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Straight copper press-fit adapter with male NPT end, EPDM O-ring, 4 7/16 in overall length

Viega

Viega ProPress 0911XL Copper Adapter 2-1/2 in

SKU CH-1B3X-FR5C3

Copper press-fit to male NPT adapter for 2-1/2 inch potable water lines, rated 200 psi and 250°F with EPDM seal

  • Press-fit connection saves installation time with no soldering required
  • EPDM O-ring ensures reliable sealing for potable water systems
  • Straight copper adapter joins 2-1/2 in press to 2-1/2 in MNPT threads
  • Rated for 200 psi and 250 °F in demanding plumbing applications
  • Meets ASTM B75 and ASTM B88 standards for copper quality

2-1/2 in Copper Press-Fit Adapter

The Viega ProPress 0911XL is a straight copper adapter that joins a 2-1/2 in press-fit connection to a 2-1/2 in male NPT thread. It is designed for potable water systems where a secure, flame-free joint is required. The EPDM O-ring provides the seal without solder or flux. Installers working to ASTM B75 and ASTM B88 specifications will find it compliant.

Sustained pressure performance

The fitting is rated for a maximum operating pressure of 200 psi and a maximum operating temperature of 250 degrees F. These limits apply continuously rather than only during brief test spikes. The copper body and EPDM seal maintain integrity under long-term thermal cycling in hot water service. No degradation is expected within the stated pressure and temperature envelope.

Thermal and hydraulic behaviour

Copper construction transfers heat efficiently, so the adapter reaches fluid temperature quickly during normal operation. The press joint eliminates the risk of solder voids that can leak under thermal expansion. Pressure drop across the straight-through bore is minimal and does not increase with age. The EPDM O-ring remains stable at the rated 250 degrees F without hardening.

Highlights

  • Press-fit connection saves installation time with no soldering required
  • EPDM O-ring ensures reliable sealing for potable water systems
  • Straight copper adapter joins 2-1/2 in press to 2-1/2 in MNPT threads
  • Rated for 200 psi and 250 °F in demanding plumbing applications
  • Meets ASTM B75 and ASTM B88 standards for copper quality

Specifications

BrandViega

Questions about this item

How much heat can the Viega ProPress 0911XL copper adapter handle when the system runs continuously?

It is rated for a maximum operating temperature of 250 degrees F, so it will withstand normal hot-water circulation all day.

What existing piping must I already have to press this 2-1/2 in adapter onto the line?

You need 2-1/2 in copper tubing that meets ASTM B88 so the press jaws can form a leak-free joint.

Will the EPDM O-ring on this adapter seal reliably against older threaded brass fittings I plan to keep?

Yes, the male NPT threads follow the same 2-1/2 in pipe size, so it mates with legacy brass or steel fittings without leaks.

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