Nibco 4891 Swivel Drum Trap Hu...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$40.77

Nibco 4891 Swivel Drum Trap Hub x Hub x Cleanout with Plug - PVC DWV

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Model: K595250

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

$40.77
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The PVC DWV swivel drum trap features a hub x hub x cleanout with plug connection to provide a means for clearing potential clogs. The drum trap also provides a water seal so that wastewater will automatically be trapped in the configuration, thereby preventing unwanted gases from entering the household environment. 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 Traps
End Connection:
Solvent Weld
Pipe Schedule:
40
Plastic End Connection Type:
Hub x Hub
Product Group:
Fitting
Product Type:
PVC DWV Traps
System Use:
Commercial Plumbing, Residential Plumbing
Type of Trap:
Swivel Drum Trap;with Cleanout;with Plug
Product Subgroup:
Trap
Department:
Plumbing
Product Color:
White
Product Length:
8 in
Product Height:
3.99 in
Country Of Origin:
United States
Product Weight:
1.342 lb
Product Width:
5 in

Nibco K595250 – Frequently Asked Questions

1) Can I snake or clear a clog without cutting out the trap?
That is what the third port is for. The 4891 is a hub x hub x cleanout configuration with a plug, so you back the plug out and rod the trap in place instead of sawing the cemented joints apart. For a property manager with a recurring slow drain, that access is the practical reason to pick a drum trap with a cleanout over a plain trap body.
2) Is a PVC drum trap rated for commercial buildings or residential only?
Both. Nibco lists the 4891 for commercial and residential plumbing, in DWV drain, waste and vent service. It is Schedule 40 PVC and carries NSF/ANSI Standard 14 with NSF U.P. certification, and meets ASTM D2665 and D3311, which is the spec language most institutional submittals ask for on plastic DWV fittings.
3) Will hot water from a dishwasher or laundry line damage a PVC drum trap?
Maximum service temperature on the 4891 is 140 degrees F. Normal fixture and laundry discharge sits under that, but a commercial dish machine or a sanitizing rinse can exceed it, and sustained water above 140 degrees F is outside what this PVC fitting is rated for. Pick a material rated for the higher temperature on those drains.
4) Can I air test a PVC DWV system with this trap installed?
No. Nibco states plainly that these plastic fittings are not to be tested or used with compressed air or other gases. Water test the DWV system instead. This trips up crews who default to an air test on rough-in, and it applies to the whole PVC DWV assembly, not just the trap.
5) Does a drum trap keep sewer gas out the same way a P-trap does?
Yes, it holds a water seal in the drum body, and that standing water is what blocks gases from coming back up into the space. The difference from a P-trap is the volume and the serviceable cleanout: a drum trap holds more water and is rodded through the plug. Check your local code before specifying a drum trap on a new fixture, since many jurisdictions restrict them to repair and replacement work.
6) Why choose PVC over a metal drum trap on a repair?
Corrosion is the reason. PVC will not rust, scale, pit or corrode, which is the usual failure mode on the old metal drum traps being replaced in older housing stock. It is also lighter and goes in with solvent cement rather than sweat or slip joints. The trade-off is the 140 degree F service limit and no compressed air testing.
7) What does swivel mean on the Nibco 4891 drum trap?
The swivel lets you rotate the inlet and outlet hubs relative to the drum, so you can line the 1-1/2 inch connections up with the existing rough-in instead of moving pipe. On a retrofit where the old trap sat at an odd angle under a tub, that adjustment is what saves the job from re-piping.
8) What color is the Nibco 4891 trap, and does it match standard PVC DWV fittings?
White, which is the standard PVC DWV color and matches the Schedule 40 PVC drain fittings already in most systems. If the existing line is black ABS, this will not solvent weld to it, you would need a transition coupling or an ABS trap.
How fast can I get the Nibco K595250 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 K595250 come with a warranty?
Absolutely. The Nibco K595250 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 K595250?
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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