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The cast bronze DWV tee features solder cups on the run and female NPT thread on the branch. The fitting allows for a connection to be made in continuous pipeline and branch out to a different direction while adapting from a solder connection to a threaded connection. Please refer to NIBCO technical data sheets and catalogs for engineering and installation information. In addition to its inherent qualities of beauty, durability and low maintenance, copper's reusability makes it an ideal application in sustainable projects. NIBCO® copper fittings are manufactured in an ISO 9001 certified facility, and backed by a 50-year limited warranty. Because of its longstanding reputation for innovation and precision in design and manufacturing, NIBCO is the preferred brand in the industry.
Copper Fittings Installation Instructions
- Dezincification resistant
- ASTM B584 Alloy C84400
- Material and workmanship per ASME B16.23
Copper Fittings Installation Instructions
Manufacturer Resources
Product Specs
- All Application(s):
- DWV Drain / Waste / Vent
- All Basic Material:
- Bronze
- Classification:
- Solder DWV Tees
- End Connection:
- Threaded
- Metal End Connection Type:
- C x C x F (NPT)
- Product Group:
- Fitting
- Product Type:
- Solder DWV Tees
- System Use:
- Commercial Plumbing, Residential Plumbing
- Product Subgroup:
- Tee
- Department:
- Plumbing
Nibco E112250 – Frequently Asked Questions
1) What do the three connections on the Nibco 811-14 DWV tee accept?
The 811-14 is a C x C x F tee: solder cups on both ends of the run and a female NPT thread on the branch. So the run sweats onto copper DWV tube and the branch takes a male threaded pipe or nipple. That combination is what lets you stay soldered in a continuous drain line while breaking out to a threaded branch.
2) Can I use this bronze DWV tee on a pressurized water supply line?
No. The 811-14 is a DWV fitting, made for drain, waste and vent service only. Drainage fittings are not intended for pressure piping, so for a potable or pressure branch you want a pressure-rated copper or bronze tee instead.
3) What sizes does the Nibco 811-14 cast bronze DWV tee come in?
Three configurations: 1-1/2 inch, 2 inch, and a reducing 2 x 2 x 1-1/2 inch. The reducer runs 2 inch on the soldered run with a 1-1/2 inch female threaded branch, which is the usual pick for picking up a trap arm or vent off a 2 inch line.
4) What alloy and standard is the Nibco 811-14 tee made to?
Cast from ASTM B584 alloy C84400 and dezincification resistant, with material and workmanship per ASME B16.23. That's the drainage fitting standard, which is why it belongs in DWV lines and not pressure lines.
5) Do I solder this tee before or after threading the branch?
Make the threaded branch connection after soldering, or back the threaded component out while you heat the fitting. Torch heat carried into a joint with tape or pipe dope already in it can damage the sealant. Nibco publishes copper fitting installation instructions covering brazing and soldering practice for these fittings.
6) Is a cast bronze DWV tee okay for commercial work, or is it residential only?
Both. The 811-14 is listed for commercial and residential plumbing, and it's cast bronze rather than wrought copper, which is what gives the branch enough wall thickness to carry female NPT threads.
7) Do I need a dielectric fitting if I thread steel pipe into this bronze tee?
The tee itself is bronze with a female NPT branch, so it threads directly to steel or brass male pipe. Bronze to galvanized steel is a dissimilar-metal joint, so on a wet drainage branch a dielectric union or a brass nipple between the two is the common way to keep galvanic corrosion off the steel.
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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 Nibco E112250 come with a warranty?
Absolutely. The Nibco E112250 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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