Nibco 4861 90-Degree Elbow wit...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$122.30

Nibco 4861 90-Degree Elbow with High Heel Inlet Hub x Hub x Hub - PVC DWV

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Model: K445250

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

$122.30
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The PVC DWV 90-degree elbow with high heel inlet features hub connections and is used to change the direction of flow. 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 Elbows
End Connection:
Slip Joint
Fitting Bend Angle:
90 Deg (1/4 Bend)
Pipe Schedule:
40
Plastic End Connection Type:
Hub x Hub
Product Group:
Fitting
Product Type:
PVC DWV Elbows
System Use:
Commercial Plumbing, Residential Plumbing
Type of Elbow:
Reducing;High Heel Inlet
Product Subgroup:
Elbow
Department:
Plumbing
Product Color:
White

Nibco K445250 – Frequently Asked Questions

1) What is the high heel inlet on the Nibco 4861 elbow used for?
The high heel inlet is the extra side branch cast into the back of the 90 degree bend, so the elbow turns the main drain line and picks up a secondary fixture drain or vent at the same time. It's the fitting plumbers reach for at a closet bend or stack base where a lav or tub arm needs to tie in without adding a separate sanitary tee. All three openings are hub (socket) connections for solvent cemented PVC DWV pipe.
2) Will this Nibco elbow work on a hot water or pressure line?
No. The 4861 is a drain, waste and vent fitting only, with a maximum service temperature of 140 degrees F, and it must never be tested or used with compressed air or other gases. For pressure water service you need a pressure-rated fitting, not DWV.
3) Can I thread this PVC DWV elbow or does it have to be solvent welded?
All three ends on the 4861 are hub sockets, so it joins by solvent cementing PVC pipe into the socket. There are no threaded ports on this fitting. Nibco's PVC DWV line as a whole is joined by solvent cementing or threading, but on this hub x hub x hub configuration, cement is the method.
4) Does the Nibco 4861 elbow meet code for a commercial building drain system?
It's manufactured to ASTM D2665 and D3311, certified to NSF/ANSI Standard 14 and NSF U.P. Certified for potable-adjacent drain, waste and vent use. Nibco lists it for both commercial and residential plumbing systems. Local inspectors generally look for the ASTM D2665 marking on DWV PVC, and it is on this fitting.
5) Can I use this instead of a sanitary tee plus a 90 to pick up a branch drain?
That's the point of it. A high heel inlet elbow combines the 1/4 bend and the branch connection in one body, which saves a joint and the extra pipe length between fittings, useful in a tight joist bay or at a closet bend. Where the branch has to enter at a different elevation or angle than the elbow's heel allows, you're back to a separate sanitary tee and a 90.
6) Will PVC DWV fittings corrode or scale in a waste line over time?
PVC does not rust, scale, pit or corrode, and it holds up well to the chemicals that move through a waste line. That's a large part of why it's specified for DWV over metallic pipe in both commercial and residential work.
How fast can I get the Nibco K445250 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 K445250 come with a warranty?
Absolutely. The Nibco K445250 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 K445250?
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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