You may also like
79745 Viega ProPress union Smart Connect technology Zero Lead Bronze, 1-1/4'' x 1-1/4''
Manufacturer Resources
Product Specs
- Connection Type:
- P x MPT
- Material Type:
- Bronze
- Product Dimension:
- 1-1/4'' x 1-1/4''
- Department:
- Plumbing
- Product Group:
- Plumbing Fittings
- Product Subgroup:
- Unions
- Product Type:
- Union
- Product Length:
- 1.969"
- Product Height:
- 2.087"
- Product Weight:
- 1.139 lbs
- Product Width:
- 2.118"
- Product Material:
- Bronze
Viega 79745 – Frequently Asked Questions
1) What are the two connection ends on the Viega 79745 ProPress union?
The Viega 79745 is a 1-1/4 inch press by 1-1/4 inch male pipe thread union (P x MPT). One end presses onto 1-1/4 inch copper or copper alloy tube with a ProPress tool, the other threads into a 1-1/4 inch female NPT port such as a valve, pump, or threaded nipple. If you need press on both ends, this is not the fitting for that run.
2) Is the Viega 79745 union approved for potable drinking water?
It is a zero lead bronze body, which is the alloy Viega uses for its potable water ProPress line. Bronze construction also makes it suitable for hydronic heating and chilled water piping on the same copper system.
3) What does Smart Connect do on a Viega ProPress union, and does it mean I can skip pressure testing?
Smart Connect is a small feature in the sealing element that lets water or air escape past an unpressed connection during testing, so an unpressed joint shows itself instead of hiding until the system is loaded. It is a verification aid, not a substitute for the pressure test your inspector requires.
4) Why use a union instead of just a press coupling on a 1-1/4 inch copper line?
A union gives you a disconnect point. A coupling is permanent once pressed, so servicing a pump, water heater, or backflow device means cutting the pipe. The 79745 puts a threaded, breakable joint at that equipment, with the press end joining the copper so no soldering or flame is needed on the tube side.
5) Do I need to use thread sealant on the MPT end of the Viega 79745?
Yes on the threaded side. The male pipe thread end seals the way any NPT joint does, with tape or pipe dope rated for the service. The press end seals on its own EPDM element once crimped, so nothing goes on the tube before pressing except a clean, deburred, fully inserted pipe.
6) How heavy is a 1-1/4 inch ProPress bronze union for support spacing?
Each 79745 union weighs 1.139 lbs. Bronze press fittings in this size are heavier than a copper press coupling, so where several fit together at a piece of equipment, support the assembly rather than letting the tube carry it.
How fast can I get the Viega 79745 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 79745 come with a warranty?
Absolutely. The Viega 79745 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 79745?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Viega 79745 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.