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Bronze ProPress union trap with press-fit and FNPT ends

Viega

Viega 79710 ProPress union trap 1 in press-fit x 1 in FNPT bronze EPDM 200 psi 250 °F ASTM B75 B88

SKU CH-BQZV-8G5QG MPN 79710

Bronze press-fit union trap with EPDM seal rated 200 psi and 250 °F for potable water lines

  • Product typeDrain Components
  • Main materialHAWA
  • Bronze construction meets ASTM B75 and B88 standards
  • Press-fit by FNPT union installs without soldering
  • EPDM O-ring seals potable water to 200 psi
  • Rated for continuous service up to 250 °F
  • Straight 1 in union simplifies drain and trap connections

Press-fit bronze union trap

The Viega 79710 ProPress union trap joins 1 in copper tubing to a 1 in female NPT thread using a press-fit connection. Its bronze body and EPDM sealing ring are rated for potable water service up to 200 psi and 250 °F. The fitting meets ASTM B75 and ASTM B88 standards for material quality and dimensional accuracy.

Ideal for copper press systems.

Installers who use ProPress tooling on copper pipe will find this union trap fits directly into their workflow without soldering or threading the copper side. Projects that rely solely on threaded joints or that require a different pipe material on the press side cannot use this fitting.

Connection method decides fit

The defining specification is the press-fit by FNPT straight union configuration; if the piping design calls for press-to-press, press-to-sweat or any other end combination, this part will not suit the assembly.

How it compares

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

Price $47.99
Pricier than about 61% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameViega
Model name79710
Product typeDrain Components
Size & build
Main materialHAWA

Questions about this item

What does the 200 psi rating mean when this union trap is installed in a potable water line?

It indicates the maximum continuous operating pressure the bronze fitting and EPDM seal are designed to handle without leaking or deforming.

How do the ASTM B75 and ASTM B88 standards affect what this press-fit × FNPT union can be used for?

They confirm the bronze body meets the material and dimensional requirements for copper tube and pipe installations in plumbing systems.

What clearance is needed to fit the 2 7/8 in straight union between a 1 in press-fit copper tube and a 1 in FNPT threaded pipe?

The overall length of 2 7/8 in is the space required between the two pipe ends for the union to seat and seal properly.

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