This reference page provides the listed dimensions, weight, stud bolt information, and CAD resource for a Blind Flange 10 Inch Class 150. Use the data with the project’s piping specifications, fabrication documents, and applicable engineering checks.
A blind flange has no center bore, so it closes a flanged connection rather than providing a flow path. That makes it useful where a pipe end, equipment nozzle, valve connection, or future branch must be isolated while retaining a removable bolted connection.
Blind Flange 10″ Class 150
Blind Flange 10″ 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 10″ Class 150 Dimensions
- Reference Standard: ANSI / ASME B16.5
- Nominal Pipe Size (NPS): 10″
- DN Size: DN250
- Flange Thickness: 28.4mm
- Weight: 32kg
- Stud Bolt Size: 7/8″ UNC (or M24) x 115 Long
- Number of Bolts: 12
- Hole Diameter: 1″ (25.4mm)
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 10″ 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 10″ 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 Use This Blind Flange Reference
The existing dimension list identifies the nominal pipe size, DN designation, flange thickness, weight, stud bolt size, bolt quantity, and hole diameter. These fields serve different purposes during design and drafting. Size designations help coordinate the flange with piping documents, while thickness and weight support detailing, handling, and material planning.
NPS and DN Terminology
NPS is the nominal pipe size designation used in inch-based piping references. DN is the corresponding metric designation shown for coordination. Neither designation should be treated as a direct measurement of every flange feature. For fabrication and procurement, compare the complete flange data with the project specification and the mating component.
Bolt and Gasket Coordination
The listed stud bolt information should be checked against the mating flange, gasket selection, washer requirements, thread practice, and the project bolting specification. Bolt length can depend on the assembled flange thickness, gasket arrangement, washers, and the required thread engagement. Do not select replacement bolting from nominal size alone.
Installation and Isolation Considerations
Before a blind flange is removed or installed, the connected system should be isolated, depressurized, and verified safe under the applicable site procedure. The flange face, gasket seating surface, and bolt condition should be inspected before assembly. Final tightening and leak testing should follow the responsible engineering and maintenance requirements.
Related PipeSTD References
For broader coordination, compare this page with related blind flange dimensions, flange bolt size references, pipe schedules, and flange CAD drawings. The available DWG file can support drafting and layout work, but the project’s approved drawings and specifications remain controlling for fabrication and installation.
Frequently Asked Questions
What is a Blind Flange 10 Inch Class 150?
It is a solid, bored-free flange used to close a flanged piping, equipment, valve, or nozzle connection in the listed Class 150 series. Because it is bolted in place, it can be removed when access, inspection, maintenance, or future line work is required.
What standard is identified for these dimensions?
The source data identifies ANSI / ASME B16.5 as the reference standard. Always confirm the governing project specification and the required material, facing, and pressure-temperature conditions before procurement.
Does a blind flange have a center opening?
No. A blind flange is a solid flange without a center bore. Its purpose is to provide closure at a pipe, vessel, equipment, or valve connection.
Can the listed stud bolts be used for every installation?
Not automatically. Confirm the mating flange, gasket, washers, thread requirements, material specification, and required assembled length before ordering or installing bolting.
Is a CAD file available for this flange?
Yes. The source content provides a DWG download for the Blind Flange Class 150 reference. Use the drawing for drafting and coordination, then verify critical dimensions against approved project documentation before fabrication.
What should be checked before installation?
Confirm the flange material, gasket type, bolting, mating component, flange face condition, and applicable pressure-temperature rating. Installation should also follow the project’s isolation, tightening, inspection, and testing procedures.