This reference page covers the listed dimensions, weight, stud bolt information, and CAD resource for a Blind Flange 24 Inch Class 300. Use the dimensional data as a drafting and purchasing reference, then verify the complete connection against the project specification before fabrication or installation.
A blind flange has no center opening, so its primary function is to close a piping, equipment, or nozzle connection. The flange can provide a removable closure for isolation, maintenance access, inspection activities, or a future piping extension.
Blind Flange 24″ Class 300
Blind Flange 24″ Class 300 is used to seal the end of a piping system or close off a flange connection in Class 300 service. It is a solid flange without a center bore and is commonly used in industrial piping systems, maintenance isolation points, and future pipeline expansion connections where a higher pressure rating is required.
This dimension data is based on ANSI / ASME B16.5-2020.
Blind Flange 24″ Class 300 Dimensions
- Reference Standard: ANSI / ASME B16.5
- Nominal Pipe Size (NPS): 24″
- DN Size: DN600
- Flange Thickness: 68.3mm
- Weight: 359kg
- Stud Bolt Size: 1 1/2″ UNC (or M39) x 230 Long
- Number of Bolts: 24
- Hole Diameter: 1 5/8″ (41.275mm)
What Is a Blind Flange?
A blind flange is a blank flange used to close the end of a pipeline, vessel nozzle, or equipment connection. It provides a secure shutoff point and is often selected when future maintenance, inspection, or line extension may be required.
Common Applications
Blind Flange 24″ Class 300 is commonly used for:
- Pipe end closure
- Equipment isolation
- Valve and nozzle blanking
- Maintenance shutdown work
- Process and utility piping systems
- Higher pressure piping applications
CAD Drawing Download
This page includes the CAD drawing file for Blind Flange 24″ Class 300, which can be used for drafting, detailing, and piping layout coordination.
Available Blind Flange Class 300 Sizes
This size is part of the Blind Flange Class 300 series. Check other sizes in the same category to find matching dimension data and CAD files for your project.
Notes
Before fabrication or installation, always confirm the latest project requirements, flange material specification, gasket type, bolt length, and applicable pressure-temperature rating.
How to Use This Blind Flange Reference
The source data separates the flange information into several practical categories. Nominal pipe size identifies the intended piping size designation, while the flange thickness and weight support layout, handling, and material-estimating work. The bolt size, bolt quantity, and hole diameter are connection details that should be coordinated with the mating flange, gasket, washers, and bolting specification.
Do not treat the pressure class designation as a standalone allowable working pressure. The applicable pressure-temperature rating depends on the governing standard, flange material, temperature, gasketed joint, bolting, and project requirements. Confirm those conditions before approving the flange for service.
Drafting and CAD Coordination
The downloadable DWG can support piping layouts, equipment-interface drawings, fabrication details, and model coordination. Check the drawing units, insertion scale, flange facing details, and connection orientation before using the file in a production drawing. The CAD file should be coordinated with the approved dimensional data and the project’s flange-face and gasket requirements.
Related Piping References
For broader design research, connect this page with resources covering blind flange dimensions, flange bolt sizing, gasket selection, ASME B16.5 flange terminology, pipe schedules, and CAD/DWG piping details. A related-size index for the Blind Flange Class 300 series can also help readers compare available nominal sizes without confusing one size with another.
Installation and Verification Checklist
- Confirm the flange size and class match the mating component.
- Verify the flange material and pressure-temperature requirements.
- Check the gasket type, facing compatibility, and sealing surface condition.
- Confirm the listed bolting arrangement against the approved project specification.
- Review bolt engagement, washer requirements, tightening procedure, and access for installation.
- Coordinate the flange and CAD geometry with the final piping or equipment layout.
Blind Flange 24 Inch Class 300 FAQ
What is a blind flange used for?
A blind flange closes the end of a pipe, vessel nozzle, valve connection, or other flanged opening. Because it is removable, it can support isolation, maintenance, inspection, or future connection work.
Does this flange have a center bore?
No. A blind flange is a solid flange without a center bore. Its outside and connection details still need to match the mating flange and the approved piping design.
Can the listed bolt information be used for procurement?
Use the listed bolt information as a reference, but confirm the final bolting specification, material, length, washers, thread requirements, and tightening procedure with the project documents and mating flange.
Is the Class 300 designation enough to determine allowable pressure?
No. Allowable pressure depends on material, temperature, the governing rating requirements, gasketed-joint conditions, bolting, and other project constraints. Verify the complete pressure-temperature rating before service.
What should be checked before using the DWG file?
Check drawing units, scale, orientation, flange-face details, connection dimensions, and compatibility with the approved project model or fabrication drawing. The DWG should be treated as a coordination aid and verified against the source dimensions.