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Bronze ProPress di-electric union with press-fit and FNPT ends

Viega

Viega 79160 ProPress di-electric union trap

SKU CH-VZTG-2S5Q3 MPN 79160

Bronze di-electric union connects 3/4 in press-fit copper to 3/4 in FNPT for potable water systems

  • TypeDrain Components
  • MaterialHAWA
  • Corrosion-resistant bronze body extends service life
  • EPDM O-ring seals reliably up to 250 Degrees F
  • Press-fit connection installs without soldering or flame
  • Di-electric design prevents galvanic corrosion between metals
  • Rated for 200 psi maximum operating pressure

ProPress dielectric union for potable water

The Viega 79160 connects 3/4 inch copper tube to 3/4 inch FNPT using a press-fit joint on one side and a threaded connection on the other. It is designed for potable water systems where dissimilar metals must be isolated to prevent galvanic corrosion. Installers who need a flameless, solder-free connection on copper will find this fitting suitable.

Rated for 200 psi and 250 degrees F

The bronze body with an EPDM O-ring handles continuous operating pressure up to 200 psi and temperatures up to 250 degrees F. Press installation eliminates open flame, reducing fire risk and speeding up work on occupied sites. The dielectric construction breaks the electrical path between copper and threaded steel or iron pipe.

Supplied as a single fitting with integrated O-ring

No separate gaskets, solder, flux or threading compound are required for the press end. The EPDM seal is factory-fitted, so the installer only needs a compatible press tool and jaws. Buyers who need a flanged connection, a different tube size or a union without dielectric isolation must select another model.

Highlights

  • Corrosion-resistant bronze body extends service life
  • EPDM O-ring seals reliably up to 250 Degrees F
  • Press-fit connection installs without soldering or flame
  • Di-electric design prevents galvanic corrosion between metals
  • Rated for 200 psi maximum operating pressure

Specifications

TypeDrain Components
MaterialHAWA
BrandViega
Model79160

Questions about this item

How do I install the 3/4" press-fit end and which step is most often missed?

Press the 3/4" copper tube into the press-fit side using a ProPress tool until the tool completes its full cycle; the step most often missed is fully seating the tube before pressing.

What maintenance or replacement will the EPDM O-ring need later?

The EPDM O-ring should be inspected during routine system checks and replaced if it shows cracking, hardening, or leakage.

What is the first limit reached under sustained hot-water use?

The 250 Degrees F maximum operating temperature is the first limit reached under sustained hot-water use.

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