Uponor a4322020 Coupling R20 X R20 Nut

Product Description

The UPONOR a4322020 is an R20 x R20 coupling with R20 nut fittings, designed for use in plumbing and radiant heating piping systems. This coupling connects two R20-threaded components using a nut-style engagement, providing a secure, leak-resistant joint at transition or extension points in a piping run. Licensed plumbers and hydronic heating installers are the typical tradespeople who work with this fitting during system assembly or repair. The R20 thread standard is common in European-style PEX and multilayer pipe systems, making this coupling appropriate for residential and light commercial hydronic applications.

This coupling is suited for use in radiant floor heating systems, plumbing distribution manifolds, and other hydronic piping configurations that rely on R20-threaded connections. It is used wherever two R20-nut fittings must be joined inline, such as during pipe extensions, repairs, or manifold assembly. The fitting is intended for use with compatible UPONOR piping and fittings that share the R20 thread specification.

Key Features

• R20 x R20 configuration joins two R20-threaded components inline
• Nut-style coupling design allows for controlled tightening and a secure seal
• Compatible with R20-threaded PEX and multilayer pipe fittings
• Suited for radiant heating and plumbing distribution applications

Compatibility

Designed as an OEM-style replacement or system fitting for use with R20-threaded UPONOR piping components in hydronic heating and plumbing systems.

Installation Notes

Installation should be performed by a licensed plumber or qualified hydronic heating technician. Shut off system water supply and relieve pressure before making any connections. Use appropriate R20 tooling or wrenches to tighten the nut fitting to the manufacturer-specified feel without over-torquing. Follow all applicable local plumbing codes and system manufacturer guidelines during installation.

Technical Specifications

• Thread Size: R20 x R20
• Fitting Type: Coupling with Nut

Standard Information

• Brand: UPONOR
• Manufacturer Part Number: a4322020