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Bronze press-fit straight adapter with FNPT end

Viega

Viega 79340 Bronze Press-Fit 1 1/4 in FNPT 1/2 in Straight Adapter Trap

SKU CH-M6DJ-C21C3 MPN 79340

Bronze press-fit straight adapter connects 1 1/4 inch copper tube to 1/2 inch FNPT for potable water systems rated to 200 psi and 250 Degrees F

  • TypeDrain Components
  • MaterialHAWA
  • Bronze construction resists corrosion in potable water systems
  • Press-fit connection eliminates soldering for faster installation
  • EPDM O-ring provides reliable sealing up to 200 psi
  • Rated for 250 °F maximum operating temperature
  • Meets ASTM B75 and ASTM B88 standards

Press-Fit Bronze Adapter

This Viega 79340 adapter joins a 1 1/4 in press-fit copper tube to a 1/2 in FNPT thread. Bronze construction with an EPDM O-ring suits potable water systems. Rated for 200 psi and 250 Degrees F under ASTM B75 and ASTM B88. Overall length is 1 15/16 in.

Installers needing press-to-thread transitions

Suits plumbers converting press-fit mains to threaded fixture connections in copper piping. Not for installers who require a press-to-press coupling or a larger FNPT outlet. Buyers needing flare, compression or sweat connections should select a different fitting type.

Press-fit to FNPT straight adapter

The defining spec is the press-fit Side A and FNPT Side B combination in a straight bronze body. This determines compatibility with the copper tube and threaded component being joined. Verify both connection types match the installation before purchase.

Highlights

  • Bronze construction resists corrosion in potable water systems
  • Press-fit connection eliminates soldering for faster installation
  • EPDM O-ring provides reliable sealing up to 200 psi
  • Rated for 250 °F maximum operating temperature
  • Meets ASTM B75 and ASTM B88 standards

Specifications

TypeDrain Components
MaterialHAWA
BrandViega
Model79340

Questions about this item

What does the 79340 adapter include and does it need any extra parts to install?

The box contains the straight press-fit adapter with an EPDM O-ring already fitted. A Viega press tool and 1 1/4 in copper tubing are required to complete the connection.

When should I select the 1 1/4 in press by 1/2 in FNPT version instead of another size?

Choose this version when joining 1 1/4 in copper tube to a 1/2 in female pipe thread in a potable water system.

What does the 200 psi rating mean once the fitting is pressed onto the pipe?

The joint will hold up to 200 psi at temperatures up to 250 Degrees F in potable water service.

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