UponorVerified
LF4521010
1 inch Uponor Quick & Easy PEX to Male Pipe Thread Adapter, Lead Free
Product Overview
The Uponor ProPEX LF Brass Male Threaded Adapter (LF4521010) provides a robust connection from 1" PEX tubing to 1" male NPT threads, engineered with durable lead-free brass. Ideal for diverse applications including hot/cold domestic potable water, residential fire safety, and hydronic radiant heating/cooling systems, this adapter is also safe for direct burial. Easily access the comprehensive **spec sheet**, detailed **shop drawings**, and required documentation for efficient project **submittal**.
Key Features
- Lead-free (LF) brass construction for potable water safety
- Designed for 1" PEX tubing to 1" male NPT threaded connections
- Approved for domestic potable water, residential fire safety, and radiant heating/cooling systems
- Rated for hydrostatic temperatures up to 200°F (93°C) at 80 psi (5.5 bar)
- Suitable for direct burial in soil installations
Technical Specs
Weight0.38 lbs
MaterialLF Brass
Model NumberLF4521010
CertificationsUL 1821, cNSFus-pw-fs-G, NSF-372, NSF-61, ASTM F877, CSA B137.5, IAPMO-ES, ICC-ES-PMG
Connection Type1" PEX x 1" NPT Male Thread
DHW Operating ConditionsMax 140°F (60°C) at 80 psi (5.5 bar) per ASTM F2023
Prop 65 Warning RequiredYes
Dimensions (Overall Length x Hex Size)2.286 inch x 1.105 inch
Temperature/Pressure Ratings (Hydrostatic)73°F (23°C) at 160 psi (11 bar); 180°F (82°C) at 100 psi (6.9 bar); 200°F (93°C) at 80 psi (5.5 bar)
About This Spec
Last Verified
April 3, 2026
Status
Verified (2x confirmed)