Description
125# Bronze Threaded Union
ASC / SCI FIG 36U1 125# Bronze Threaded Union provides a convenient threaded connection that allows compatible piping sections to be joined or separated without rotating the connected pipe.
Manufactured as part of the SCI Class 125 bronze fitting line, this union features female threaded ends and a separable union body for service, maintenance, and piping assembly applications.
Product Highlights
- ASC / SCI FIG 36U1
- Class 125 bronze fitting
- Threaded union design
- Female threaded connections
- UL Listed
- 100% air tested
Technical Specifications
| Product Type | Threaded Union |
|---|---|
| Brand | ASC / SCI |
| Figure | 36U1 |
| Fitting Class | Class 125 |
| Material | Cast Bronze |
| Bronze Alloy | UNS C83600 |
| Material Standard | ASTM B62 |
| Configuration | Threaded Union |
| Connection | Female NPT x Female NPT |
| Fitting Standard | AWWA C800 |
| Dimensional Standard | ASME B16.15 |
| Thread Standard | ASME B1.20.1 |
| Testing | 100% Air Tested |
| Listing | UL Listed |
Construction Details
FIG 36U1 is manufactured as a Class 125 cast bronze threaded union for joining compatible threaded piping components while maintaining a convenient point of disconnection.
The union uses female NPT connections on both ends with a separable center connection, allowing piping sections to be disconnected without rotating the adjoining pipe.
SCI identifies FIG 36U1 as UL Listed and 100% air tested, with independent laboratory verification of applicable chemical and physical properties.
Design & Typical Applications
Union Design
- Separable union connection
- Female NPT ends
- Bronze construction
- Reusable access point
- Class 125 fitting
Typical Applications
- Mechanical piping
- Heating systems
- Equipment connections
- Industrial piping
- Compatible utility piping
Installation & Selection Considerations
- Confirm the required thread size.
- Verify both mating connections.
- Use compatible thread sealant.
- Align union halves before tightening.
- Confirm system requirements.

Use the supplied SCI Bronze Fittings document to review FIG 36U1 item numbers, connection information, and product details when selecting the correct 125# bronze threaded union.
Need Help Selecting a 125# Bronze Threaded Union?
Need help confirming thread size, union configuration, bronze material requirements, or compatibility with your piping application? The GetPipe.com Team can help.
Frequently Asked Questions
What is the figure number for this bronze threaded union?
The ASC / SCI 125# Bronze Threaded Union is FIG 36U1.
What is a threaded union used for?
A threaded union joins two compatible piping sections while providing a convenient point where the connection can later be separated.
What connections does FIG 36U1 have?
FIG 36U1 uses female threaded connections on both ends.
Why use a union instead of a coupling?
A union can be separated at its center connection, allowing adjoining piping to be disconnected without rotating the connected pipe.
What material is FIG 36U1 made from?
FIG 36U1 is manufactured as part of SCI's Class 125 bronze fitting family.
Is FIG 36U1 UL Listed?
Yes. ASC identifies FIG 36U1 as a UL Listed Bronze 125# Threaded Union.
How is FIG 36U1 tested?
ASC identifies FIG 36U1 as 100% air tested with independent laboratory verification of applicable chemical and physical properties.
What should I confirm before ordering?
Confirm nominal thread size, female threaded connections, bronze compatibility, and the requirements of the intended piping system.
Important Ordering & Installation Notes
- Confirm the required thread size.
- Verify female threaded connections.
- Use suitable thread sealant.
- Align the union before tightening.
- Confirm intended system service.