Reducing Wye, PVC Schedule 40 6" x 4" (475-532)
$176.01
The 6" x 4" PVC Schedule 40 Reducing Wye (475-532) is a 45-degree branch fitting that introduces a 4" outlet into a 6" pipeline run with the smooth, angular flow transition that distinguishes a wye from a standard tee configuration. By positioning the branch at 45 degrees rather than 90 degrees to the main run, the reducing wye produces significantly lower turbulence, reduced head loss, and a more gradual directional change at the junction — advantages that matter most in drainage, gravity-flow, and high-velocity systems where abrupt branch geometry creates flow restriction, solids accumulation, or erosion at the fitting body.
The size reduction from a 6" run to a 4" branch in a single fitting eliminates the need to install a full-size 6" wye followed by a separate 6"x4" reducer — consolidating two fittings into one, reducing installed joint count, and simplifying both the hydraulic design and the physical installation at the branch point. This single-component approach is especially practical in below-grade or confined installations where fitting footprint, burial depth, and joint access are constrained.
Manufactured from white PVC compound meeting ASTM D2466 dimensional standards, the 475-532 delivers the corrosion resistance, chemical inertness, lightweight handling, and long service life that make Schedule 40 PVC the dominant material for drainage, irrigation, and low-to-medium pressure process piping at this diameter range. The fitting accepts solvent cement on all three ports for a permanent, full-strength bond across the run and branch connections.
Specifications:
| Specification | Details |
|---|---|
| Part Number | 475-532 |
| Material | PVC (Polyvinyl Chloride) |
| Schedule | Schedule 40 |
| Pressure Rating | 180 PSI @ 73°F (6") / 220 PSI @ 73°F (4") |
| Branch Angle | 45 Degrees |
| Connection Type | Slip x Slip x Slip (Socket) |
| Run Size | 6" |
| Branch Size | 4" |
| Fitting Standard | ASTM D2466 |
| Joining Method | Solvent Cement (IPS Weld) |
| Temperature Rating | Up to 140°F (60°C) |
| Color | White |
| NSF Listed | NSF/ANSI 61 (potable water) |
Use solvent cement appropriate for the pipe and fitting schedule. Heavy-bodied cement is recommended for socket joints at 4" and above. Allow full cure time before pressurizing or backfilling. Pressure-temperature derating applies at elevated service temperatures per ASTM standards.
Industries & Applications:
- Municipal & Residential Drainage — Gravity sewer, storm drain, and sanitary lateral systems requiring a 4" branch takeoff from a 6" trunk main with smooth flow transition to minimize solids settling and blockage risk at the junction
- Agricultural & Landscape Irrigation — 6" mainline distribution systems with 4" branch drops to sub-main headers, zone valve stations, or lateral distribution manifolds where low head loss at the branch preserves system pressure balance
- Industrial Process & Drainage Piping — Process waste, floor drain collection, and effluent conveyance systems requiring a reducing branch junction with minimal turbulence in gravity or low-pressure flow conditions
- Water & Wastewater Treatment — Plant drainage headers, backwash discharge lines, and gravity return systems where a 4" branch takeoff from a 6" collection main is required with smooth hydraulic transition
- Stormwater Management & Site Drainage — Underground stormwater collection networks requiring a 4" lateral branch junction off a 6" trunk pipe with reduced flow disruption in high-volume runoff conditions
- Swimming Pool & Aquatic Facility Piping — Main drain return and circulation piping where a reducing wye provides smooth branch flow for balanced hydraulic distribution across multiple circuits
- Industrial Ventilation & Exhaust Ducting — Low-pressure air handling and fume exhaust systems where PVC Schedule 40 is specified and a 45-degree reducing branch minimizes turbulent pressure drop at the junction
- Aquaculture & Hatchery Systems — Gravity-fed or low-pressure recirculation and drainage networks requiring a 4" branch reduction off a 6" main collection or distribution header
(No reviews yet)
Write a Review
Reducing Wye, PVC Schedule 40 6" x 4" (475-532)
Technical Specifications
The 6" x 4" Reducing Wye PVC SCH 40 (Part #475-532) is a white Schedule 40 PVC fitting designed for efficient pipe size transitions in non-pressurized systems. It features a reducing wye profile with Socket x Socket x Socket connections, allowing a smooth branch from a 6-inch main line into a 4-inch run. Compliant with ASTM D1784 standards, this product delivers reliable performance in drainage and DWV applications.
Typical Applications
This 6x4 PVC wye is commonly seen in plumbing systems that require controlled flow direction and size reduction. Top applications include:
- DWV fittings used in drain, waste, and vent systems
- Sewer, stormwater, and drain pipe layouts
- Commercial and residential plumbing installations
- Industrial non-pressure piping systems
- Irrigation and water management applications
As a reducing wye, this fitting allows branching from a larger main line into a smaller downstream pipe while maintaining smoother flow than standard tees. That’s why it’s widely used by professional plumbers, contractors, facility managers, and experienced DIYers who need dependable PVC DWV fittings for complex drainage designs.
