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Bronze straight press-fit union, 2 in FNPT, 3 15/16 in overall length

Viega

Viega 79725 Bronze Press-Fit 2 in FNPT 2 in Trap

SKU CH-ZZ0N-56WN0 MPN 79725

Bronze press-fit straight union joins 2 in copper tube to 2 in FNPT for potable water systems, rated to 200 psi and 250 °F

  • TypeDrain Components
  • MaterialHAWA
  • Bronze construction resists corrosion for potable water systems
  • Press-fit and FNPT ends join 2 in copper tube to 2 in pipe without threading
  • EPDM O-ring seals reliably up to 250 °F
  • Rated 200 psi maximum operating pressure for demanding installations
  • Meets ASTM B75 and ASTM B88 standards for material quality

Bronze Press-Fit Union for Potable Water

This Viega 79725 straight union joins 2 in copper tubing to a 2 in FNPT threaded connection using a press-fit joint on the tube side. It is intended for installers working on potable-water systems who need a secure, flame-free transition between press and threaded piping.

Rated to 200 psi and 250 Degrees F

The bronze body and EPDM O-ring meet ASTM B75 and ASTM B88 for pressure and temperature performance in hot and cold water service. The press-fit end requires a compatible press tool and jaw; the joint cannot be disassembled or re-pressed once made. Systems exceeding the stated pressure or temperature limits are outside the fitting's certified range.

3 15/16 in Overall Length

The compact straight profile fits tight runs without the bulk of a flanged adapter, and the bronze construction resists dezincification in aggressive water. Because the press end is permanent, installers must confirm alignment and pipe insertion depth before pressing; the threaded FNPT end allows standard pipe dope or tape for the mating connection.

Highlights

  • Bronze construction resists corrosion for potable water systems
  • Press-fit and FNPT ends join 2 in copper tube to 2 in pipe without threading
  • EPDM O-ring seals reliably up to 250 °F
  • Rated 200 psi maximum operating pressure for demanding installations
  • Meets ASTM B75 and ASTM B88 standards for material quality

Specifications

TypeDrain Components
MaterialHAWA
BrandViega
Model79725

Questions about this item

Should I choose the 2 in press-fit or the 2 in FNPT end for my copper pipe?

Both ends are 2 in; Side A uses press-fit for copper tube and Side B uses FNPT threads, so the fitting joins press-fit copper to a threaded pipe without an adapter.

What does the 200 psi rating mean when the fitting is installed?

The bronze body and EPDM o-ring are tested to hold 200 psi at up to 250 °F, so the joint stays sealed under normal potable-water pressure and temperature.

Which standards cover the bronze alloy and the press-fit connection?

The fitting meets ASTM B75 for bronze material and ASTM B88 for copper tube dimensions, confirming alloy quality and press-fit compatibility.

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