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Bronze press-fit vent elbow with FNPT branch, 90-degree shape, EPDM O-ring

Viega

Viega ProPress vent elbow 1/2" 1/2" 1/8" 79635

SKU CH-37YN-SSAZ2

Bronze ProPress vent elbow joins 1/2 in press-fit copper to 1/2 in FNPT with EPDM seal, rated 200 psi at 250 °F

  • Press-fit connection speeds installation without soldering
  • Bronze body resists corrosion in potable water systems
  • EPDM O-ring seals reliably up to 250 Degrees F
  • 200 psi rating handles typical residential pressure demands
  • 90-degree vent elbow redirects flow in tight spaces

ProPress Vent Elbow 1/2" x 1/2" x 1/8

The Viega ProPress vent elbow 79635 is a 90-degree bronze fitting designed for potable water systems. It connects a 1/2 inch press-fit copper tube on one side to a 1/2 inch FNPT thread on the other. The fitting includes an EPDM O-ring and meets ASTM B75 and ASTM B88 standards. It is rated for 200 psi at 250 degrees F.

Press-Fit Installation

The press-fit connection on Side A requires a compatible press tool and jaw set for copper tubing. No soldering, flux, or open flame is needed for that joint. The FNPT side uses standard pipe thread sealant or tape. Ensure the copper tube is cut square, deburred, and fully inserted before pressing. Misalignment or incomplete insertion can compromise the seal.

Plumbers and Hydronic Installers

This fitting suits professionals installing or repairing potable water lines where a vented 90-degree transition from press copper to female thread is required. It is not intended for gas, oil, or high-temperature steam services beyond the 250 degree F limit. Builders needing a straight coupling, a different thread size, or a non-vented elbow should select another fitting.

Highlights

  • Press-fit connection speeds installation without soldering
  • Bronze body resists corrosion in potable water systems
  • EPDM O-ring seals reliably up to 250 Degrees F
  • 200 psi rating handles typical residential pressure demands
  • 90-degree vent elbow redirects flow in tight spaces

Specifications

BrandVIEGA

Questions about this item

How can I confirm the vent elbow is sealing correctly after pressing it onto the 1/2" copper tube?

Press the fitting with a compatible ProPress tool, then pressurise the system up to 200 psi and inspect the 1/2" FNPT vent port for leaks; the EPDM O-ring and bronze body are rated for 250 °F continuous service.

What comes in the box and what must I supply separately?

The box contains the 90-degree vent elbow (model 79635) with its factory-installed EPDM O-ring; you must provide a ProPress press tool, 1/2" copper tubing, and thread sealant for the 1/2" FNPT connection.

Which fitting should I choose if I need a 90-degree vent elbow for 1/2" copper tube with a 1/8" vent port?

This 79635 model is the only listed version matching 1/2" press-fit by 1/2" FNPT with a 1/8" vent; it meets ASTM B75 and B88 for potable-water systems.

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