4 inch x 3 inch Sewer by DWV Transition Reducing Coupling Hub x Hub

IPEX 4 inch x 3 inch DWV Transition Reducing Coupling – Precision Fit for DWV Applications

The IPEX 4 inch x 3 inch DWV Transition Reducing Coupling is a solvent-weld fitting engineered for reliable size transitions within drain, waste, and vent (DWV) systems. Designed to facilitate secure connections between 4-inch and 3-inch nominal DWV piping, this coupling ensures optimal flow performance and leak-free transitions under low-pressure conditions.

Key Features and Technical Advantages

• Size: 4 inch spigot x 3 inch hub configuration
• Material: Polyvinyl Chloride (PVC) – formulated for DWV use
• Standards Compliance: Conforms to ASTM D2665 and CSA B181.2 specifications
• Temperature Rating: Suitable for non-pressurized systems operating up to 140°F (60°C)
• Solvent Weld Joint: Designed for strong chemical bonding with compatible DWV pipe and fittings

Applications

This coupling is ideal for reducing transitions in vertical and horizontal DWV piping layouts. It is commonly used in residential and commercial systems where a 4-inch to 3-inch reduction is necessary—such as branch drains connecting to main stacks or retrofits in confined wall or floor spaces.

Installation Notes

Installation requires the use of approved PVC solvent cement and primer to meet code-compliant bonding standards. Ensure surfaces are clean and dry before application. No threading is required. All installations should comply with applicable plumbing codes and manufacturer guidelines.

Additional Benefits

• Supports smooth hydraulic flow with minimal turbulence at transition points
• Non-corrosive and resistant to chemical degradation common in waste systems
• Lightweight and easy to handle for overhead and tight-space installations

Choose the IPEX 4 inch x 3 inch DWV Transition Reducing Coupling for a reliable and code-compliant reduction in your drainage systems. Its precision-molded construction and standards-based design make it a practical solution for long-lasting performance in DWV applications.