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Bronze straight union press fitting with two 1 in press connections, 3 21/32 in long

Viega

Viega 79135 Bronze Straight Union Press-fit 1 in 3 21/32 in 200 psi 250 °F

SKU CH-0JVT-1XSB5 MPN 79135

Bronze straight union joins 1 in copper tube via press-fit ends, rated 200 psi and 250 °F

  • TypeDrain Components
  • MaterialHAWA
  • Press-fit bronze union installs without soldering or threading
  • 200 psi rating handles high-pressure potable water systems
  • EPDM O-ring seals reliably up to 250 °F
  • Straight 1 in union connects copper tube in tight spaces
  • ASTM B75 and B88 compliance confirms material quality

Bronze Press-Fit Union for Potable Water

This Viega 79135 straight union joins two 1-inch copper tubes using press-fit connections on both ends. The bronze body carries an EPDM O-ring and meets ASTM B75 and ASTM B88 standards for potable-water systems. Maximum operating pressure is 200 psi at temperatures up to 250 degrees F.

Suited for Press-Tool Installations Only

Installers who already own a compatible press tool and need a permanent, flame-free joint will use this fitting. Plumbers who rely on solder, compression or threaded connections cannot use this union without changing their joining method.

1-Inch Press-Fit Ends Determine Compatibility

The union accepts 1-inch copper tube on each side and requires a press tool calibrated for that size. If the piping is a different diameter or uses a different joining system, this fitting will not fit.

Highlights

  • Press-fit bronze union installs without soldering or threading
  • 200 psi rating handles high-pressure potable water systems
  • EPDM O-ring seals reliably up to 250 °F
  • Straight 1 in union connects copper tube in tight spaces
  • ASTM B75 and B88 compliance confirms material quality

Specifications

TypeDrain Components
MaterialHAWA
BrandViega
Model79135

Questions about this item

What press-fit standard does the 79135 straight union follow, and what pressure does it cap at?

The union meets ASTM B75 and ASTM B88 and is rated for a maximum operating pressure of 200 psi.

What copper tube size and overall length must the pipework accommodate for this 1 in bronze union?

It fits 1 in copper tube on both ends and has an overall length of 3 21/32 in.

How is the EPDM O-ring seal made on the 79135, and what step is often missed?

Insert the tube fully to the stop on each press-fit end, then press with a calibrated tool; skipping the full-depth insertion causes leaks.

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