This reference provides the dimensional and installation-related details for a Blind Flange 14 Inch Class 600, including flange thickness, weight, stud bolt information, bolt-hole data, and the related CAD drawing resource. Use the listed values for drafting and preliminary coordination, then verify them against the project specification and applicable purchasing requirements.
The page is useful when checking a flange connection against a piping layout, equipment nozzle, valve arrangement, or maintenance isolation point. For related research, connect this reference with the site’s flange dimensions, pipe schedules, bolt and gasket selection, and CAD/DWG piping resources.
Blind Flange 14″ Class 600
Blind Flange 14″ 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 14″ Class 600 Dimensions
- Reference Standard: ANSI / ASME B16.5
- Nominal Pipe Size (NPS): 14″
- DN Size: DN350
- Flange Thickness: 69.8mm
- Weight: 161kg
- Stud Bolt Size: 1 3/8″ UNC (or M36) x 235 Long
- Number of Bolts: 20
- Hole Diameter: 1 1/2″ (38.1mm)
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 14″ 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 14″ 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 Use This Blind Flange Reference
A blind flange has no center bore, so it closes a flanged connection rather than allowing pipe flow through the flange. In a drawing or model, distinguish the blank flange from a weld-neck, slip-on, or other bored flange by checking the connection type and the intended closure location.
The source data separates the key dimensional fields into flange thickness, stud bolt size and length, number of bolts, and hole diameter. These fields serve different purposes: the bolt entry identifies the specified fastener arrangement, while the hole diameter describes the clearance opening in the flange. Do not treat those two entries as interchangeable when preparing fabrication or assembly documents.
Drafting and Coordination Checks
- Confirm the nominal pipe size and DN designation match the connected piping or equipment nozzle.
- Use the flange thickness and bolt-circle geometry represented in the source drawing when coordinating clearances and adjacent components.
- Check that the selected gasket, bolting, flange material, and facing details match the project specification.
- Verify access for bolt installation, tightening, inspection, and future removal at the intended isolation point.
- Review the applicable pressure-temperature rating and engineering requirements before fabrication or installation.
Related Reference Topics
Useful companion resources include flange facing terminology, gasket selection, stud bolt terminology, pipe-end closures, pressure-class comparisons, and piping isometric drafting. These internal links can help readers move from the dimensional reference to the selection and coordination decisions that surround a blind flange.
Blind Flange 14 Inch Class 600 FAQ
What is the purpose of this blind flange?
It is used to close the end of a piping system or seal a flanged connection. Typical coordination contexts include equipment isolation, valve or nozzle blanking, maintenance shutdown work, and future line extension.
Does a blind flange have a center bore?
No. A blind flange is a solid flange without a center bore, which allows it to act as a closure at the selected connection point.
What bolt information is listed for this flange?
The reference lists the stud bolt size, thread designation, bolt length, number of bolts, and hole diameter. Confirm the complete bolting arrangement with the project specification before ordering or installation.
Can the CAD file be used for fabrication?
The supplied DWG is intended for drafting, detailing, and piping layout coordination. Before fabrication, verify the drawing against the project’s approved dimensions, material requirements, gasket arrangement, and applicable engineering review.
What should be checked before installation?
Confirm the flange material specification, gasket type, bolt requirements, facing and alignment, and applicable pressure-temperature rating. Site and project requirements take precedence over a general reference entry.