1-1/4" Flange - 150 PSI - Long Weld Neck
| Nominal Size | 1-1/4" |
| Pressure Class | 150 PSI |
| Connection Type | Long Weld Neck |
| Bore | 1.25" |
| Outer Diameter (OD) | 4.62" |
| Flange Thickness | 0.56" |
| Barrel OD | 2.31" |
| Wall Thickness | 0.53" |
| Bolt Circle Diameter | 3.5" |
| Number of Bolt Holes | 4 |
| Bolt Hole Size | 5/8" |
| Ring Groove (RF) Depth | 2.5" |
| Relief Diameter | 2.31" |
| Relief Length | 0.75" |
| RTJ Length | 3.25" |
| Stud Bolt Size | 1/2" |
| Weight (Base @ 9") | 9 lbs |
| Weight per Inch | 0.8 lbs/in |
About This Specification
This page contains dimension and weight data for 1-1/4" ASME B16.5 flanges at 150 PSI pressure class. The Long Weld Neck (LWN) connection type is specified herein.
Data Source: FCI Forged Components Catalog 2020 | ASME B16.5-2020 Standard