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The PVC DWV P-Trap features a union joint and a hub x slip joint connection. The P-Trap provides a water seal so that wastewater will automatically be trapped in the arc of 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.
Plastic Fittings Installation Instructions
- 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:
- Slip Joint
- Pipe Schedule:
- 40
- Plastic End Connection Type:
- Hub x SJ
- Product Group:
- Fitting
- Product Type:
- PVC DWV Traps
- System Use:
- Commercial Plumbing, Residential Plumbing
- Type of Trap:
- P-Trap;with Union Joint
- Product Subgroup:
- Trap
- Department:
- Plumbing
- Product Color:
- White
- Product Length:
- 6.88 in
- Product Width:
- 5.84 in
- Country Of Origin:
- United States
Nibco K600350 – Frequently Asked Questions
1) Will the Nibco 4892 P-trap connect to 1-1/2 inch PVC drain pipe, and is there a version for a 1-1/4 inch tailpiece?
Two sizes are built: a straight 1-1/2 inch trap (MPN K600350) and a 1-1/2 x 1-1/4 inch (MPN K600500) for where the fixture tailpiece is the smaller 1-1/4 inch. Both are Hub x SJ, so the hub side solvent cements onto Schedule 40 PVC DWV pipe and the slip joint side takes a nut and washer at the tailpiece.
2) What does the union joint on the Nibco 4892 PVC trap actually do for me on a service call?
The union nut lets you break the trap apart at the bend without cutting pipe or disturbing the cemented hub connection. That is the difference between this and a one-piece solvent-weld trap: you can pull the U to clear a stoppage or retrieve something dropped down the drain, then reassemble. It is a P-trap with union joint, so the fixture side stays a slip joint and the drain side stays permanent.
3) Can I use the Nibco 4892 PVC P-trap on a commercial job, or is it residential only?
Both. It is listed for commercial and residential plumbing, in DWV drain, waste and vent service, and it carries NSF/ANSI Standard 14 and NSF U.P. certification with ASTM D2665 and D3311 compliance. For a facility spec sheet that is usually the set of marks an inspector wants to see on a plastic DWV fitting.
4) Is a PVC P-trap OK under a commercial kitchen or lab sink that sees hot water?
Maximum service temperature on this PVC trap is 140 degrees F. Ordinary hot water at a lavatory or a residential kitchen sink is fine. A dishwashing station, a sterilizer, or any drain that dumps water hotter than 140 F is past the material's rating, and so is a lab waste line running aggressive solvents. Also never pressure test it with compressed air or any gas, it is a drainage fitting only.
5) What is the difference between a hub x slip joint trap and a slip x slip trap, and which do I want?
Hub x SJ means one end is a solvent cement socket and the other is a slip joint. Use it where the trap arm ties permanently into a cemented PVC DWV branch and the only serviceable connection is up at the fixture tailpiece. If you are working on an existing stub-out with a trap adapter already in the wall, or you need the whole assembly to come apart by hand, you want a slip joint on both ends instead. Once the hub end on the 4892 is cemented, that joint is permanent.
6) Do I need anything besides the Nibco 4892 trap to finish the connection?
You will need PVC solvent cement and primer for the hub end, and a slip joint nut and washer at the fixture end if the tailpiece does not already have them. The trap itself is the body plus the union nut. On the 1-1/2 x 1-1/4 combination (K600500) confirm the tailpiece is the 1-1/4 inch size before you set the washer.
7) Will a PVC trap corrode or scale like the chrome tubular trap I am replacing?
No. PVC will not rust, scale, pit or corrode, and it resists chemicals, which is why it outlasts thin-wall chromed brass under a hard-water or high-use fixture. The trade-off is the 140 degree F ceiling and that it is white, not chrome, so it is not the choice for an exposed pedestal sink where the trap is visible.
8) Why does a P-trap need to hold water, and does the union version still seal properly?
The arc of the trap holds a water seal that blocks sewer gas from coming back up through the fixture drain. The union joint on the 4892 does not change that, it just gives you a mechanical break point in the bend. Assemble the union nut fully so the seal holds; a partly tightened union is the usual reason a serviced trap starts venting odor.
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Does the Nibco K600350 come with a warranty?
Absolutely. The Nibco K600350 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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