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91645 Viega MegaPress tee Smart Connect technology 316 stainless steel, 1-1/4'' x 1-1/4'' x 1/2''
Manufacturer Resources
Product Specs
- Connection Type:
- P1 x P2 x P3
- Material Type:
- 316 Stainless Steel
- Product Dimension:
- 1-1/4'' x 1-1/4'' x 1/2''
- Department:
- Plumbing
- Product Group:
- Plumbing Fittings
- Product Subgroup:
- Tees
- Product Type:
- Tee
- Product Length:
- 6.535"
- Product Height:
- 2.205"
- Product Weight:
- 1.311 lbs
- Product Width:
- 3.52"
- Product Material:
- 316 stainless steel
Viega 91645 – Frequently Asked Questions
1) What pipe sizes does the Viega MegaPress 91645 tee connect?
The 91645 MegaPress tee is a reducing tee sized 1-1/4 inch x 1-1/4 inch x 1/2 inch, so the run is 1-1/4 inch on both ends and the branch drops to 1/2 inch. All three ends are press connections (P1 x P2 x P3), not threaded or grooved, so each one goes onto pipe and gets crimped with a press tool and the matching jaw or ring for that size.
2) Is the Viega 91645 tee stainless or carbon steel?
It is 316 stainless steel, body and all three press ends. That is the corrosion-resistant grade, so it suits applications where a carbon steel MegaPress fitting would not hold up. Pair it with stainless pipe rather than black iron for a matched system.
3) Can I use this MegaPress tee to take a 1/2 inch branch off a 1-1/4 inch main?
That is exactly what it does. The 1-1/4 inch run passes straight through and the reduced 1/2 inch outlet picks up the branch, so you do not need a full-size tee plus a separate reducer. The branch end is a press connection like the other two, so it crimps with the 1/2 inch jaw.
4) Does the Viega MegaPress tee tell me if I forgot to press a connection?
Yes. The 91645 carries Viega's Smart Connect feature, which leaves an unpressed joint deliberately leaking during pressure testing so an unpressed connection shows itself before the system is put into service. It is a help on a tee like this one, where three separate presses have to be made and the 1/2 inch branch is the easy one to miss.
5) How much clearance do I need to install a 1-1/4 x 1-1/4 x 1/2 MegaPress tee?
Plan around a fitting that measures 6.535 inches long, 3.52 inches wide and 2.205 inches high, and weighs 1.311 lbs. Those outside figures matter more than the nominal size when you are pressing in a joist bay or against a wall, because the press tool jaw needs room to close square around each of the three ends.
6) Should I use a press tee like the Viega 91645 or a threaded tee on a steel line?
A press tee is the choice when you want no cutting oil, no threading and no open flame on the job. The 91645 has three press ends, so you cut the pipe, deburr, mark the insertion depth and crimp. A threaded tee still makes sense where you need to break the joint apart later for service, or where no press tool and jaw for 1-1/4 inch and 1/2 inch is on the truck. On occupied buildings and hot-work-restricted sites, press wins on time and on permits.
7) What part number do I order for the Viega stainless MegaPress 1-1/4 x 1-1/4 x 1/2 tee?
Order Viega 91645. That single number covers the 316 stainless MegaPress tee in 1-1/4 x 1-1/4 x 1/2; there are no finish or seal options to specify on it. The fitting is made in Germany.
How fast can I get the Viega 91645 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 91645 come with a warranty?
Absolutely. The Viega 91645 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 91645?
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