Nibco 4803-2-F Female Flush Ad...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$14.19
Nibco 4803-2-F Female Flush Adapter Spg x FIPT - PVC DWV

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

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Model: K177600

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

$14.19
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The PVC DWV female flush 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:
Flush;Reducing Size;Threaded
Product Subgroup:
Adapter
Department:
Plumbing
Product Color:
White
Country Of Origin:
United States

Nibco K177600 – Frequently Asked Questions

1) What does the Nibco 4803-2-F flush adapter connect to on each end?
The 4803-2-F is a spigot by female NPT thread adapter. The spigot end cements into the socket of a PVC DWV fitting, and the female threaded end takes a male-threaded connection such as a trap adapter nipple or a threaded cleanout plug. It is the piece you use to get from a solvent weld system to a threaded one.
2) What pipe sizes does the Nibco 4803-2-F female flush adapter come in?
Three reducing combinations: 1-1/2 inch by 1-1/4 inch, 2 inch by 1-1/2 inch, and 3 inch by 2 inch. Each one steps the thread size down one nominal size from the spigot, so order by the fitting socket you are cementing into first, then confirm the thread matches what you are screwing in.
3) Will this Nibco adapter work with Schedule 40 PVC DWV pipe and fittings?
Yes. It is a Schedule 40 PVC DWV fitting made to ASTM D2665 and D3311, so it mates with standard white Schedule 40 PVC DWV pipe and fittings using solvent cement on the spigot end. It will not solvent weld to ABS.
4) Is this flush adapter certified for potable-adjacent plumbing inspections?
The fitting is certified to NSF/ANSI Standard 14 and is NSF U.P. Certified, which is the listing inspectors look for on plastic DWV systems. That plus the ASTM D2665 and D3311 compliance covers both commercial and residential plumbing work.
5) What is the difference between a flush adapter and a regular female adapter in PVC DWV?
A flush adapter has a spigot end that slips into a fitting socket rather than a hub that receives pipe, so it sits flush inside the fitting instead of adding a hub bulge. That matters in tight framing, inside a closet bend, or where a threaded cleanout has to sit close to the fitting body. A standard hub-type female adapter would need a length of pipe between it and the fitting.
6) Do I need thread sealant on the female NPT side of this PVC adapter?
The threaded side is female NPT, so it needs a sealant rated for plastic threads, usually PTFE tape or a non-hardening pipe dope. Do not overtighten; plastic female threads split. The spigot side is joined with PVC solvent cement per Nibco's plastic fittings installation instructions.
7) What color is the Nibco 4803-2-F and will it match my existing drain lines?
White, which is the standard color for PVC DWV. If your existing waste lines are black, that is ABS and a PVC fitting will not solvent weld to it.
How fast can I get the Nibco K177600 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 K177600 come with a warranty?
Absolutely. The Nibco K177600 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 K177600?
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 K177600 from ZenSupply?
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