Legend Valve 701508 Dielectric Union 2 Inches

Product Description

The LEGEND VALVE 701508 is a 2-inch dielectric union designed to isolate dissimilar metals in plumbing systems and prevent galvanic corrosion at pipe joints. Dielectric unions are installed where copper and steel piping meet, breaking the electrical continuity that accelerates corrosion and shortens system life. Weighing 2.58 pounds, this fitting is sized for 2-inch pipe connections and is installed by licensed plumbers during new construction, retrofit, and water heater service work.

This dielectric union is suited for residential and light commercial plumbing applications where copper supply lines connect to steel or iron pipe sections. Common installation points include water heater inlet and outlet connections, boiler supply and return piping, and other locations where mixed-metal pipe systems require corrosion isolation. The 2-inch size accommodates higher-flow domestic and heating system piping.

Key Features

• 2-inch pipe size for higher-flow plumbing and heating system connections
• Dielectric design isolates dissimilar metals to prevent galvanic corrosion
• Standard union configuration allows removal and reinstallation without cutting pipe
• Suitable for mixed-metal systems including copper-to-steel transitions

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 2-inch dielectric union applications in residential and commercial plumbing systems.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable IPC or local plumbing code requirements. Shut off the water supply and depressurize the line before disassembling or installing any union fitting. Use appropriate thread sealant or tape on threaded connections as required by the fitting type. Do not overtighten the union nut, as the internal dielectric sleeve must seat correctly to maintain galvanic isolation.

Technical Specifications

• Pipe Size: 2 inches
• Weight: 2.58 pounds
• UPC Code: 662545087672

Standard Information

• Brand: LEGEND VALVE
• Manufacturer Part Number: 701508