Value Brand
Value Brand Reducer Coupling 2in x 1-1/4in FNPT Malleable Iron Class 150 5P577
Reducer coupling connects 2 inch and 1-1/4 inch FNPT pipes using malleable iron rated for Class 150 service
- Reduces pipe size from 2 in to 1-1/4 in FNPT
- Malleable iron construction rated for Class 150 service
- Female NPT threads on both ends at 11 1/2 TPI
- Zoro Select brand fitting for plumbing systems
- New condition ready for immediate installation
Reducing coupling for 2 in to 1-1/4 in FNPT pipe
This malleable iron reducing coupling joins a 2 inch female NPT thread to a 1-1/4 inch female NPT thread. It is rated Class 150 for standard pressure service. The ZORO SELECT fitting suits plumbing systems that require a step-down connection between two different pipe diameters. The part arrives new and ready for installation.
Verify thread standard
Confirm that both pipe ends use NPT threads with an 11 1/2 thread pitch. Ensure the system operating pressure stays within the Class 150 rating of this malleable iron body. Check that the 2 inch and 1-1/4 inch nominal sizes match the existing pipe schedule. The coupling is restricted from sale in certain states, so review local code compliance.
Replaces a straight coupling
Use this reducer instead of a straight coupling when the line transitions from 2 inch to 1-1/4 inch pipe. It eliminates the need for a separate bushing and nipple combination, saving space and potential leak paths. The jump is worth it whenever a direct, single-piece reduction simplifies the piping layout and meets the Class 150 requirement.
Highlights
- Reduces pipe size from 2 in to 1-1/4 in FNPT
- Malleable iron construction rated for Class 150 service
- Female NPT threads on both ends at 11 1/2 TPI
- Zoro Select brand fitting for plumbing systems
- New condition ready for immediate installation
Specifications
| Brand | ZORO SELECT |
|---|
Questions about this item
Does the Value Brand Reducer Coupling 5P577 come with thread sealant or PTFE tape included?
The fitting is supplied alone; thread sealant or PTFE tape must be purchased separately to make a leak-free NPT joint.
Should I choose the 2 in x 1-1/4 in FNPT malleable iron Class 150 version or a different size for my pipe run?
Select this coupling only when you need to join a 2 in male NPT pipe to a 1-1/4 in male NPT pipe at a maximum working pressure of 150 psi.
What does the Class 150 rating mean once the reducer is installed in a real piping system?
Class 150 indicates the fitting is rated for 150 psi working pressure at ambient temperature with water or air.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
Taylor Made 12" x 18" Jolly Roger Novelty Flag 1818 marine electronic
- Accessories



