4 inch PVC SDR 35 Adapter Fitting x Hub

4 Inch PVC SDR 35 Adapter – Spigot x Hub

The 4 inch PVC SDR 35 Adapter (Spigot x Hub) is engineered for use in non-pressurized sanitary sewer and stormwater drainage applications. Manufactured to meet ASTM D3034 standards, this fitting provides a secure transition point between SDR 35 pipe segments or between pipe and fitting hubs, supporting long-term system integrity in underground installations.

Specifications and Performance Standards

Consistent material properties and dimensional accuracy are critical for maintaining watertight seals and long service life. This adapter delivers:

• ✅ ASTM D3034 Compliance – Manufactured in accordance with ASTM standards for SDR 35 PVC sewer fittings, ensuring compatibility and regulatory approval for municipal and commercial use.
• ✅ Injection Molded or Fabricated Construction – Depending on configuration, each fitting meets strict tolerances for wall thickness, socket depth, and roundness.
• ✅ Smooth Interior Walls – Minimizes flow restriction and promotes efficient conveyance of waste and stormwater.

Installation Guidance

Install using solvent-welding methods compatible with PVC materials. Use primer and solvent cement per ASTM D2564 specifications. Allow sufficient cure time before backfilling or pressure testing. Socket depth and joint alignment should be confirmed prior to assembly. Do not use in pressurized systems.

Product Highlights

• ✅ Corrosion-Resistant PVC – Will not rust or scale, ideal for buried applications in varying soil conditions.
• ✅ DWV System Compatible – Suitable for gravity flow sanitary sewer, stormwater, and drainage system tie-ins.
• ✅ Universal Fit – Compatible with SDR 35 pipe of the same nominal size; spigot end inserts into hub or socket.
• ✅ Low Weight, High Rigidity – Easier to handle and position during installation compared to cast iron or ductile iron alternatives.

Typical Applications

Frequently specified in municipal sewer laterals, stormwater diversion systems, and building sewer tie-ins. Used in both greenfield and retrofit infrastructure where adapting existing layouts to SDR 35 standards is required.

Standards & Application Note

SDR 35 pipe and fittings are designed for gravity-flow systems with low internal pressure. This adapter fitting plays a key role in layout flexibility, particularly where system elevation changes or offset connections are required. Do not substitute in high-pressure or potable water applications.

With a design that supports consistent installation results, the 4 Inch PVC SDR 35 Adapter (Spigot x Hub) is a reliable solution for underground drainage infrastructure projects. Incorporate this fitting where secure, code-compliant transitions are required between SDR 35 system components.