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Bronze ProPress adapter with press-fit and threaded ends, EPDM seal

Viega

Viega 79240 ProPress adapter 1 in x 3/4 in trap

SKU CH-93S4-TCRHC MPN 79240

A bronze ProPress adapter joins 1 in press-fit copper tube to a 3/4 in MNPT thread for potable-water lines, rated to 200 psi and 250 Degrees F

  • TypeDrain Components
  • MaterialHAWA
  • Press-fit connection enables fast, flame-free installation
  • Bronze body with EPDM O-ring handles 200 psi at 250 °F
  • Straight adapter joins 1 in press to 3/4 in MNPT
  • Meets ASTM B75 and ASTM B88 for potable water use
  • 2 3/32 in overall length fits tight spaces

ProPress Adapter for Potable Water

The Viega 79240 is a straight crimp adapter designed for potable water systems. It joins a 1 in copper tube press connection to a 3/4 in male NPT thread. The bronze body and EPDM O-ring suit residential and commercial plumbing installations.

Pressure and Temperature Limits

The fitting carries a maximum operating pressure of 200 psi and a maximum operating temperature of 250 Degrees F. These ratings define the safe envelope for hot and cold water distribution. The adapter meets ASTM B75 and ASTM B88 material standards for bronze and copper tube.

Bronze Build and Press-Fit Seal

A bronze body resists corrosion in continuous water contact. The press-fit end creates a permanent, leak-resistant joint without solder or flame when used with the correct tool. The male NPT thread connects to standard threaded valves or equipment. No bolt holes or flange surfaces are present.

Highlights

  • Press-fit connection enables fast, flame-free installation
  • Bronze body with EPDM O-ring handles 200 psi at 250 °F
  • Straight adapter joins 1 in press to 3/4 in MNPT
  • Meets ASTM B75 and ASTM B88 for potable water use
  • 2 3/32 in overall length fits tight spaces

Specifications

TypeDrain Components
MaterialHAWA
BrandViega
Model79240

Questions about this item

Should I choose the 1 in press-fit side or the 3/4 in MNPT side for my copper line?

The adapter joins a 1 in copper tube on the press-fit end to a 3/4 in male NPT thread on the other end; select the end that matches the pipe or fitting you are connecting to.

What does the 200 psi rating mean when the fitting is installed in a potable-water system?

It indicates the maximum continuous operating pressure the bronze body and EPDM o-ring can handle at up to 250 °F in potable-water service.

How do the ASTM B75 and ASTM B88 standards affect the press connection?

They confirm the bronze material and copper tube dimensions meet the specifications required for a reliable ProPress crimp joint.

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