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77397 Viega ProPress tee Smart Connect technology Copper, 3/4'' x 1/2'' x 3/4''
Manufacturer Resources
Product Specs
- Connection Type:
- P1 x P2 x P3
- Material Type:
- Copper
- Product Dimension:
- 3/4'' x 1/2'' x 3/4''
- Department:
- Plumbing
- Product Group:
- Plumbing Fittings
- Product Subgroup:
- Tees
- Product Type:
- Tee
- Product Length:
- 1.248"
- Product Height:
- 2.114"
- Product Weight:
- 0.328 lbs
- Product Width:
- 3.642"
- Product Material:
- Copper
Viega 77397 – Frequently Asked Questions
1) What pipe sizes does the Viega 77397 ProPress tee connect?
The Viega 77397 is a reducing copper press tee sized 3/4 inch x 1/2 inch x 3/4 inch. Run ends are both 3/4 inch, and the branch outlet is 1/2 inch, so it is the fitting for teeing a 1/2 inch fixture drop off a 3/4 inch copper run without adding a bushing. All three ends are press connections (P1 x P2 x P3), not sweat or threaded.
2) Can I use the Viega 77397 press tee on PEX or steel pipe?
No. The 77397 is a copper ProPress tee and presses onto copper tube only. For PEX you need Viega's PureFlow press system, and for steel pipe you need MegaPress, which uses a different fitting body and jaw set.
3) Does this Viega copper tee need soldering?
No flame, no solder. All three ends are press connections, so the tee is made up with a press tool and the correct jaw for each size, 3/4 inch on the run ends and 1/2 inch on the branch. That makes it the usual choice for occupied buildings and ceilings where a hot work permit or torch work is a problem.
4) What does Smart Connect mean on the Viega 77397 tee?
Smart Connect is the feature built into the sealing element of the ProPress fitting that lets a small amount of liquid or gas escape at an unpressed connection during testing, so a joint that was missed shows itself before the system is put in service. On a 3/4 x 1/2 x 3/4 tee that matters, because the branch jaw is a different size than the run and is the connection most often skipped.
5) How much room do I need to fit the Viega 77397 tee in a joist bay or wall cavity?
The tee measures 3.642 inches across, 2.114 inches in the other direction, and 1.248 inches on the remaining axis. Plan on clearance beyond that for the press jaw itself, which needs to swing fully around each end. In tight bays the usual fix is to press the branch on the bench before setting the assembly.
6) Is the Viega 77397 tee copper or bronze, and will it match my copper water lines?
The body is copper, so it is the same base metal as the type L or type M copper tube it presses onto. No dissimilar metal transition is introduced at the joint, which is why these are specified on potable copper distribution rather than a brass or bronze reducing tee.
7) Do I need a separate press jaw for the 1/2 inch branch on this tee?
Yes. Press tools work by nominal size, so a 3/4 x 1/2 x 3/4 tee takes a 3/4 inch jaw for the two run ends and a 1/2 inch jaw for the branch. If your tool kit only carries 3/4 inch, the branch cannot be completed.
8) I need the exact part number and weight for a submittal on a Viega 3/4 x 1/2 x 3/4 press tee.
Manufacturer part number is 77397, Viega ProPress copper reducing tee, 3/4 inch x 1/2 inch x 3/4 inch, with Smart Connect. Unit weight is 0.328 lbs. Country of origin is Germany, which is the line procurement groups usually want on a Buy America or origin disclosure review.
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Viega 77397 come with a warranty?
Absolutely. The Viega 77397 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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