Watts Brass Tubular 3515-10 Quick Connect Coupling 1/2 Inch

Product Description

The WATTS BRASS TUBULAR 3515-10 is a 1/2-inch quick connect coupling designed for fast, tool-free connections on PEX, copper, and CPVC pipe systems. This single-piece fitting requires no assembly and has no loose parts to track on the job. The push-to-connect mechanism seats the pipe when inserted to the stop, and the fitting releases by pulling back on the collar ring. Licensed plumbers and experienced installers use this fitting for both new construction rough-in and repair work where speed and code compliance are required. NSF-14, NSF-61, and CSA/ASTM UPC certifications are included.

This coupling is rated for behind-wall installations without access panels and for direct in-ground burial, making it suitable for a wide range of residential and light commercial plumbing applications. It works with PEX, copper, and CPVC tubing in 1/2-inch nominal size. Each package contains 5 couplings, keeping inventory efficient on multi-connection jobs. The 3515-10 is also noted as a compatible replacement for Qest and Flare-It type fittings where that fitting style is being phased out or repaired.

Key Features

• Tool-free push-to-connect design seats pipe at internal stop with no crimping or soldering required
• Single-piece construction with no loose components to assemble or misplace
• Approved for behind-wall without access and direct in-ground burial installations
• NSF-14, NSF-61, and CSA/ASTM UPC listed and approved
• Compatible with PEX, copper, and CPVC tubing
• Serves as a direct replacement for Qest and Flare-It type fittings

Compatibility

Designed for use with 1/2-inch PEX, copper, and CPVC pipe and tubing. Listed as a replacement for Qest and Flare-It type fittings. Sold in a 5-piece package.

Installation Notes

Installation is performed by a licensed plumber or qualified tradesperson in accordance with local plumbing codes and IPC guidelines. Shut off the water supply and relieve system pressure before cutting and fitting pipe. Cut pipe square and deburr the end before inserting into the fitting to ensure a full seat at the internal stop. To disconnect, pull back firmly on the release ring while pushing the pipe slightly inward to reduce friction before withdrawing.