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Brass dielectric union with female NPT and sweat ends

Legend Valve

Legend Valve 301-107NL 1-1/2" FNPT x Sweat T-571NL No Lead Dielectric Union coupling

SKU CH-P6DN-4N7H2

Connects 1-1/2" female NPT to sweat pipe with no-lead dielectric union

  • No-lead construction protects water quality
  • Dielectric union prevents galvanic corrosion
  • 1-1/2" FNPT x Sweat fits standard piping
  • T-571NL model ensures reliable sealing
  • New condition guarantees factory performance

Dielectric union for copper and steel

The Legend Valve 301-107NL joins 1-1/2 inch FNPT threads to a sweat connection, preventing galvanic corrosion between dissimilar metals. Its no-lead construction meets modern potable-water requirements. Installers use it where copper tubing meets steel pipe in residential or commercial plumbing systems.

No-lead compliance and Prop 65 notice

The T-571NL designation confirms the fitting contains no lead, aligning with Safe Drinking Water Act standards. California Proposition 65 warnings indicate the presence of chemicals known to cause cancer and reproductive harm. These regulatory markers inform safe handling and installation practices for professional plumbers.

Brass body with threaded and sweat ends

The brass dielectric union isolates conductive paths through a non-metallic barrier integrated into the coupling. FNPT threads accept standard pipe nipples or adapters while the sweat end solders directly to copper tubing. This combination simplifies transitions in mixed-material piping without additional adapters.

Highlights

  • No-lead construction protects water quality
  • Dielectric union prevents galvanic corrosion
  • 1-1/2" FNPT x Sweat fits standard piping
  • T-571NL model ensures reliable sealing
  • New condition guarantees factory performance

Specifications

BrandLEGEND VALVE

Questions about this item

Will the dielectric union's gasket need periodic replacement to maintain isolation?

The dielectric union uses a non-metallic gasket to separate dissimilar metals; inspect it during routine plumbing checks and replace if it shows cracking or compression set.

What pressure or temperature limit is reached first during continuous hot-water service?

The union is rated for standard residential hot-water pressure and temperature; the sweat joint typically governs the maximum continuous operating temperature.

How much heat does the brass body transfer to adjacent piping during all-day circulation?

Brass conducts heat readily, so the union body will reach near water temperature; insulate the joint if surface heat must be limited.

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