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The PVC DWV 45-degree double wye features all hub connections and allows for a connection to be made in continuous pipeline and branch out to different directions. 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 Y's (Wyes)
- End Connection:
- Solvent Weld
- Fitting Bend Angle:
- 45 Deg (1/8 Bend)
- Pipe Schedule:
- 40
- Plastic End Connection Type:
- Hub x Hub x Hub
- Product Group:
- Fitting
- Product Type:
- PVC DWV Y's (Wyes)
- System Use:
- Commercial Plumbing, Residential Plumbing
- Product Subgroup:
- Y (Wye)
- Department:
- Plumbing
- Product Color:
- White
- Country Of Origin:
- United States
Nibco K265450 – Frequently Asked Questions
1) Will a Nibco 4834 double wye glue onto Schedule 40 PVC DWV pipe?
Yes. The 4834 double wye is a Schedule 40 PVC DWV fitting with solvent weld hub ends, so it cements straight onto standard Schedule 40 PVC DWV pipe of the matching size. No threading, no gaskets, no transition adapter needed. All three inlet ports plus the run are hub, so every joint on the fitting is a solvent weld connection.
2) How hot can the waste be through a Nibco PVC DWV wye? Will a dishwasher or commercial kitchen discharge damage it?
Maximum service temperature is 140 degrees F. Normal residential dishwasher and laundry discharge falls under that. Sustained higher-temperature discharge, commercial dish machines, boiler blowdown, sterilizer or lab waste, is outside what PVC DWV is rated for, and that is where a specifier moves to CPVC or another high-temperature drainage material.
3) Does the Nibco 4834 wye meet the standards an inspector will look for on a DWV system?
It is manufactured to ASTM D2665 and D3311, and it carries NSF/ANSI Standard 14 with NSF U.P. certification. D2665 is the PVC DWV pipe and fitting standard and D3311 covers DWV fitting patterns, so the fitting geometry itself is to the drainage pattern standard rather than a generic socket fitting.
4) Can I connect two smaller fixture branches to a 4 inch or 6 inch main without using bushings?
Yes, order the reducing configuration. On a 4 inch run you can take 3 inch branches (K266000) or 2 inch branches (K266050). On a 6 inch run the reducing version brings in two 4 inch branches (K266200). The reduction is built into the fitting, so you glue the branch pipe straight into the hub with no bushing stacked in the socket.
5) What sizes does the Nibco 4834 PVC double wye come in, including reducing configurations?
Eleven configurations. Straight sizes are 1-1/2, 2, 3, 4 and 6 inch. Reducing versions are 2 x 2 x 1-1/2 x 1-1/2, 3 x 3 x 2 x 2, 3 x 3 x 1-1/2 x 1-1/2, 4 x 4 x 3 x 3, 4 x 4 x 2 x 2, and 6 x 6 x 4 x 4. The reducing versions let you pick up two smaller branch lines off a larger run without adding bushings at the fitting.
6) Should I use a double wye or two separate single wyes to bring two branches into one drain line?
A double wye picks up branches from both sides at the same point on the run, which is what you want when two fixture groups sit opposite each other, back-to-back baths or a pair of stacked units. Two single wyes need vertical or horizontal separation along the run and more pipe between them. The 4834 is a 45 degree (1/8 bend) pattern on both branches, so flow enters the main line at a sweep rather than a hard tee, which is what drainage code work generally calls for on the horizontal.
7) Do I need any extra parts or a special tool to install a solvent weld PVC double wye?
Nothing mechanical. Hub ends take PVC primer and solvent cement, which is the only consumable required. There are no rings, gaskets or nuts to order alongside it. Nibco publishes plastic fittings installation instructions covering the joining procedure, and their technical data sheets carry the engineering detail for the run.
8) How do I order the right Nibco 4834 for a 3 inch drain with two 2 inch branches?
That is the 3 x 3 x 2 x 2 configuration, MPN K265800. The size call-out reads run x run x branch x branch, so the first two figures are the main line through the fitting and the last two are the two branch inlets. If both branches are 1-1/2 inch off a 3 inch run instead, that is K265850. Straight 3 inch all around is K265700.
9) Are the ends on the Nibco 4834 threaded, or do I need a female adapter to tie into threaded pipe?
All ends are hub sockets, hub x hub x hub, sized to take pipe OD for solvent cementing. There are no threads on the fitting. To land a threaded connection at that point you would add a separate PVC DWV male or female adapter of the matching size and cement it into the wye hub.
10) Is the Nibco 4834 double wye approved for commercial buildings or just houses?
Both. It is listed for commercial and residential plumbing, and the size range backs that up: 1-1/2 and 2 inch for fixture branches, 3 and 4 inch for stacks and building drains, 6 inch for larger commercial mains. For a property manager standardizing across a portfolio, the same white PVC DWV fitting family covers apartment fixture work and the main line.
11) Will PVC DWV fittings corrode or scale in a waste line the way cast iron does?
PVC will not rust, scale, pit or corrode, and it holds up against chemical attack in waste service. That is the practical reason it replaces cast iron and galvanized on drain retrofits: no interior scale buildup narrowing the line over time, and no rust at the joints.
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Does the Nibco K265450 come with a warranty?
Absolutely. The Nibco K265450 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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