3/8" Compression Fitting Assembly

The Uponor A4020375 Fitting Assembly is a precision-engineered component designed for professional plumbing and mechanical applications requiring dependable compression connections. Built for efficiency, durability, and compliance with industry standards, this fitting ensures optimal system performance under demanding conditions. It is compatible with QS-Style systems and supports high-temperature and high-pressure operations typical in commercial and industrial installations.

Details

• Model Number: A4020375
• Manufacturer: Uponor
• Product Type: Fitting Assembly
• Connection Type: Compression
• Series: QS-Style
• Size: R20 x 3/8 inch nominal
• Hex Size: 1.37 inch
• Pressure Rating: 125 PSI
• Temperature Rating: 220 °F (maximum)
• Material Compatibility: Designed for Uponor PEX systems and equivalent professional-grade piping applications

Professional Specifications

Engineered for reliability in high-performance hydronic, plumbing, and mechanical systems, this fitting assembly maintains tight sealing integrity under sustained thermal and mechanical stress. The compression design allows for rapid installation and secure connection without requiring specialized tools beyond standard contractor equipment. Each fitting is manufactured to Uponor quality assurance standards, ensuring consistency across system installations.

Summary

The Uponor A4020375 3/8-inch QS-Style fitting assembly delivers consistent, code-compliant performance for professional installations. Its robust construction, pressure-temperature tolerance, and streamlined compression interface make it a preferred choice for contractors executing precision PEX system work.