Installation & Handling Tips
Designed for solvent-weld installation using standard PVC primer and cement, this fitting uses a Slip connection type with Socket x Socket x Socket ends on all three openings. For the best results, follow these best practices:
- Dry-fit all pipe fittings before cementing
- Apply primer and cement evenly for full coverage
- Align piping carefully to maintain proper flow direction
Slip connections create strong, leak-resistant joints and support long-term performance in both buried and exposed plumbing systems.
Why Choose Maxx Supply?
Maxx Supply is a trusted supplier of high-quality PVC pipe fittings and plumbing accessories. Customers choose us for:
- Consistent product quality and dependable specifications
- Competitive pricing for plumbers, contractors, and facility managers
- Reliable inventory with fast order fulfillment
- A full selection of PVC pipe, fittings, primers, cements, and repair products
From sourcing a single fitting to outfitting an entire plumbing system, Maxx Supply provides the products and support professionals rely on.
The 6" x 4" PVC Schedule 40 Reducing Wye (475-532) is a 45-degree branch fitting that introduces a 4" outlet into a 6" pipeline run with the smooth, angular flow transition that distinguishes a wye from a standard tee configuration. By positioning the branch at 45 degrees rather than 90 degrees to the main run, the reducing wye produces significantly lower turbulence, reduced head loss, and a more gradual directional change at the junction — advantages that matter most in drainage, gravity-flow, and high-velocity systems where abrupt branch geometry creates flow restriction, solids accumulation, or erosion at the fitting body.
The size reduction from a 6" run to a 4" branch in a single fitting eliminates the need to install a full-size 6" wye followed by a separate 6"x4" reducer — consolidating two fittings into one, reducing installed joint count, and simplifying both the hydraulic design and the physical installation at the branch point. This single-component approach is especially practical in below-grade or confined installations where fitting footprint, burial depth, and joint access are constrained.
Manufactured from white PVC compound meeting ASTM D2466 dimensional standards, the 475-532 delivers the corrosion resistance, chemical inertness, lightweight handling, and long service life that make Schedule 40 PVC the dominant material for drainage, irrigation, and low-to-medium pressure process piping at this diameter range. The fitting accepts solvent cement on all three ports for a permanent, full-strength bond across the run and branch connections.
Specifications:
| Specification | Details |
|---|---|
| Part Number | 475-532 |
| Material | PVC (Polyvinyl Chloride) |
| Schedule | Schedule 40 |
| Pressure Rating | 180 PSI @ 73°F (6") / 220 PSI @ 73°F (4") |
| Branch Angle | 45 Degrees |
| Connection Type | Slip x Slip x Slip (Socket) |
| Run Size | 6" |
| Branch Size | 4" |
| Fitting Standard | ASTM D2466 |
| Joining Method | Solvent Cement (IPS Weld) |
| Temperature Rating | Up to 140°F (60°C) |
| Color | White |
| NSF Listed | NSF/ANSI 61 (potable water) |
Use solvent cement appropriate for the pipe and fitting schedule. Heavy-bodied cement is recommended for socket joints at 4" and above. Allow full cure time before pressurizing or backfilling. Pressure-temperature derating applies at elevated service temperatures per ASTM standards.
Industries & Applications:
- Municipal & Residential Drainage — Gravity sewer, storm drain, and sanitary lateral systems requiring a 4" branch takeoff from a 6" trunk main with smooth flow transition to minimize solids settling and blockage risk at the junction
- Agricultural & Landscape Irrigation — 6" mainline distribution systems with 4" branch drops to sub-main headers, zone valve stations, or lateral distribution manifolds where low head loss at the branch preserves system pressure balance
- Industrial Process & Drainage Piping — Process waste, floor drain collection, and effluent conveyance systems requiring a reducing branch junction with minimal turbulence in gravity or low-pressure flow conditions
- Water & Wastewater Treatment — Plant drainage headers, backwash discharge lines, and gravity return systems where a 4" branch takeoff from a 6" collection main is required with smooth hydraulic transition
- Stormwater Management & Site Drainage — Underground stormwater collection networks requiring a 4" lateral branch junction off a 6" trunk pipe with reduced flow disruption in high-volume runoff conditions
- Swimming Pool & Aquatic Facility Piping — Main drain return and circulation piping where a reducing wye provides smooth branch flow for balanced hydraulic distribution across multiple circuits
- Industrial Ventilation & Exhaust Ducting — Low-pressure air handling and fume exhaust systems where PVC Schedule 40 is specified and a 45-degree reducing branch minimizes turbulent pressure drop at the junction
- Aquaculture & Hatchery Systems — Gravity-fed or low-pressure recirculation and drainage networks requiring a 4" branch reduction off a 6" main collection or distribution header
- Part #:
- 475-532
- Product Family:
- Sch 40 PVC
- Carton Qty:
- 5
- Pallet Qty:
- 60
- Size:
- 6"
