3515-14 Push-fit Tube Union Coupling, 3/4 In., Plastic

The Watts 3515-14 is a plastic push-fit tube union coupling designed to join PEX, copper, and CPVC tubing quickly and securely without tools or special equipment. This no-assembly coupling simplifies new plumbing installations and repair projects by allowing you to push tubing into the fitting until it seats at the stop—no complex connections, no parts to lose, and no installation tools required. The reusable design lets you disconnect by simply pulling back on the ring to release the pipe, making it ideal for repairs, adjustments, and dynamic applications.

Whether you're working behind walls, upgrading an existing system, or tackling a DIY plumbing repair, this push-fit coupling eliminates the frustration of barbed fittings and traditional connections. It's rated for hot and cold water use and approved for behind-wall and direct in-ground burial installations, giving you versatility and confidence in any application.

Features and Benefits

• Tool-Free Installation: Simply push tubing into the fitting until it seats; no tools, thread sealant, or special skills required.
• Reusable and Adjustable: Pull back on the ring to disconnect and reconnect tubing without damaging the fitting, perfect for repairs and modifications.
• High-Performance Plastic Construction: Made from durable polysulfone material with an O-ring guide that ensures zero-leak connections and long service life.
• Rated for Demanding Applications: Designed for vibrating and dynamic applications; the fitting rotates under pressure for added flexibility and joins tubing on the outside to increase flow capacity.
• Certified for Safe Use: Approved for behind-wall and direct in-ground burial installations and suitable for both hot and cold water applications.
• Wide Compatibility: Works with PEX (LDPE, MDPE, HDPE), copper, and CPVC tubing in nominal 3/4-inch CTS (Copper Tube Size) configurations.

Specifications

• Brand: Watts
• Model: 3515-14
• Size: 3/4 in. nominal, CTS end
• Material: Plastic (polysulfone)
• Working Pressure: 250 psi at 75°F; 100 psi at 180°F
• Suitable For: Hot and cold water applications
• Certifications: ASTM F877, ANSI/NSF-61, NSF-14, CSA B1375, IAPMO ASSE 1061-2006, FDA approved
• Approved for: Behind-wall and direct in-ground burial installations

Descriptions are AI-generated. For accurate measurements, please call the store to confirm.