Legend Valve LEG301-104NL 3/4 Inch Fnpt X Sweat No Lead Dielectric Union T-571NL

Product Description

The Legend Valve LEG301-104NL is a 3/4 inch no lead dielectric union designed for connecting copper and iron or steel pipe sections in plumbing and HVAC systems. It is sold under the T-571NL product line and meets no lead compliance standards required in potable water applications across residential and commercial plumbing installations. This union features a female NPT (FNPT) connection on one end and a sweat connection on the other, making it well suited for transitioning between threaded iron pipe and copper tubing in a single fitting. Plumbers and pipefitters rely on dielectric unions like this one to prevent galvanic corrosion, which occurs when two dissimilar metals come into direct contact in the presence of water. Without a dielectric union, the electrochemical reaction between copper and ferrous pipe can cause rapid corrosion, joint failure, and costly repairs. The LEG301-104NL interrupts this electrical path using an internal plastic sleeve and rubber gasket that isolate the two metal sections from each other. This design protects piping systems over the long term and maintains water quality by reducing corrosion byproducts. The fitting is rated for up to 180 degrees Fahrenheit maximum temperature and 200 CWP (cold working pressure), making it appropriate for domestic hot and cold water supply lines, water heater connections, boiler piping, and hydronic heating systems. The no lead construction ensures compliance with state and federal lead-free plumbing laws, including requirements under the Safe Drinking Water Act. This fitting is a standard choice for licensed plumbers working on potable water systems where lead-free materials are mandatory. Its FNPT x sweat configuration allows fast, reliable connections with standard soldering techniques on the copper side and threaded assembly on the iron side.

• No lead construction meets lead-free compliance requirements for potable water systems
• Dielectric isolation sleeve and gasket prevent galvanic corrosion between copper and iron pipe
• FNPT x sweat configuration supports transition between threaded and copper piping

Product Highlights

The Legend Valve LEG301-104NL delivers reliable galvanic corrosion protection in a no lead, 3/4 inch dielectric union rated for 180 degrees Fahrenheit and 200 CWP, making it a dependable choice for water heater, boiler, and potable water supply connections.

Product Information

Standard Information

• Brand: LEGEND VALVE
• Manufacturer Part Number: LEG301-104NL

Technical Specifications

• Size: 3/4 inches
• Connection Type: FNPT x Sweat
• Maximum Temperature: 180 degrees Fahrenheit
• Pressure Rating: 200 CWP
• Lead Free: Yes
• UPC: 662545087634