Nibco 903-7 DWV Trap Adapter F...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$51.07
Nibco 903-7 DWV Trap Adapter F x SJ - Wrot

Nibco 903-7 DWV Trap Adapter F x SJ - Wrot

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Model: H027050

In Stock (leaves warehouse same day if ordered before 3pm ET)

$51.07
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The trap adapter features a female NPT thread and a slip joint connection. The fitting provides a means for adapting a threaded connection to a slip joint 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.

  • Dezincification resistant
  • ASTM B75 Alloy C12200
  • Material and workmanship per ASME B16.29

Copper Fittings Installation Instructions

Manufacturer Resources

Product Specs

All Application(s):
DWV Drain / Waste / Vent
All Basic Material:
Copper
Classification:
Solder DWV Adapters
End Connection:
Threaded
Metal End Connection Type:
F x SJ
Product Group:
Fitting
Product Type:
Solder DWV Adapters
System Use:
Commercial Plumbing, Residential Plumbing
Type of Adapter:
Threaded;Trap
Product Subgroup:
Adapter
Department:
Plumbing
Country Of Origin:
United States

Nibco H027050 – Frequently Asked Questions

1) What does the Nibco 903-7 trap adapter connect to on each end?
The Nibco 903-7 is an F x SJ trap adapter: one end is a female NPT thread, the other is a slip joint connection. It lets you go from a threaded drain connection to a slip joint tailpiece or trap arm. Both ends are integral to the fitting, so nothing solders on this particular configuration.
2) What sizes does the Nibco 903-7 DWV trap adapter come in?
Three: 1-1/4 inch (MPN H027000), 1-1/2 inch (H027050), and a 1-1/2 inch by 1-1/4 inch reducing version (H027100). The reducing size is the one to grab when a 1-1/2 inch drain has to pick up a 1-1/4 inch lavatory trap.
3) Can I use a Nibco 903-7 trap adapter on a pressure water line?
No. The 903-7 is a DWV fitting, intended for drain, waste and vent service only. A slip joint end is not a pressure connection. For supply piping you need a pressure-rated wrot copper adapter, not a DWV trap adapter.
4) I have a 1-1/2 inch DWV stub and a 1-1/4 inch lavatory trap. Which Nibco 903-7 do I order?
Order the 1-1/2 inch by 1-1/4 inch version, MPN H027100. It carries the larger thread on the drain side and the smaller slip joint for the trap, so you do not have to stack a separate reducing bushing into the joint.
5) Is the 903-7 trap adapter approved for commercial jobs or just residential?
Both. The 903-7 is listed for commercial and residential plumbing systems, and it is made to ASME B16.29 for material and workmanship, which is the wrought copper solder-joint DWV fitting standard specifiers usually call out on drawings.
6) What is the Nibco 903-7 trap adapter made of, and will it hold up in aggressive water?
Copper, specifically ASTM B75 alloy C12200, and Nibco states the fitting is dezincification resistant. That matters where brass trap adapters have failed on you: there is no zinc to leach out of C12200 copper.
7) Do I need a washer and nut for the slip joint end of the 903-7?
Yes. The slip joint side of the 903-7 is a plain connection made up with a slip nut and washer, which are ordinarily supplied with the trap or tailpiece being connected. The threaded side is female NPT, so plan on thread sealant or PTFE tape and a male threaded nipple or drain outlet on the other side.
8) Is a copper trap adapter worth it on a green building project?
Copper is reusable at end of life, which is why Nibco calls out copper fittings for sustainable projects, and the 903-7 is made in an ISO 9001 certified facility. For LEED-style material documentation the alloy call-out is ASTM B75 C12200.
How fast can I get the Nibco H027050 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 H027050 come with a warranty?
Absolutely. The Nibco H027050 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 H027050?
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 H027050 from ZenSupply?
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