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Viega 20858 ProPress XL copper adapter flange 3 in press-fit connection

Viega

Viega 20858 ProPress XL adapter flange 3 in

SKU CH-XN2J-3YQMZ

Copper press-fit adapter flange joins 3-inch tube to flanged piping for potable water systems up to 200 psi and 250°F

  • Press-fit connection installs without open flame
  • EPDM O-ring seals potable water systems
  • Copper construction meets ASTM B75 and B88
  • Rated for 200 psi at 250 Degrees F
  • 3 in copper tube size fits standard piping

ProPress XL adapter flange 3 in

This Viega 20858 adapter flange connects 3 in copper tube to a flanged joint using a press-fit connection. The copper fitting carries an EPDM O-ring and is rated for potable water systems. It meets ASTM B75 and ASTM B88 standards and is designed for use with compatible Viega press tools.

Installers needing a press-to-flange transition

Suitable for professionals assembling potable water lines where a flanged connection is required. Not intended for applications that demand a threaded, soldered or grooved joint on the tube side, nor for systems exceeding the listed pressure or temperature limits.

Sustained load behaviour at 200 psi

The copper body and EPDM seal maintain integrity under continuous operating pressure up to 200 psi and at temperatures up to 250 Degrees F. Performance remains stable during extended service without the pressure spikes or thermal cycling that can affect lesser-rated fittings.

How it compares

Measured against everything we stock in Hose Fittings, Adapters & Clamps, at today’s prices. Recalculated every night.

Price $242.99
Pricier than about 90% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameViega

Questions about this item

What copper tube size must the pipe be for the 3 in press-fit end of the 20858 adapter flange?

The press-fit connection is sized for 3 in copper tube, matching the fitting's Side A specification.

Will the EPDM O-ring on this flange handle a system that runs at 250 Degrees F and 200 psi?

Yes, the fitting is rated for a maximum operating temperature of 250 Degrees F and a maximum operating pressure of 200 psi.

Which Viega press tool should I use to confirm the 20858 flange is properly crimped?

The fitting is compatible with Viega press tools; after pressing, inspect the bead and verify the O-ring seats evenly around the 3 in copper tube.

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