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
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:
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Size: 4 in. Spigot x 3 in. Slip (Hub)
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Material: High-quality white PVC (Polyvinyl Chloride)
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Standards Compliance: Meets ASTM D2665 and NSF requirements for DWV systems
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Connection Type:
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Spigot End (4 in.): Fits into a 4-inch DWV hub or fitting
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Slip End (3 in. Hub): Accepts 3-inch DWV pipe
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Application: Designed for non-pressurized drainage, waste, and vent piping
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Durable Construction: Resists corrosion, rust, and most household chemicals
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Installation: Solvent-weld both ends using PVC primer and cement for a watertight seal
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Compact Design: Saves space and fits easily into tight configurations
Typical Applications:
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Reducing a 4-inch drain line to a 3-inch pipe
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Use in bathroom or kitchen drain stacks
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Vent pipe size transitions
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Sewer line conversions in new installations or retrofits
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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 |
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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 |