6 inch x 4 inch PVC SDR 35 Reducing Adapter Fitting x Hub

SDR 35 PVC Reducing Adapter – 6 inch x 4 inch Hub Transition Fitting

This 6 inch x 4 inch SDR 35 reducing adapter is designed for use in gravity-flow sanitary sewer and storm drainage systems. It facilitates direct size transitions between 6-inch and 4-inch SDR 35 pipe runs, enabling layout flexibility while maintaining structural integrity and flow performance.

Manufactured from PVC material compliant with ASTM D3034, this adapter provides a secure hub-to-hub connection point within solvent-welded systems. The precision-molded construction ensures compatibility with standard SDR 35 fittings and pipe ends, reducing installation variability and field modifications.

Product Features and Field Advantages

• ✅ High-Strength PVC Rated for non-pressure applications in underground and above-ground drainage systems.
• ✅ Formed Hub Connections Accepts SDR 35 pipe spigots for solvent welding using approved cements.
• ✅ Dimensional Accuracy Ensures consistent alignment and grade control across varying system configurations.
• ✅ Transition Versatility Reduces from 6 inch to 4 inch without needing custom couplings or reducers.
• ✅ Standards-Compliant Manufactured to meet ASTM D3034 and F1336 for SDR 35 fittings and accessories.

Specification Details

• Nominal Sizes: 6 inch x 4 inch
• Material: Polyvinyl Chloride (PVC), non-pressure rated
• Fitting Type: Reducing Adapter
• Connection Style: Hub x Hub (solvent weld)
• Applicable Standards: ASTM D3034, F1336, and typically used in systems designed per ASTM D2321 for installation practices

Installation Overview

Clean and dry-fit all mating surfaces prior to assembly. Use purple primer and PVC solvent cement rated for SDR 35 pipe to ensure secure bonding. Maintain alignment and slope per design specifications. Allow full cure time before backfilling or pressurizing adjacent systems. Compatible with standard SDR 35 inspection, cleanout, and transition components.

Typical Applications

Primarily used in residential, municipal, and commercial gravity sewer and stormwater systems. Suitable for branch line reductions, lateral offsets, or cleanout configurations requiring diameter transition within the same piping specification class.

Material Performance Note

SDR 35 PVC offers excellent resistance to corrosive soil conditions and is suitable for long-term buried installations. Its smooth interior surface supports optimal flow velocities and reduces sediment buildup at transitions and junctions.

This 6 inch x 4 inch SDR 35 adapter provides contractors with a reliable transition fitting that meets critical specifications for underground DWV systems. Its performance and durability contribute to code-compliant builds and reduced maintenance exposure over time.