4 inch PVC Sewer and Drain Coupling Hub x Hub

4 inch PVC Sewer and Drain Coupling – SDR 35 Hub x Hub for Gravity Flow Systems

The 4 inch PVC Sewer and Drain Coupling is a solvent-weld fitting designed for use in gravity-fed sewer and drainage applications. Manufactured from polyvinyl chloride (PVC) in accordance with ASTM D3034 specifications, this fitting provides a dependable connection between 4 inch nominal SDR 35 pipes in non-pressurized systems.

Engineered for reliability, the coupling features hub x hub ends that allow for proper solvent bonding using PVC cement and primer. Its rigid construction, corrosion resistance, and dimensional accuracy make it a preferred component in municipal, commercial, and residential wastewater infrastructure.

Product Features

• Solvent Weld Socket Ends: Accepts 4 inch SDR 35 sewer pipe for permanent, watertight bonding.
• ASTM D3034 Compliant: Conforms to dimensional and material standards for SDR 35 fittings used in gravity flow systems.
• Corrosion and Chemical Resistance: PVC material resists degradation from soil conditions and sewage-related chemicals.
• High Dimensional Accuracy: Ensures alignment and uniform joint spacing, supporting smooth hydraulic performance.
• Non-Pressure Rated: Designed specifically for underground sewer and drainage systems operating without internal pressure.

Specifications

• Material: PVC Type I, Grade I per ASTM D1784
• Size: 4 inches nominal pipe size
• End Type: Hub x Hub
• Standard Compliance: ASTM D3034, F679 (for larger systems), and CSA B182.2 (where applicable)
• Application: Sewer and drainage, venting, and stormwater collection systems

Installation Notes

Install using a two-step solvent welding process: apply primer followed by PVC cement to both mating surfaces. Insert pipe to full socket depth and hold briefly to allow curing. Avoid backfilling until joints are set. Follow all local plumbing codes and specifications for burial depth and pipe slope.

Applications

This coupling is typically used in the following:

• Underground gravity sewer laterals and mains
• Stormwater conveyance systems
• Foundation and footing drains
• Sanitary and vent line connections (where SDR 35 is permitted)

Material Insight

PVC SDR 35 fittings are valued for their smooth interior surfaces, minimizing sediment build-up and reducing flow resistance. They are inert to most acids, bases, and salts, contributing to system longevity and reliability.

The 4 inch PVC Sewer and Drain Coupling is a purpose-built component for use in non-pressurized piping systems, supporting code-compliant installations in a range of infrastructure projects. Designed for consistent performance and straightforward assembly, it plays a critical role in modern drainage networks.