Nibco 4851-4 Closet Flange MIP...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$13.94
Nibco 4851-4 Closet Flange MIPT - PVC DWV

Nibco 4851-4 Closet Flange MIPT - PVC DWV

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Model: K355330

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

$13.94
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The PVC DWV closet flange features a male NPT thread connection. The closet flange is secured to the floor of the dwelling so that a toilet can be affixed to it and allow for a pipe connection (under the floor) to continue the piping for evacuation of the used water. 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 Closet Flanges
End Connection:
Solvent Weld
Pipe Schedule:
40
Plastic End Connection Type:
M (NPT)
Product Group:
Fitting
Product Type:
PVC DWV Closet Flanges
System Use:
Commercial Plumbing, Residential Plumbing
Product Subgroup:
Closet Flange
Department:
Plumbing
Product Color:
White
Product Length:
7 in
Product Weight:
0.668 lb
Product Width:
7 in
Country Of Origin:
United States
Product Height:
2.45 in

Nibco K355330 – Frequently Asked Questions

1) What size pipe does the Nibco 4851-4 PVC DWV closet flange connect to?
The Nibco 4851-4 is a 4 inch by 3 inch closet flange, so it serves a 4 inch closet opening over a 3 inch line. It is Schedule 40 PVC DWV, and the pipe side is a male NPT thread, so it screws into a female-threaded DWV fitting rather than gluing onto plain pipe.
2) Can I use a PVC closet flange on a commercial restroom job?
Yes. The 4851-4 is listed for both commercial and residential plumbing service, and it is made to ASTM D2665 and D3311 with NSF/ANSI Standard 14 certification and NSF U.P. certification, which is what most commercial drainage specs call for on PVC DWV fittings.
3) Does the Nibco 4851-4 closet flange come with closet bolts or floor screws?
The 4851-4 is the flange only. Closet bolts, floor anchors into the subfloor or slab, the wax ring or foam seal, and the thread sealant or PTFE tape for the male NPT joint are all bought separately.
4) What is the maximum temperature a PVC DWV closet flange can take?
140 degrees F is the maximum service temperature for this PVC fitting. That covers normal toilet waste and gray water. It should never be tested or used with compressed air or other gases.
5) Will a PVC closet flange corrode or rust in a slab installation?
No. PVC will not rust, scale, pit or corrode, and it holds up to chemical and corrosive drainage, which is why it is commonly chosen over cast iron flanges for slab and remodel work. The 4851-4 body is white PVC.
6) What is the Nibco 4851-4 part number for ordering?
The Nibco 4851-4 closet flange in the 4 inch by 3 inch size carries manufacturer number K355330.
How fast can I get the Nibco K355330 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 K355330 come with a warranty?
Absolutely. The Nibco K355330 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 K355330?
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 K355330 from ZenSupply?
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