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Brass dielectric union with malleable iron nut, half-inch female threaded to solder connection

Watts

Watts 1/2 LF 3001A-1/2 Dielectric Union Trap

SKU CH-ZCWV-1KZSQ MPN 1/2

Connects dissimilar pipes with a brass and malleable iron dielectric union rated for 250 psi and 33 to 180 degrees F

  • TypeDrain Components
  • MaterialBrass, Malleable Iron
  • Prevents galvanic corrosion with brass and zinc-plated steel construction
  • Handles 250 psi maximum operating pressure for reliable performance
  • Operates from 33 to 180 degrees Fahrenheit across temperature ranges
  • Features polysulfone insulator and Buna-N gasket for secure sealing
  • 1/2 inch FIP to solder connection fits standard plumbing systems

Half-Inch Dielectric Union

The Watts 1/2 LF 3001A-1/2 dielectric union joins dissimilar metal piping while preventing galvanic corrosion. Brass, malleable iron and zinc-plated steel components are separated by a polysulfone insulator and a Buna-N gasket. Female threaded and solder connections fit a half-inch line. Rated for 250 psi between 33 and 180 degrees F.

Plumbers and service technicians

This union suits installers who need a code-compliant transition between copper and steel without dielectric breakdown. It is not for technicians who require a larger nominal size or a different end connection such as press-fit or flanged ends. The fixed half-inch configuration cannot serve oversized or reduced bore pipe runs.

250 psi maximum operating pressure

The 250 psi rating at temperatures from 33 to 180 degrees F determines whether this union meets the design pressure of the system. Exceeding either limit risks seal failure or insulator damage. Verify the service conditions against this single figure before specifying the part.

Highlights

  • Prevents galvanic corrosion with brass and zinc-plated steel construction
  • Handles 250 psi maximum operating pressure for reliable performance
  • Operates from 33 to 180 degrees Fahrenheit across temperature ranges
  • Features polysulfone insulator and Buna-N gasket for secure sealing
  • 1/2 inch FIP to solder connection fits standard plumbing systems

Specifications

TypeDrain Components
MaterialBrass, Malleable Iron
BrandWatts
Model1/2 LF 3001A-1/2"

Questions about this item

How often should the Buna-N gasket in the 3001A-1/2 dielectric union be replaced?

Inspect the Buna-N gasket annually and replace it if you see cracking, hardening or any leakage at the joint.

What pressure limit applies when the 3001A-1/2 union runs continuously at 250 psi?

The union is rated for 250 psi maximum operating pressure; sustained use at that pressure is within its design limit.

Will the polysulfone insulator in the 3001A-1/2 union overheat if the water temperature stays at 180 °F all day?

The insulator is rated up to 180 °F, so continuous operation at that temperature is within its specified range.

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