Blind Flange Dimensions Chart
Blind flanges play an indispensable role in the realm of piping systems. Their primary function is to offer a robust and dependable sealing solution at the terminal points of pipelines or for securely closing openings in piping systems and vessels.
What sets blind flanges apart from other flange varieties is their distinctive design; they lack a central bore, making them solid discs. This unique attribute is key to their functionality and application. We offer these specifications and classes of blind flanges, including:
CLASS 1500# BLIND FLANGE ANSI B16.50
| SIZE | OD | Thickness | Weight |
|---|
| 1/2″ | 4-3/4″ | 7/8″ | 4 | SHOP NOW |
| 3/4″ | 5-1/8″ | 1″ | 6 | SHOP NOW |
| 1″ | 5-7/8″ | 1-1/8″ | 9 | SHOP NOW |
| 1-1/4″ | 6-1/4″ | 1-1/8″ | 10 | SHOP NOW |
| 1-1/2″ | 7″ | 1-1/4″ | 14 | SHOP NOW |
| 2″ | 8-1/2″ | 1-1/2″ | 25 | SHOP NOW |
| 2-1/2″ | 9-5/8″ | 1-5/8″ | 35 | SHOP NOW |
| 3″ | 10-1/2″ | 1-7/8″ | 48 | SHOP NOW |
| 3-1/2″ | SHOP NOW | |||
| 4″ | 12-1/4″ | 2-1/8″ | 73 | SHOP NOW |
| 5″ | 14-3/4″ | 2-7/8″ | 140 | SHOP NOW |
| 6″ | 15-1/2″ | 3-1/4″ | 160 | SHOP NOW |
| 8″ | 19″ | 3-5/8″ | 302 | SHOP NOW |
| 10″ | 23″ | 4-1/4″ | 510 | SHOP NOW |
| 12″ | 26-1/2″ | 4-7/8″ | 775 | SHOP NOW |
| 14″ | 29-1/2″ | 5-1/4″ | 975 | SHOP NOW |
| 16″ | 32-1/2″ | 5-3/4″ | 1300 | SHOP NOW |
| 18″ | 36″ | 6-3/8″ | 1750 | SHOP NOW |
| 20″ | 38-3/4″ | 7″ | 2225 | SHOP NOW |
| 22″ | SHOP NOW | |||
| 24″ | 46″ | 8″ | 3625 | SHOP NOW |
CLASS 2500# BLIND FLANGE ANSI B16.50
| SIZE | OD | Thickness | Weight |
|---|
| 1/2″ | 5-1/4″ | 1-3/16″ | 7 | SHOP NOW |
| 3/4″ | 5-1/2″ | 1-1/4″ | 10 | SHOP NOW |
| 1″ | 6-1/4″ | 1-3/8″ | 12 | SHOP NOW |
| 1-1/4″ | 7-1/4″ | 1-1/2″ | 18 | SHOP NOW |
| 1-1/2″ | 8″ | 1-3/4″ | 25 | SHOP NOW |
| 2″ | 9-1/4″ | 2″ | 39 | SHOP NOW |
| 2-1/2″ | 10-1/2″ | 2-1/4″ | 56 | SHOP NOW |
| 3″ | 12″ | 2-5/8″ | 86 | SHOP NOW |
| 3-1/2″ | SHOP NOW | |||
| 4″ | 14″ | 3″ | 133 | SHOP NOW |
| 5″ | 16-1/2″ | 3-5/8″ | 223 | SHOP NOW |
| 6″ | 19″ | 4-1/4″ | 345 | SHOP NOW |
| 8″ | 21-3/4″ | 5″ | 533 | SHOP NOW |
| 10″ | 26-1/2″ | 6-1/2″ | 1025 | SHOP NOW |
| 12″ | 30″ | 7-1/4″ | 1464 | SHOP NOW |
Need additional configurations or ordering options?
Explore the full Blind Flange product range BROWSE OUR INVENTORYThe Blind Flange Dimensions Chart is used to identify the correct and precise measurement size (diameter), thickness, and pressure rating of a blind flange for testing pipe pressure. This is to create an access point in a piping system, to temporarily seal a piping system while modifying or repairing the line, or to create a long-term seal to terminate a piping system. The chart also provides bolt pattern information, necessary for safely sealing pipeline ends, pressure valves and vessels.
The chart applies to the blind flanges product family manufactured to ASME B16.5 and ASME B16.47, or customer-specified requirements. BLind flange charts typically apply to the steel or carbon pipe flanges and flanged fittings product family, covering products designed for terminating or sealing the end of a piping system, valve or pressure valve.
Blind flange charts are primarily intended to be used by piping engineers, maintenance planners and technicians, procurement teams and specialists, field personnel and pipefitters responsible for specifying or installing blind flanges. It helps users select the correct configuration for industrial piping, vessels, and fluid control applications through OD, pitch circle diameter (bolt circle), size and count of solid plates. These charts are crucial for oil and gas, chemical processing and water treatment facilities. If you're looking for blind flange dimensions, check out our detailed charts to find the right size, material and dimensions. Looking for more info? Check out our resources page here.