This reference covers the dimensional and drafting information for a Blind Flange 2 Inch Class 2500. Use the listed values to review flange details, coordinate piping layouts, and identify the related CAD file before fabrication or installation.
A blind flange has no center bore, so its primary function is closure rather than creating a flow path. For broader comparison work, related references on blind flange dimensions, flange terminology, and pipe fittings can help place this component within a complete piping system.
Blind Flange 2″ Class 2500
Blind Flange 2″ Class 2500 is used to seal the end of a piping system or close off a flange connection in Class 2500 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 an extremely high pressure rating is required.
This dimension data is based on ANSI / ASME B16.5-2020.
Blind Flange 2″ Class 2500 Dimensions
- Reference Standard: ANSI / ASME B16.5
- Nominal Pipe Size (NPS): 2″
- DN Size: DN50
- Flange Thickness: 50.8mm
- Weight: 18kg
- Stud Bolt Size: 1″ UNC (or M27) x 180 Long
- Number of Bolts: 8
- Hole Diameter: 1 1/8″ (28.575mm)
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 2″ Class 2500 is commonly used for:
- Pipe end closure
- Equipment isolation
- Valve and nozzle blanking
- Maintenance shutdown work
- Process and utility piping systems
- Extremely high pressure piping applications
CAD Drawing Download
This page includes the CAD drawing file for Blind Flange 2″ Class 2500, which can be used for drafting, detailing, and piping layout coordination.
Available Blind Flange Class 2500 Sizes
This size is part of the Blind Flange Class 2500 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 Read This Blind Flange Reference
The page separates the flange designation from the dimensional details. NPS identifies the nominal pipe size, while the corresponding DN entry provides the metric designation used in many project documents. These labels describe the connection size; they should not be treated as a measurement of the flange’s outside geometry.
The listed thickness, weight, stud bolt information, bolt count, and hole diameter are useful for drafting, material review, and installation planning. Confirm that the mating flange, gasket, washers, nuts, and bolting arrangement match the project specification. Bolt selection should also be checked against the actual joint design rather than inferred from flange size alone.
Design and Drafting Checks
- Confirm the flange class and nominal size against the piping line list or equipment connection.
- Check the bolt pattern and hole clearance when coordinating a mating flange or equipment nozzle.
- Verify gasket type, facing details, material specification, and pressure-temperature requirements before release for fabrication.
- Use the available DWG file for layout and detailing, then confirm critical dimensions against the project-approved reference.
For additional drafting work, related internal references for flange CAD/DWG files, piping dimensions, and flange bolt terminology can support model coordination without replacing the project specification.
Frequently Asked Questions
What is a Blind Flange 2 Inch Class 2500 used for?
It is used to close a piping end, equipment connection, valve or nozzle connection, or an isolation point where a solid flange is required.
What does NPS 2 correspond to on this page?
The reference identifies NPS 2 as DN50. NPS and DN are nominal designation systems and should be read together with the listed flange dimensions.
What bolt information is provided?
The source lists 8 bolts and identifies the stud bolt as 1 inch UNC, or M27, by 180 long. Confirm the final bolting arrangement with the mating flange and project requirements.
Can the DWG file be used directly for fabrication?
The DWG file is intended to support drafting, detailing, and piping layout coordination. Fabrication should proceed only after the drawing and dimensions are checked against the approved project documents.
What should be verified before installation?
Confirm the flange material, gasket type, bolt details, mating connection, and applicable pressure-temperature requirements before installation.