You may also like
The soil adapter features a solder cup and spigot end. The fitting is designed to adapt copper tube to cast iron soil pipe. 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 Adapters
- End Connection:
- Solder
- Metal End Connection Type:
- C x Spigot
- Product Group:
- Fitting
- Product Type:
- Solder DWV Adapters
- System Use:
- Commercial Plumbing, Residential Plumbing
- Product Subgroup:
- Adapter
- Department:
- Plumbing
Nibco E038700 – Frequently Asked Questions
1) How do you connect copper DWV tube to cast iron soil pipe?
That is exactly what the Nibco 805 soil pipe adapter does. One end is a solder cup that takes copper DWV tube, and the other end is a spigot sized to drop into a cast iron soil pipe hub. Solder the copper side, then pack and seal the spigot into the cast iron hub per your local method. It is a drain, waste and vent fitting only, not for pressure water lines.
2) What sizes does the Nibco 805 soil pipe adapter come in?
Five sizes: 1-1/4 in x 2 in, 2 in x 4 in, 3 in, 3 in x 4 in, and 4 in. The two-number sizes are reducing, so 2 in x 4 in takes 2 in copper DWV tube into a 4 in cast iron hub. The 3 in and 4 in are straight size, copper to same-size hub. Match the second number to the cast iron hub you are entering, not to the copper.
3) Can I use the Nibco 805 adapter on a pressurized water line?
No. It is built for drain, waste and vent service, and it is a DWV solder adapter. Pressure copper systems use pressure-rated fittings made to a different standard. If you are tying a copper stack or branch drain into an existing cast iron soil line, this is the right part; for domestic water, it is not.
4) Which Nibco 805 size do I order for 2 inch copper going into a 4 inch cast iron hub?
The 2 in x 4 in, Nibco E038600. On the reducing sizes the first number is the copper solder cup and the second is the cast iron hub the spigot enters. If your copper is 1-1/4 in into a 2 in hub, that is E038300 instead.
5) Is the Nibco 805 adapter cast bronze or wrought copper?
Cast bronze. The body is ASTM B584 alloy C84400 with material and workmanship per ASME B16.23, and it is dezincification resistant, which matters where aggressive water or soil contact is a concern. Wrought copper DWV fittings are stamped from tube; this one is cast, which is why the spigot end can be machined to fit a cast iron hub.
6) What is the part number for the 4 inch Nibco 805 soil pipe adapter?
The straight 4 in is Nibco MPN E038800. The rest of the family: E038300 for 1-1/4 in x 2 in, E038600 for 2 in x 4 in, E038700 for 3 in, and E038750 for 3 in x 4 in. Distributors ordering across a job should note the reducing sizes carry their own numbers rather than a suffix on the straight size.
7) Do I need anything besides the 805 adapter to make the joint to cast iron?
Yes, two separate joints, two separate materials. The copper side needs solder and flux for the cup joint. The spigot side goes into the cast iron hub and needs whatever your jurisdiction accepts for that hub, oakum and lead or a hub gasket. None of that comes with the fitting. Nibco publishes copper fitting installation instructions for the solder side.
8) Will this adapter work on a commercial job or is it residential only?
Both. The 805 soil pipe adapter is listed for commercial and residential plumbing, so it is usable on a multi-family retrofit stack, a school or hospital drain tie-in, and a single family remodel alike. The deciding factor is the size pairing and that the line is DWV, not the building type.
How fast can I get the Nibco E038700 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 Nibco E038700 come with a warranty?
Absolutely. The Nibco E038700 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 Nibco E038700?
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 Nibco E038700 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.