Uponor
ProPEX LF Brass Male Threaded Adapter 3/4" PEX x 3/4" NPT
- SKU:
- LF4527575
- Availability:
- Ships within 10 business days
- Weight:
- 0.20 LBS
Description
ProPEX LF Brass Male Threaded Adapter 3/4" PEX x 3/4" NPT
Uponor ProPEX LF Brass Male Threaded Adapter is designed to transition 3/4" PEX tubing, including Uponor AquaPEX®, to a 3/4" male NPT threaded connection.
Part of the ProPEX® fitting system, this lead-free brass adapter provides a durable PEX-to-threaded-pipe transition for potable hot and cold water distribution, hydronic radiant heating and cooling, domestic plumbing, and other compatible PEX-based systems. Installation requires a ProPEX expansion tool and compatible ProPEX rings.
Product Highlights
- 3/4" PEX x 3/4" male NPT connection
- Lead-free brass construction
- ProPEX expansion connection on the PEX side
- Male NPT threaded connection
- Compatible with Uponor AquaPEX® PEX-a tubing
- Suitable for potable hot and cold water distribution
- Suitable for hydronic radiant heating and cooling systems
- Designed for residential and commercial plumbing applications
- Provides a durable PEX-to-threaded-pipe transition
- Requires ProPEX expansion tool and compatible rings for installation
Technical Specifications
| Manufacturer | Uponor |
|---|---|
| Product Line | ProPEX |
| Fitting Type | LF Brass Male Threaded Adapter |
| PEX Connection | 3/4" |
| Threaded Connection | 3/4" Male NPT |
| PEX Connection Type | ProPEX Expansion |
| Material | Lead-Free Brass (C-69300 / C-314 depending on specification) |
| Length | 2.02" (approximately 1-15/16") |
| Hex Size | Approximately 1-1/8" |
| Pressure Ratings | Up to 200 psi at lower temperatures; typical ratings include 160 psi at 73°F, 100 psi at 180°F and 80 psi at 200°F |
| Temperature Rating | Up to 200°F, depending on system conditions |
| Tubing Compatibility | Uponor AquaPEX® PEX-a Tubing |
| Installation | Requires ProPEX® Expansion Tool and ProPEX-Compatible Rings |
| Standards | ASTM F877 and ASTM F1960 |
| Certifications | NSF/ANSI 14, NSF/ANSI 61, CSA B137.5, IAPMO, UPC, IPC, NSPC and ICC-ES where applicable |
| Applications | Potable Hot & Cold Water, Hydronic Radiant Heating/Cooling, Domestic Plumbing and Compatible PEX-Based Systems |
PEX-to-Male NPT Transition
The adapter provides a transition from 3/4" PEX-a tubing to a 3/4" male NPT threaded connection for integration with compatible female-threaded piping components and equipment.
Lead-Free Brass Construction
Lead-free brass construction provides the durability and corrosion resistance needed for potable water, hydronic, and other compatible plumbing applications.
ProPEX Expansion Connection
The PEX end uses the ProPEX expansion connection system and is compatible with Uponor AquaPEX® PEX-a tubing. Proper installation requires a ProPEX expansion tool and compatible ProPEX rings.
Plumbing & Hydronic Applications
The adapter is suitable for potable hot and cold water distribution, hydronic radiant heating and cooling, domestic plumbing, and other compatible PEX-based piping systems.

Review the Uponor Product Catalog for additional ProPEX fitting information, or contact the GetPipe.com team for help with fitting selection, tubing compatibility, and installation requirements.
Frequently Asked Questions
What size connections does this adapter have?
This adapter has a 3/4" ProPEX connection for PEX tubing and a 3/4" male NPT threaded connection.
What material is the adapter made from?
The adapter is constructed from lead-free brass. The product information identifies C-69300 or C-314 brass depending on the applicable specification.
What tubing is compatible with this adapter?
The adapter is compatible with Uponor AquaPEX® PEX-a tubing using the ProPEX expansion connection system.
What is required to install the PEX connection?
Installation requires a ProPEX® expansion tool and compatible ProPEX rings, which are sold separately.
What are the pressure ratings?
The product information lists pressure ratings up to 200 psi at lower temperatures, with typical ratings of 160 psi at 73°F, 100 psi at 180°F, and 80 psi at 200°F.
What is the maximum listed temperature?
The product information lists a temperature rating up to 200°F, depending on system conditions.
What applications can this adapter be used for?
Applications include potable hot and cold water distribution, hydronic radiant heating and cooling, domestic plumbing, and other compatible PEX-based systems.
What standards and certifications are listed?
The product information lists ASTM F877, ASTM F1960, NSF/ANSI 14, NSF/ANSI 61, CSA B137.5, IAPMO, UPC, IPC, NSPC, and ICC-ES where applicable.
What is the approximate length of the adapter?
The listed length is 2.02 inches, or approximately 1-15/16 inches.
What size wrench connection does the adapter have?
The product information lists an approximately 1-1/8" hex for wrench engagement.
Important Ordering Notes
This listing is for a 3/4" PEX x 3/4" Male NPT ProPEX LF Brass Male Threaded Adapter. Verify PEX size, NPT size and gender, system compatibility, and required ProPEX installation tools and rings before ordering.