This reference page provides the key identification and dimensional information for a Blind Flange 24 Inch Class 150, including the listed thickness, weight, stud bolt details, bolt count, and hole diameter. Use the source data for drafting and preliminary coordination, then confirm the project specification before procurement or installation.
The page also links the flange dimensions to practical piping work: selecting a blanking component, coordinating bolt and gasket details, checking equipment connections, and downloading a CAD file for layout or detailing. For related terminology, see the site’s references on flange dimensions, pipe schedules, flange bolt holes, and piping CAD drawings.
Blind Flange 24″ Class 150
Blind Flange 24″ Class 150 is used to seal the end of a piping system or close off a flange connection in Class 150 service. It is a solid flange without a center bore and is commonly applied in industrial piping, maintenance isolation points, and future line expansion connections.
This dimension data is based on ANSI / ASME B16.5.
Blind Flange 24″ Class 150 Dimensions
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- Reference Standard: ANSI / ASME B16.5
- Nominal Pipe Size (NPS): 24″
- DN Size: DN600
- Flange Thickness: 46mm
- Weight: 196kg
- Stud Bolt Size: 1 1/4″ UNC (or M33) x 170 Long
- Number of Bolts: 20
- Hole Diameter: 1 3/8″ (34.925mm)
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 150 is commonly used for:
- Pipe end closure
- Equipment isolation
- Valve and nozzle blanking
- Maintenance shutdown work
- Process and utility piping systems
CAD Drawing Download
This page includes the CAD drawing file for Blind Flange 24″ Class 150, which can be used for drafting, detailing, and piping layout coordination.
Available Blind Flange Class 150 Sizes
This size is part of the Blind Flange Class 150 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
A blind flange has no center bore. Unlike a flange intended to connect directly to an open pipe bore, it closes a flanged connection and provides a removable access point for isolation, maintenance, inspection, or future modifications. The flange face, gasket arrangement, bolting, and mating component must be considered together during design and installation.
The designation combines a nominal pipe size with a Class 150 pressure class. The nominal size identifies the associated piping size, while the class designation identifies the applicable flange rating category. Neither designation should be treated as a substitute for checking the project’s pressure-temperature requirements, materials, facing details, gasket selection, and governing specification.
Using the Dimensions for Drafting
- Use the listed flange thickness and weight when coordinating fabrication, handling, and equipment access.
- Use the stated stud bolt size, length, and bolt count when checking the connection against the mating flange and approved bolting specification.
- Use the listed hole diameter for drawing coordination, while confirming the complete bolt-hole pattern and mating component from the applicable project documents.
- Download the DWG file for piping layout and detailing, then verify the drawing against the current project model and approved vendor information.
Checks Before Installation
Confirm that the blind flange matches the mating flange, gasket type, flange facing, material specification, and required pressure-temperature rating. Bolt length can depend on the assembled connection, including gasket and flange details, so the listed value should be checked against the actual joint. Installation should also follow the project’s bolting, tightening, inspection, and isolation procedures.
Frequently Asked Questions
What is a blind flange used for?
A blind flange closes the end of a pipeline, vessel nozzle, valve connection, or other flanged opening. It can support isolation, maintenance, inspection, or a future connection, subject to the design and operating requirements.
What information is provided for this flange?
The reference lists the nominal pipe size, DN designation, flange thickness, weight, stud bolt size and length, number of bolts, and hole diameter. It also identifies the referenced standard and provides a CAD download.
Does the listed bolt size apply to every installation?
The listed bolt information describes this reference configuration. Confirm the mating flange, gasket, facing, material, washer requirements, tightening procedure, and project specification before ordering or installing hardware.
Can the DWG file be used directly for fabrication?
The DWG is intended for drafting, detailing, and piping layout coordination. Review it against the source dimensions, project requirements, approved drawings, and supplier documentation before using it for fabrication.
What should be checked before selecting this flange?
Check the flange size and class, mating connection, material specification, gasket type, bolt details, pressure-temperature rating, and applicable project requirements. Engineering review is required where the connection affects system safety or integrity.