Nibco 4803-2 Female Adapter Sp...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$4.26
Nibco 4803-2 Female Adapter Spg x FIPT - PVC DWV

Nibco 4803-2 Female Adapter Spg x FIPT - PVC DWV

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Model: K026150

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

$4.26
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The PVC DWV female adapter features a spigot x female NPT thread connection and provides a means for adapting a solvent weld connection to a threaded connection. Please refer to NIBCO technical data sheets and catalogs for engineering and installation information. Polyvinyl chloride (PVC) is the most frequently specified of all thermoplastic materials because of its light weight, durability, and cost-effectiveness. PVC DWV is easy to install and is joined by solvent cementing or threading. PVC fittings exhibit high corrosion and chemical resistance and will not rust, scale, pit or corrode. NIBCO® plastic fittings are backed by a 5-year limited warranty. Because of its longstanding reputation for innovation and precision in design and manufacturing, NIBCO is the preferred brand in the industry.

  • Maximum service temperature 140-DegreeF
  • Do not test or use with compressed air or other gases
  • ASTM D2665 and D3311
  • NSF/ANSI Standard 14
  • NSF U.P. Certified

Plastic Fittings Installation Instructions

Manufacturer Resources

Product Specs

All Application(s):
DWV Drain / Waste / Vent
All Basic Material:
PVC - Polyvinyl Chloride
Classification:
PVC DWV Adapters
End Connection:
Threaded
Pipe Schedule:
40
Plastic End Connection Type:
Spg x F
Product Group:
Fitting
Product Type:
PVC DWV Adapters
System Use:
Commercial Plumbing, Residential Plumbing
Type of Adapter:
Threaded;Fitting / Street;Straight Size
Product Subgroup:
Adapter
Department:
Plumbing
Product Color:
White

Nibco K026150 – Frequently Asked Questions

1) What does a Nibco 4803-2 PVC DWV female adapter connect to on each end?
One end is a spigot that cements into the socket of another DWV fitting, and the other is a female NPT thread that takes a male-threaded pipe or fitting. That spigot x FIPT arrangement is how you get from a solvent-welded DWV run to a threaded connection without adding a coupling. Because the spigot is fitting-size rather than a socket, it plugs straight into a hub the same way a length of pipe would.
2) Will a PVC DWV adapter handle hot water from a dishwasher or laundry drain?
Maximum service temperature is 140 degrees F. Normal fixture discharge from a sink, laundry or dishwasher drain falls under that, but a continuous high-temperature discharge from process equipment or a commercial dishwasher booster does not, and that is where PVC DWV gets soft and joints fail. For sustained temperatures above 140 F you need a different material.
3) Does the Nibco 4803-2 meet code for a plumbing inspection?
The adapter is manufactured to ASTM D2665 and D3311, and it carries NSF/ANSI Standard 14 certification along with NSF U.P. certification for drain, waste and vent use. Those are the marks an inspector looks for on the fitting body for DWV work in both commercial and residential systems.
4) What pipe sizes does the Nibco 4803-2 female adapter come in?
Six sizes: 1-1/4, 1-1/2, 2, 3, 4 and 6 inch, ordered as K026000, K026050, K026150, K026250, K026300 and K026450 respectively. All are straight size, so the thread matches the pipe size, there is no bushing-down version in the run.
5) How do I install a PVC DWV spigot x female thread adapter?
The spigot end is solvent cemented into the mating DWV socket. The female NPT end is made up with thread sealant or PTFE tape and hand-tightened plus a turn or two with a strap wrench, no more, since over-torquing a plastic female thread splits the hub. Cement the spigot first and let it set before you wrench on the threaded side, so you are not twisting a green joint.
6) Is the Nibco 4803-2 schedule 40, and will it fit schedule 40 DWV pipe?
Schedule 40 is what the 4803-2 is built to, so the spigot and socket dimensions match standard schedule 40 PVC DWV pipe and fittings in the same nominal size. A 2 inch adapter goes into a 2 inch DWV hub without an intermediate bushing.
7) What is the difference between a female adapter and a male adapter in PVC DWV?
On the 4803-2 female adapter the threads are internal, so it receives a male-threaded pipe nipple, trap adapter or cleanout plug. A male adapter is the mirror image, external threads that screw into a female-threaded fitting or a cast iron hub. Pick the one that leaves the other half of the connection as it already exists on the job. The spigot side of the 4803-2 is fitting size, so if what you have is a plain pipe end rather than a socket, you want a socket x FIPT adapter instead.
8) Will PVC DWV fittings corrode in a commercial building drain system?
PVC will not rust, scale, pit or corrode, which is why it holds up on waste lines carrying detergents, mild chemicals and continuously wet conditions where cast iron scales. That is the main reason it gets specified for repeat-maintenance drainage work in multi-family and commercial buildings.
9) Will a white Nibco PVC adapter match the DWV pipe already in my building?
The 4803-2 is white PVC, which is the standard color for PVC DWV and will match existing white PVC drain lines. If the piping in place is black, that is ABS, and ABS and PVC are different materials that should not be solvent cemented to each other.
How fast can I get the Nibco K026150 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 K026150 come with a warranty?
Absolutely. The Nibco K026150 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 K026150?
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
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