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Bronze dielectric union press-fit by FNPT 1 inch connections EPDM seal overall length two and nine sixteenths inches

Viega

Viega 79165 ProPress dielectric union trap 1 in x 1 in

SKU CH-VT52-8TJ1H MPN 79165

Bronze dielectric union with press-fit and FNPT ends rated for 200 psi and 250 °F

  • Product typeDrain Components
  • Main materialHAWA
  • ProPress press-fit connection installs without open flame
  • Dielectric bronze body separates dissimilar metals to stop galvanic corrosion
  • EPDM O-ring seals potable water up to 200 psi
  • Rated for continuous service at 250 Degrees F
  • Compact 2 9/16 in overall length fits tight spaces

ProPress dielectric union trap

The Viega 79165 is a crimp union fitting designed for potable water systems. It connects a 1 in copper tube on the press-fit side to a 1 in female NPT thread on the other side. The bronze body includes an EPDM O-ring for sealing.

Installers preventing galvanic corrosion

This fitting suits plumbers joining dissimilar metals such as copper to steel in potable water lines up to 200 psi and 250 Degrees F. It is not for installers who need a straight coupling without dielectric separation or a different connection type such as sweat or push-fit.

Press-fit to FNPT transition with dielectric break

The single specification that decides fit is the combined 1 in press-fit by 1 in FNPT configuration with a dielectric union shape. If the piping plan calls for press-to-press, male threads, or a non-dielectric union, this model will not match the required connection.

How it compares

Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.

Price $60.99
Pricier than about 67% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameViega
Model name79165
Product typeDrain Components
Size & build
Main materialHAWA

Questions about this item

How can I confirm the ProPress dielectric union is sealing correctly after pressing the 1 in copper connection?

Press the 1 in copper tube side with a compatible ProPress tool, then pressurise the line up to 200 psi and check for leaks at the joint and the EPDM O-ring.

What components are included with the 79165 and what must be sourced separately?

The fitting comes with the bronze body and installed EPDM O-ring; you must supply the 1 in copper tubing, a ProPress press tool and the matching 1 in FNPT threaded counterpart.

Which specification of the 79165 determines the right choice for my potable-water system?

Select this model when you need a 1 in press-to-FNPT dielectric union rated for 200 psi and 250 °F in potable water applications.

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