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78077 Viega ProPress reducer Smart Connect technology Copper, 3/4'' x 1/2''
Manufacturer Resources
Product Specs
- Connection Type:
- FTG x P
- Country Of Origin:
- United States
- Material Type:
- Copper
- Product Dimension:
- 3/4'' x 1/2''
- Department:
- Plumbing
- Product Group:
- Plumbing Fittings
- Product Subgroup:
- Reducers
- Product Type:
- Reducer
- Product Length:
- 0.957"
- Product Height:
- 0.957"
- Product Weight:
- 0.097 lbs
- Product Width:
- 2.165"
- Product Material:
- Copper
Viega 78077 – Frequently Asked Questions
1) What does FTG x P mean on the Viega 78077 ProPress reducer?
FTG x P describes the two ends of the Viega 78077. The 3/4 inch end is a fitting-end (FTG), sized like copper tube so it slips into the socket of another press fitting or copper fitting. The 1/2 inch end is a press socket (P) that receives 1/2 inch copper tube and gets crimped with a press tool. So it steps 3/4 inch down to 1/2 inch without needing a coupling in between.
2) Can I use the Viega 78077 reducer on PEX or stainless tubing?
No. The 78077 is a copper press fitting, built for copper tube only. Running it on stainless or PEX is the wrong fitting, those systems use their own ProPress stainless or PureFlow lines with different seals and jaw profiles.
3) Should I order a reducing coupling or this FTG x P reducer to go from 3/4 to 1/2 inch?
Pick based on what the 3/4 inch side is. If you are joining two pieces of tube, you want a reducing coupling with two press sockets. The 78077 has a fitting-end on the 3/4 inch side, so it is the one to use when that side plugs directly into another fitting's socket, an elbow, tee, or valve, with no stub of tube between them. Using the FTG version there saves a joint and about an inch of space.
4) I am branching a 1/2 inch fixture run off 3/4 inch copper, is Viega 78077 the right part?
Yes, if the 3/4 inch side lands in a fitting rather than on tube. Typical use is out of the 3/4 inch outlet of a tee or elbow: the 78077's 3/4 inch fitting-end drops into that socket, and the 1/2 inch press socket picks up the 1/2 inch copper running to the fixture. If instead you are coming off a cut length of 3/4 inch tube, you need a reducer with a 3/4 inch press socket.
5) Do I need a special press tool for a 1/2 inch Viega ProPress fitting?
You press the 1/2 inch socket with a press tool and the matching 1/2 inch ProPress jaw. No torch, flux, or solder, which is why these get used on occupied buildings and tenant spaces where hot work permits are a problem. The 3/4 inch FTG end is not pressed itself, it is inserted into the next fitting's socket and that joint is pressed.
6) What is Smart Connect on this Viega copper reducer?
Smart Connect is Viega's feature that leaves an unpressed fitting leaking a small amount during pressure test, so an installer can spot a connection that was missed before the wall closes up. On a 3/4 x 1/2 inch reducer buried in a joist bay, that is the difference between finding the miss at test and finding it after drywall.
7) Is the Viega 78077 a US-made fitting for a Buy American job?
The 78077 copper ProPress reducer is made in the USA, which is what procurement needs on federal, municipal, and institutional work carrying domestic-content requirements. Order under Viega part number 78077.
How fast can I get the Viega 78077 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 78077 come with a warranty?
Absolutely. The Viega 78077 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 78077?
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