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Bronze straight adapter with press and threaded ends

Viega

Viega ProPress 2911 Bronze Adapter 1/2 x 3/4

SKU CH-89HC-4ZWMA

Connects 1/2" press-fit copper to 3/4" male NPT threads for potable water systems up to 200 psi and 250°F

  • Press-fit connection installs without soldering or threading
  • Bronze body rated for 200 psi and 250 °F potable water
  • EPDM O-ring seals 1/2 in copper to 3/4 in MNPT
  • Meets ASTM B75 and ASTM B88 material standards
  • Straight adapter 1 13/16 in long for tight spaces

Bronze Press-Fit Adapter

The Viega ProPress 2911 is a straight bronze adapter that joins 1/2 inch copper tube to a 3/4 inch male NPT thread. It is designed for potable water systems and uses a press-fit connection on the tube side for fast, flame-free installation.

Press-Fit Installation Limits

The press-fit end requires a compatible ProPress tool and jaw to form a permanent, leak-tight seal without solder or flux. The joint cannot be disassembled or repositioned once pressed, so pipe alignment must be correct before the crimp is made.

200 psi / 250 °F Rating

Maximum operating pressure is 200 psi and maximum operating temperature is 250 degrees F, per ASTM B75 and B88. Systems that exceed either limit need a different fitting rated for higher pressure or temperature.

Highlights

  • Press-fit connection installs without soldering or threading
  • Bronze body rated for 200 psi and 250 °F potable water
  • EPDM O-ring seals 1/2 in copper to 3/4 in MNPT
  • Meets ASTM B75 and ASTM B88 material standards
  • Straight adapter 1 13/16 in long for tight spaces

Specifications

BrandViega

Questions about this item

Which ProPress 2911 adapter fits a 1/2 in copper tube to a 3/4 in MNPT thread?

The 2911ZL bronze adapter is built for that exact transition: press-fit side A takes 1/2 in copper tube and the MNPT side B is 3/4 in pipe.

What does the 200 psi rating mean once the fitting is pressed into a potable-water system?

It certifies the joint will hold up to 200 psi at temperatures up to 250 °F without leaking.

Which standards govern the bronze alloy and the copper tube dimensions?

The bronze meets ASTM B75 and the tube sizing follows ASTM B88.

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