Nibco, Inc. 707-3R-LF 1 in Cup x 3/4 in FNPT 90° Reducing Elbow Bronze

Potable-water elbow for copper systems

The NIBCO 707-3R-LF is a sweat fitting that joins a 1 in copper tube to a 3/4 in FNPT thread at a 90-degree angle. It is rated for potable water service and meets NSF/ANSI 61 and NSF/ANSI 372 standards for drinking-water safety. The bronze body is manufactured to ASME B16.18 and ISO 9001 specifications. Installers who need a lead-free reducing elbow for hot or cold supply lines will find it suitable.

Certified material and pressure rating

The C87850 bronze alloy satisfies lead-free requirements and carries third-party certification for potable water contact. Maximum operating pressure is 385 psi and maximum operating temperature is 200 degrees F, covering typical residential and commercial plumbing conditions. These documented ratings replace guesswork when sizing the system and verifying code compliance. No additional sealants or coatings are required beyond standard soldering practice.

Sweat-to-thread transition for mixed piping

The cup end accepts 1 in copper tube with a 1 1/8 in outer diameter for a soldered joint, while the FNPT end receives 3/4 in male pipe threads. This reducing elbow lets plumbers change both direction and pipe size in a single fitting, reducing the number of joints in tight spaces. Bronze construction resists dezincification and handles thermal cycling in hot-water recirculation loops. The compact 90-degree profile fits between studs and inside cabinets without special clearance.