Description
150# Ductile Iron Blind Flange
150# Ductile Iron Blind Flanges provide a durable method for closing the end of a compatible flanged piping system, valve, or equipment connection.
The ASC / SCI Class 150 blind flange uses a solid-face design without a center opening, allowing a flanged connection to be securely terminated while maintaining access for future system modifications or service.
Product Highlights
- ASC / SCI ductile iron flange
- Class 150 flange design
- Solid blind configuration
- Bolted flange connection
- Figure 17BL1 / 18BL1 family
- Black or galvanized configurations
Technical Specifications
| Product Type | Blind Flange |
|---|---|
| Brand | ASC / SCI |
| Figure | 17BL1 / 18BL1 |
| Material | Ductile Iron |
| Flange Class | 150# |
| Configuration | Blind / Solid Flange |
| Connection Type | Bolted Flanged Connection |
| Primary Function | Terminate a Flanged Piping Connection |
Construction Details
The ASC / SCI blind flange is manufactured from ductile iron for use with compatible Class 150 flanged piping components.
Unlike a threaded companion flange, the blind flange has no center flow opening. Its solid construction closes the end of a flanged connection when properly bolted and gasketed.
SCI identifies the Class 150 blind flange family as Figures 17BL1 and 18BL1, covering black and galvanized configurations within the product family.
Blind Flange Design & Typical Applications
Blind Flange Design
- Solid center configuration
- Class 150 bolt pattern
- Ductile iron construction
- Removable bolted closure
- Gasketed flange connection
Typical Applications
- Industrial piping systems
- Water distribution piping
- Utility piping systems
- Valve and equipment isolation
- Flanged pipe termination
Installation & Selection Considerations
- Confirm the nominal flange size.
- Verify Class 150 compatibility.
- Select a compatible flange gasket.
- Confirm the mating bolt pattern.
- Follow proper bolting practices.
Use the supplied flange documents to review flange specifications, ductile iron construction, connection requirements, and other technical information when selecting the correct blind flange.
Need Help Selecting a 150# Ductile Iron Blind Flange?
Need help confirming flange size, Class 150 compatibility, gasket requirements, or the correct blind flange for your piping system? The GetPipe.com Team can help.
Frequently Asked Questions
What is a blind flange?
A blind flange is a solid flange without a center flow opening that is used to close the end of a compatible flanged piping connection.
What material is this blind flange?
This blind flange is manufactured from ductile iron.
What is the SCI figure for this flange family?
SCI identifies the Class 150 ductile iron blind flange family as Figures 17BL1 and 18BL1 for black and galvanized configurations.
What does 150# mean?
150# identifies the flange class and should not by itself be interpreted as a universal 150 PSI working-pressure rating.
Does a blind flange have a threaded opening?
No. A blind flange has a solid center and is designed to terminate a flanged connection rather than provide a threaded pipe outlet.
Is a gasket required with a blind flange?
A suitable flange gasket should be selected for the mating flange faces, conveyed media, temperature, and system operating conditions.
Can a blind flange be removed later?
Yes. Because the flange is bolted rather than permanently welded closed, it can be removed when the piping system is properly isolated and depressurized.
What should I confirm before ordering?
Confirm the nominal flange size, Class 150 requirement, mating flange compatibility, finish, gasket requirements, and intended system service.
Important Ordering & Installation Notes
- Confirm the nominal flange size.
- Verify Class 150 compatibility.
- Select the proper flange gasket.
- Confirm the required finish.
- Follow proper bolting practices.
