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78197 Viega ProPress coupling No stop Smart Connect technology Copper, 2'' x 2''
Manufacturer Resources
Product Specs
- Connection Type:
- P1 x P2
- Material Type:
- Copper
- Product Dimension:
- 2'' x 2''
- Department:
- Plumbing
- Product Group:
- Plumbing Fittings
- Product Subgroup:
- Couplings
- Product Type:
- Coupling
- Product Length:
- 2.594"
- Product Height:
- 2.594"
- Product Weight:
- 0.604 lbs
- Product Width:
- 3.307"
- Product Material:
- Copper
Viega 78197 – Frequently Asked Questions
1) What is the difference between a ProPress coupling with no stop and one with a stop?
The Viega 78197 is a 2 inch x 2 inch ProPress copper coupling with no stop, meaning there is no internal ridge in the middle of the fitting. The tube can slide all the way through, so you can use it as a repair coupling on an existing run, or slide it along to bridge a cut section without having to spring the pipe apart. A coupling with a stop seats each tube end at a fixed depth and is what you want when you are building new and need a repeatable insertion depth on both sides.
2) What size copper pipe does the Viega 78197 ProPress coupling join?
It joins 2 inch copper tube to 2 inch copper tube, press on both ends (P1 x P2). It is not a reducer, so both sides take the same 2 inch size.
3) Do I need solder or a torch to install a 2 inch ProPress coupling?
No flame, flux, or solder. The 78197 is a press fitting with press ends on both sides, so it is made up cold with a press tool and the correct 2 inch jaw or ring and actuator. That is the main reason crews use it in occupied buildings and tenant spaces where hot work permits are a problem.
4) Can I use the Viega 78197 to repair a section of 2 inch copper already in the wall?
That is what a no-stop coupling is for. Because there is no internal ridge, you can slide the 2 inch coupling fully onto one tube end, bring the second piece in, then slide the coupling back to cover the gap and press both ends. A stop coupling would fight you on a fixed run because you cannot get the insertion depth on both sides without springing the pipe.
5) What does Smart Connect mean on this Viega coupling, and why does it matter on a 2 inch line?
Smart Connect is a feature of the sealing element on the Viega 78197 that lets water or air deliberately escape past an unpressed joint during testing. On a 2 inch main with multiple joints, that is how you find the connection someone missed before the wall closes up, rather than discovering it later.
6) Is the body of the Viega 78197 coupling copper or bronze?
Copper. The 78197 is a copper-bodied ProPress coupling, so it is matched to copper tube systems with no dissimilar metal transition at the joint.
7) How much room do I need around the pipe to press a 2 inch ProPress coupling?
The fitting itself measures 2.594 inches in length, 2.594 inches in height and 3.307 inches in width, and weighs 0.604 lbs. The press tool jaw adds considerably more than that, so in tight joist bays or close to a wall, plan clearance off the tool and ring you are using, not just the coupling body.
8) What part number and manufacturer should I spec for a 2 inch Viega ProPress no-stop copper coupling?
Viega part number 78197. Spec it as a ProPress copper coupling, 2 inch x 2 inch, no stop, with Smart Connect. It is made in Germany.
How fast can I get the Viega 78197 delivered?
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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 78197 come with a warranty?
Absolutely. The Viega 78197 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Viega 78197?
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