3/4" x R25 Brass Adapter

Product Overview

The Uponor A4332575 Brass Adapter is a precision-engineered QS-Style fitting designed for use in hydronic, plumbing, and radiant heating systems. This adapter connects R25 Uponor piping to 3/4-inch copper tubing, providing a reliable transition between composite or PEX systems and copper connections. Constructed from high-grade brass, the fitting offers mechanical strength, corrosion resistance, and temperature stability under standard operating pressures for professional-grade installations.

Technical Specifications

• Model: A4332575
• Manufacturer: Uponor
• Product Type: Brass Adapter Fitting
• Series: QS-Style
• Connection Type: R25 x 3/4-inch Copper (C x C)
• Material: Brass
• Hex Size: 1.375 inches
• Overall Length: 1.94 inches
• Nominal Pressure Rating: 125 PSI
• Temperature Rating: Up to 220°F (104°C)
• Application: Transition fitting for hydronic heating, plumbing, and radiant distribution systems
• Installation Type: Compatible with Uponor R25 connection system and standard copper joining techniques
• Finish: Machined brass surface
• Compliance: Meets ASTM and ANSI specifications for brass fittings; suitable for potable water and closed-loop systems

Professional Notes

Install in accordance with Uponor manufacturer instructions and local mechanical and plumbing codes. Ensure that all connections are properly cleaned, aligned, and secured. Use compatible joining methods for copper ends and verify correct engagement with R25 fittings. Do not exceed rated temperature and pressure limits. Suitable for use in hydronic heating loops, potable water systems, and mechanical piping installations requiring a brass-to-copper transition.

Summary

The Uponor A4332575 Brass Adapter is an R25 x 3/4-inch C x C transition fitting constructed from high-strength brass. Measuring 1.94 inches in length with a 1.375-inch hex, it is rated for 125 PSI and 220°F operation, providing a durable and code-compliant connection for professional hydronic and plumbing systems.