Uponor
ProPEX LF Brass Sweat Adapter 3/4" PEX x 3/4" Copper
- SKU:
- LF4517575
- Availability:
- Ships within 10 business days
- Weight:
- 0.11 LBS
Description
ProPEX LF Brass Sweat Adapter 3/4" PEX x 3/4" Copper
Uponor ProPEX LF Brass Sweat Adapter is a lead-free brass fitting designed to transition from 3/4" PEX tubing, including Uponor AquaPEX®, to 3/4" copper pipe.
The fitting uses a ProPEX® expansion connection on the PEX side and a female sweat connection that slips over copper pipe for soldering. It is suitable for potable hot and cold water distribution, hydronic heating, radiant heating and cooling, and other PEX-to-copper transition applications.
Product Highlights
- 3/4" PEX x 3/4" copper connection
- Lead-free brass construction
- ProPEX expansion connection on PEX side
- Female sweat connection for copper pipe
- Designed for PEX-to-copper transitions
- Suitable for potable hot and cold water systems
- Suitable for hydronic heating applications
- Suitable for radiant heating and cooling systems
- Suitable for applicable fire-safety installations
- Suitable for direct burial
Technical Specifications
| Manufacturer | Uponor |
|---|---|
| Product Line | ProPEX |
| Fitting Type | LF Brass Sweat Adapter |
| PEX Connection | 3/4" |
| Copper Connection | 3/4" |
| PEX Connection Type | ProPEX Expansion |
| Copper Connection Type | Female Sweat |
| Material | Lead-Free Brass |
| Pressure Rating | Up to 200 psi |
| Temperature Rating | Up to 200°F (93°C) |
| Overall Length | 2.04" |
| Applications | Potable Water, Hydronic Heating, Radiant Heating/Cooling and PEX-to-Copper Transitions |
| Certifications | ASTM F877, ASTM F1960, NSF/ANSI/CAN 61, NSF/ANSI 14 and cNSFus-pw-G |
ProPEX Expansion Connection
The PEX side uses the ProPEX expansion connection system for connection to compatible PEX-a tubing. This provides a reliable transition without requiring a torch on the PEX connection.
Female Sweat Connection
The copper side features a female sweat connection that slips over compatible 3/4" copper pipe and is joined using standard soldering methods.
Lead-Free Brass Construction
The adapter is manufactured from lead-free brass for use in potable water systems and provides corrosion resistance and mechanical strength for long-term plumbing applications.
PEX-to-Copper Transition
This fitting provides a compact transition between Uponor PEX-a tubing and copper piping for new construction, retrofit, hydronic, and radiant system installations.
Plumbing & Hydronic Applications
The ProPEX LF Brass Sweat Adapter is suitable for potable hot and cold water distribution, hydronic heating, radiant heating and cooling, and other applications requiring a 3/4" PEX-to-3/4" copper transition.

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 transitions from a 3/4" ProPEX PEX connection to a 3/4" female sweat copper connection.
What material is the adapter made from?
The adapter is constructed from lead-free brass.
How does the PEX side connect?
The PEX side uses the ProPEX expansion connection system and is designed for compatible PEX-a tubing.
How does the copper side connect?
The copper side uses a female sweat connection that slips over compatible copper pipe for soldering.
What is the pressure rating?
The supplied product information lists a pressure rating of up to 200 psi.
What is the temperature rating?
The supplied product information lists a temperature rating of up to 200°F (93°C).
What applications is this fitting suitable for?
It is suitable for potable water systems, hydronic heating, radiant heating and cooling, and other PEX-to-copper transition applications.
Is this fitting suitable for direct burial?
Yes. The supplied product information identifies the lead-free brass adapter as suitable for direct burial.
What certifications are listed?
The supplied product information lists ASTM F877, ASTM F1960, NSF/ANSI/CAN 61, NSF/ANSI 14, and cNSFus-pw-G.
What is the overall length?
The supplied product information lists an overall length of 2.04 inches.
Important Ordering Notes
This listing is for a 3/4" PEX x 3/4" Copper ProPEX LF Brass Sweat Adapter. Verify the required PEX size, copper size, connection types, pressure and temperature requirements, and system compatibility before ordering.