter | 3.88" |
| Number of Bolt Holes | 4 |
| Bolt Hole Size | 3/4" |
| Ring Groove (RF) Depth | 2.5" |
| Relief Diameter | 2.75" |
| Relief Length | 5/8" |
| RTJ Length | 13" |
| Weight (Base @ null") | 1.4 lbs |
| Weight per Inch | 45 lbs/in |
About This Specification
This page contains dimension and weight data for 1-1/4" ASME B16.5 flanges at 400 PSI pressure class. The Hub Blank (HB) connection type is specified herein.
Data Source: FCI Forged Components Catalog 2020 | ASME B16.5-2020 Standard