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79135 Viega ProPress union Smart Connect technology Zero Lead Bronze, 1'' x 1''
Manufacturer Resources
Product Specs
- Connection Type:
- P1 x P2
- Material Type:
- Bronze
- Product Dimension:
- 1'' x 1''
- Department:
- Plumbing
- Product Group:
- Plumbing Fittings
- Product Subgroup:
- Unions
- Product Type:
- Union
- Product Length:
- 1.693"
- Product Height:
- 1.811"
- Product Weight:
- 0.885 lbs
- Product Width:
- 2.244"
- Product Material:
- Bronze
Viega 79135 – Frequently Asked Questions
1) Is the Viega 79135 ProPress union press-by-press on both ends, or does one side thread?
Both ends are press. The 79135 is a P1 x P2 union, meaning a press connection on each side, sized 1 inch by 1 inch. There is no threaded or soldered end on it, so you need a ProPress tool and the correct 1 inch jaw to make up both joints.
2) Will a 1 inch ProPress union work on my 1 inch copper water line?
Yes, for nominal 1 inch copper tube. The 79135 is sized 1 inch on both ends and is a bronze press fitting, so it mates to 1 inch copper tube on each side. It will not adapt sizes, both ends are the same 1 inch.
3) Is the Viega 79135 union safe for potable water?
It is a zero lead bronze body, which is what qualifies a press union for potable water service. Bronze construction also makes it suitable alongside copper tube systems without the dissimilar metal concerns you get with a ferrous fitting.
4) What is Smart Connect on the Viega 79135 union and why does it matter on a pressure test?
Smart Connect is a deliberate feature in the sealing element that lets a small amount of water or air escape past an unpressed joint during testing. On a run made up with 79135 unions, that means an operator who missed a press shows up as a visible leak at test rather than after the wall is closed. It does not replace pressing, it only flags the ones you skipped.
5) Why use a press union instead of just pressing two couplings together?
A union gives you a planned disconnect point. A coupling is permanent, so breaking a pressed line later means cutting it. Putting a 79135 at a pump, water heater, backflow device or meter lets you take that equipment out without cutting tube, and it still presses in seconds on both sides rather than needing thread sealant or heat.
6) How much room do I need around a 1 inch ProPress union to get the jaws on it?
The fitting itself measures 2.244 inches wide, 1.811 inches high and 1.693 inches long, so plan clearance beyond that for the press jaw to close squarely on both ends. In tight joist bays or against a wall, allow for the tool head, not just the fitting body. Each end presses separately, so you need jaw access on both sides.
7) Can I use the 79135 ProPress union on steel or PEX?
No. It is a bronze press fitting with ProPress P1 x P2 ends, intended for copper tube systems. Steel pipe and PEX each need their own fitting system, so for those you would use the matching press range for that material rather than this bronze copper union.
How fast can I get the Viega 79135 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
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 79135 come with a warranty?
Absolutely. The Viega 79135 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 79135?
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installation tips, and troubleshooting. Contact Us
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