This reference brings together the key dimensional and identification information for a Blind Flange 2 1/2 Inch Class 600. Use the data below when checking a piping drawing, reviewing a material takeoff, or coordinating a flange connection with related fittings and equipment.
The page separates the flange’s physical reference data from practical guidance on terminology, bolting, CAD use, and project verification. For procurement or fabrication, compare the listed details with the project specification and the applicable flange, gasket, and bolting requirements.
Blind Flange 2 1/2″ Class 600
Blind Flange 2 1/2″ Class 600 is used to seal the end of a piping system or close off a flange connection in Class 600 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 2 1/2″ Class 600 Dimensions
- Reference Standard: ANSI / ASME B16.5
- Nominal Pipe Size (NPS): 2 1/2″
- DN Size: DN65
- Flange Thickness: 28.4mm
- Weight: 6.8kg
- Stud Bolt Size: 3/4″ UNC (or M20) x 120 Long
- Number of Bolts: 8
- Hole Diameter: 7/8″ (22.225mm)
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 1/2″ Class 600 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 2 1/2″ Class 600, which can be used for drafting, detailing, and piping layout coordination.
Available Blind Flange Class 600 Sizes
This size is part of the Blind Flange Class 600 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 nominal pipe size identifies the associated piping size, while the DN designation provides the corresponding metric naming convention. These labels help users locate the same flange family in piping specifications, plant design documents, and related flange or fitting references.
The thickness and weight entries are useful for drafting, material review, handling planning, and preliminary coordination. Weight should not be treated as a substitute for a supplier’s certified product information, because manufacturing details and material requirements can affect the final item supplied.
Understanding the Bolt Information
The stud bolt entry identifies the stated inch-based UNC designation, its metric alternative, and the listed length. The bolt count and hole diameter should be reviewed together when checking a bolt circle or coordinating the flange with a mating component. Final bolting selection should follow the project specification and the applicable assembly requirements.
Using the CAD File
The downloadable DWG file can support piping layout, equipment-nozzle coordination, drafting, and detailing. Treat the drawing as a reference resource and confirm that the selected flange facing, material, gasket arrangement, and mating component match the project documents before issuing fabrication or construction drawings.
Related Reference Topics
Readers comparing this item with other piping components may also benefit from the site’s references for flange dimensions, Class 600 flange sizes, stud bolt terminology, gasket selection, and piping CAD/DWG files. Linking these topics helps users move from a single component lookup to a complete connection review.
Frequently Asked Questions
What is a Blind Flange 2 1/2 Inch Class 600 used for?
It is used to close a pipe end, flange connection, equipment nozzle, or other piping opening where a solid blanking flange is required. The source content also identifies maintenance isolation and future connection work as common uses.
Does a blind flange have a center bore?
No. A blind flange is a solid flange without a center bore. Its purpose is to provide closure rather than to allow fluid to pass through the flange.
What bolt information is listed for this flange?
The reference lists the stud bolt designation, metric alternative, length, number of bolts, and hole diameter. Confirm the final bolting arrangement against the mating flange, project specification, and installation requirements.
Can the DWG file be used for fabrication?
The DWG is intended to support drafting, detailing, and piping layout coordination. Before fabrication, verify the drawing against the project’s approved dimensions, material specification, facing details, gasket requirements, and applicable pressure-temperature rating.
Should the listed weight be used as the final shipping weight?
No. Use the listed weight as the reference value on this page, but obtain certified supplier information when shipping, lifting, procurement, or installation decisions depend on the actual finished product.