Legend Valve DUN-EA05LF Dielectric Union Fip X Fbp 1 in

Product Description

The LEGEND VALVE DUN-EA05LF is a 1-inch dielectric union designed to isolate dissimilar metals in piping systems and prevent galvanic corrosion. Featuring female iron pipe (FIP) on one end and female brass pipe (FBP) on the other, this fitting creates an electrical break at the joint between unlike pipe materials. Plumbers and pipefitters install this union where copper, steel, or galvanized lines meet, protecting system integrity and extending service life. The lead-free construction meets current potable water compliance requirements.

This dielectric union is suited for residential and light commercial plumbing applications, including domestic water supply lines, water heater connections, and any transition point between ferrous and non-ferrous piping. It is commonly installed at water heater inlet and outlet connections where copper supply lines connect to steel-threaded fittings, a location where galvanic corrosion is a known service problem. The FIP x FBP configuration accommodates standard threaded pipe ends on both sides.

Key Features

• 1-inch FIP x FBP threaded ends for standard pipe connections
• Dielectric insulator separates dissimilar metals to block galvanic current
• Lead-free construction for potable water service compliance
• Union design allows disconnection without cutting pipe
• Suitable for use at water heater and domestic water supply transitions

Compatibility

Designed as an OEM-style replacement or new-installation dielectric union for 1-inch threaded plumbing systems requiring a transition between dissimilar pipe materials in residential or light commercial water supply applications.

Installation Notes

Installation is performed by a licensed plumber in accordance with applicable local plumbing codes and the International Plumbing Code (IPC). Shut off the water supply and relieve system pressure before disassembling or installing any union fitting. Apply thread sealant or PTFE tape to all male threaded connections per standard practice. Do not over-tighten the union nut, as this can crack the dielectric sleeve and defeat the galvanic isolation function.