4 inch PVC SDR 35 Cap with Gasket

4 inch SDR35 Cap with Gasket – Sealing Solution for Gravity Sewer Systems

The 4 inch SDR35 Cap with Gasket is a solvent-free, gasketed fitting designed to terminate SDR35 gravity sewer piping. It provides a mechanical seal that ensures watertight system closure while allowing for access and potential future expansion. The flexible elastomeric gasket accommodates slight pipe deflection and enhances joint performance under ground movement and loading.

Manufactured from PVC conforming to ASTM standards, this cap offers long-term durability in non-pressure sanitary systems. The gasketed connection eliminates the need for solvent welding, reducing installation time and minimizing environmental exposure to adhesives in subsurface applications.

Performance Features

• ✅ Elastomeric Gasket Seal – Designed to meet ASTM D3212 for leak resistance in low-pressure and gravity-fed systems.
• ✅ SDR35 Compatibility – Matches standard 4 inch SDR35 pipe dimensions, providing system continuity without custom adjustments.
• ✅ Non-Pressure Rated – Intended for use in sanitary and storm sewer applications where gravity flow conditions prevail.
• ✅ Corrosion-Resistant PVC – Suitable for burial in soil with variable pH, providing structural integrity over time.
• ✅ Removable for Access – Facilitates cleanouts, inspections, or future extensions without damage to adjoining components.

Installation Guidelines

Ensure the pipe end is clean, round, and chamfered. Lubricate the gasket and pipe spigot with an approved water-based lubricant. Insert the pipe fully into the cap socket until the insertion line is reached. Confirm gasket engagement without over-deflection. Do not use solvent cement on gasketed fittings.

Specifications

• Material: PVC (polyvinyl chloride)
• Nominal Size: 4 inches
• Standard: ASTM D3034 (SDR35), ASTM F1336, ASTM D3212
• Connection Type: Gasketed bell end (non-solvent)
• Use: Gravity-flow sanitary and storm sewer systems

Common Applications

Used at terminal ends of 4 inch SDR35 sewer runs, cleanout risers, or capped lateral stubs awaiting future tie-ins. Appropriate for both residential site utilities and commercial drainage systems installed per UPC/IPC guidelines and local municipal standards.

System Context

SDR35 (Standard Dimension Ratio 35) PVC pipe and fittings are optimized for low-pressure systems that rely on consistent slope and gravity to maintain flow. Their lightweight construction and bell-and-gasket joint design support faster installation and alignment flexibility in trench environments.

The 4 inch SDR35 Cap with Gasket is a standard termination fitting engineered to maintain system continuity and hydraulic integrity at closed ends. It is a reliable component for long-term service in gravity-fed wastewater and stormwater infrastructure.