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Bronze 90° press-fit elbow with 3/4" FNPT thread

Viega

Viega 79540 90° Elbow Bronze Press-fit 3/4" FNPT 3/4

SKU CH-XBMQ-3TQY4

A 90-degree bronze press-fit elbow with 3/4-inch FNPT for potable water systems rated to 200 psi and 250 degrees F

  • Press-fit connection installs without soldering tools
  • Bronze body rated for 200 psi operating pressure
  • EPDM O-ring seals up to 250 Degrees F
  • 90-degree elbow redirects flow in tight spaces
  • Meets ASTM B75 and ASTM B88 standards

3/4" Bronze Press-Fit Elbow

The Viega 79540 is a 90-degree elbow adapter made from bronze with an EPDM O-ring. It connects a 3/4-inch press-fit copper tube to a 3/4-inch FNPT thread. The fitting handles potable water applications up to 200 psi and 250 degrees F. It meets ASTM B75 and ASTM B88 standards.

Suits Press-Fit Copper Systems

This elbow suits installers joining 3/4-inch copper tube to female threaded pipe in potable water lines. It is not for use with steel, PEX, or CPVC piping without compatible adapters. Buyers needing a straight coupling, a reducing size, or a sweat connection should select a different fitting.

90-Degree Press-Fit to FNPT

The defining specification is the 90-degree elbow configuration joining a 3/4-inch press-fit end to a 3/4-inch FNPT end. This fixed geometry determines whether the part matches the pipe layout and connection requirements.

Highlights

  • Press-fit connection installs without soldering tools
  • Bronze body rated for 200 psi operating pressure
  • EPDM O-ring seals up to 250 Degrees F
  • 90-degree elbow redirects flow in tight spaces
  • Meets ASTM B75 and ASTM B88 standards

Specifications

BrandVIEGA

Questions about this item

How can I confirm the press-fit connection on the Viega 79540 elbow is properly sealed after pressing?

A correct press creates a permanent mechanical joint; verify the press tool jaws fully closed on the fitting bead and visually inspect that the copper tube is fully inserted to the stop.

What components are included with the Viega 79540 elbow and what must be purchased separately?

The elbow fitting with its factory-installed EPDM O-ring is supplied; copper tubing, a compatible press tool, and thread sealant for the FNPT connection are not included.

Which pressure and temperature ratings should guide my choice of the Viega 79540 elbow for potable water?

The fitting is rated for a maximum operating pressure of 200 psi and a maximum operating temperature of 250 degrees F, meeting ASTM B75 and ASTM B88 standards.

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