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Bronze press-fit tailpiece, 1/2 inch copper tube size, 1 inch FBSP connection, 1 9/16 inch overall length

Viega

Viega 79800 Bronze Press-Fit Tailpiece 1/2" FBSPP 1

SKU CH-JJW8-EVCG3 MPN 79800

Bronze press-fit tailpiece connects 1/2" copper to 1" FBSP, rated 200 psi at 250 °F

  • TypeDrain Components
  • MaterialHAWA
  • Bronze construction resists corrosion for long service life
  • Press-fit connection installs quickly without soldering
  • EPDM O-ring seals reliably up to 250 °F
  • Rated for 200 psi in potable and non-potable water
  • Compact 1 9/16 in length fits tight spaces

Bronze Press-Fit Tailpiece for Plumbing Systems

The Viega 79800 is a bronze press-fit tailpiece designed to connect 1/2 inch copper tubing to a 1 inch FBSP thread in potable and non-potable water installations. It serves plumbers and maintenance teams who need a reliable, flame-free joint for copper piping systems.

Press-Fit Connection with EPDM O-Ring Seal

The fitting uses a press-fit connection on the tube side and a 1 inch FBSP thread on the other, eliminating the need for soldering or threading copper. An EPDM O-ring provides the seal at the press joint, compatible with standard press tools used in commercial and residential plumbing.

Rated for 200 psi and 250 °F Continuous Service

The tailpiece withstands a maximum operating pressure of 200 psi and a maximum operating temperature of 250 degrees Fahrenheit. Bronze construction resists corrosion and maintains joint integrity under sustained pressure and thermal cycling in hot-water recirculation and heating loops.

Highlights

  • Bronze construction resists corrosion for long service life
  • Press-fit connection installs quickly without soldering
  • EPDM O-ring seals reliably up to 250 °F
  • Rated for 200 psi in potable and non-potable water
  • Compact 1 9/16 in length fits tight spaces

Specifications

TypeDrain Components
MaterialHAWA
BrandViega
Model79800

Questions about this item

What does the 200 psi rating mean once this tailpiece is installed in a real plumbing system?

It means the fitting can handle up to 200 psi of continuous operating pressure without leaking or failing, so it is suitable for typical residential and commercial supply lines.

What does the press-fit connection on the 1/2-inch copper side cap in practice?

The press-fit end creates a permanent, leak-tight seal on 1/2-inch copper tube when pressed with the correct jaw, eliminating the need for soldering or threading on that side.

What clearance and pipe size does this 1-9/16-inch bronze tailpiece need to fit?

It requires a 1/2-inch copper tube for the press end and a 1-inch FBSP threaded connection on the other, with an overall installed length of 1-9/16 inches.

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