4 x 3 in. PVC Schedule-40 DWV Reducing Busher/Bushing/Ring Reducer for Drain, Waste & Vent Pipe Fitting ASTM D2665 NSF 4" Spigot x 3" SLIP/HUB

In stock

SKU
DWV-43-RR-4301
Color
White
  $3.75
Only 339 left

Description / 4 x 3 in. PVC Schedule-40 DWV Reducing Busher/Bushing/Ring Reducer for Drain, Waste & Vent Pipe Fitting ASTM D2665 NSF 4" Spigot x 3" SLIP/HUB

The 247Garden 4 x 3 in. PVC Schedule-40 DWV Reducing Bushing—also known as a busher or reducer ring—is a compact, high-performance fitting designed to reduce a 4-inch drain, waste, and vent (DWV) pipe to a 3-inch hub connection. Built from durable white PVC and engineered to meet ASTM D2665 and NSF standards, this fitting offers a clean and secure transition point in both residential and commercial plumbing systems.

This reducer features a 4-inch spigot end that fits directly into a standard 4-inch DWV hub or fitting and a 3-inch slip (hub) end that accepts standard 3-inch DWV pipe. Its one-piece design eliminates the need for bulky reducing couplings and provides a space-saving solution for vertical stacks, horizontal runs, and branch line transitions.

Ideal for gravity-fed, non-pressurized DWV systems, this reducing bushing is resistant to corrosion, chemicals, and microbial growth—making it suitable for both above-ground and underground installations (when approved by local code). The smooth interior finish promotes better flow, reduces buildup, and supports long-term system reliability.


Key Features:

  • Size: 4 in. Spigot x 3 in. Slip (Hub)

  • Material: High-quality white PVC (Polyvinyl Chloride)

  • Standards Compliance: Meets ASTM D2665 and NSF requirements for DWV systems

  • Connection Type:

    • Spigot End (4 in.): Fits into a 4-inch DWV hub or fitting

    • Slip End (3 in. Hub): Accepts 3-inch DWV pipe

  • Application: Designed for non-pressurized drainage, waste, and vent piping

  • Durable Construction: Resists corrosion, rust, and most household chemicals

  • Installation: Solvent-weld both ends using PVC primer and cement for a watertight seal

  • Compact Design: Saves space and fits easily into tight configurations


Typical Applications:

  • Reducing a 4-inch drain line to a 3-inch pipe

  • Use in bathroom or kitchen drain stacks

  • Vent pipe size transitions

  • Sewer line conversions in new installations or retrofits

  • Residential and commercial DWV systems


Why Choose 247Garden?

247Garden provides premium-grade DWV fittings that meet strict industry standards for quality and reliability. Our 4 x 3 in. Schedule-40 DWV Reducing Bushing is trusted by professionals and DIYers for its precision sizing, ease of use, and long-term durability. Whether you’re tackling a new construction project or upgrading an existing plumbing system, 247Garden fittings are built to perform.


Note:
For use in non-pressurized DWV systems only. Not intended for potable water or pressurized lines. Always consult local plumbing codes before installation. PVC primer and solvent cement sold separately.

More Information

SKU DWV-43-RR-4301
Shipping Weight (Lb) 0.580000
Case Qty 68
GTIN 5061057651084
Country of Manufacture China
Color White
Condition New
Brand 247Garden
PVC Schedule Type DWV
PVC Fitting Size 3", 4", 4" X 3", 4" Spigot x 3" Slip
PVC Fitting Type Bushing, Reducing Ring
PVC Connection Type Spigot x Slip/Socket
PVC Standard ASTM D1784, ASTM D2665, ASTM D3311 and NSF 14
Temperature Rating Max 60℃ /140℉
PVC Certification NSF, ASTM
PVC Applications General Service, Residential Project, Commercial Project, Commercial Plumbing, Sewer/Drainage, HVAC, Ventilation, Air Conditioning, Gravity-Fed Waste System (Non-Pressure)
PVC Features Light Weight, Strong Corrosion Resistance, Beautiful Appearance, Easy Installation, Sanitary/Non-toxic, Easy Assembly & Disassembly, Simple & Easy Maintenance, No Special Tools Required, Apply Solvent Cement for Secure Fit
Prop 65 Warning California Proposition 65 Cancer Warning - www.p65warnings.ca.gov
Product Warnings: DO NOT use this product with compressed air or other gases. DO NOT use this product for any pressure application.
DWV Fitting Type DWV Coupling