Old Castle C-44 Adapter 4 in Corrugated to SDR-35

Product Description

The OLD CASTLE C-44 is a 4-inch polyethylene adapter designed to transition between corrugated drainage pipe and SDR-35 sewer pipe. This fitting connects two common pipe systems found in residential and commercial underground drainage installations. It eliminates the need for field fabrication when joining corrugated flexible pipe to smooth-wall SDR-35 pipe, maintaining a secure, leak-resistant joint. Licensed plumbers and drainage contractors install this fitting during new construction, site drainage work, and repair projects where these two pipe systems meet.

This adapter is used in underground gravity-flow drainage systems where corrugated polyethylene pipe transitions to SDR-35 PVC or similar smooth-wall pipe. Typical applications include foundation drain tie-ins, storm drainage laterals, and site grading work. It is suited for both residential and light commercial installations where a reliable mechanical transition between pipe types is required at a 4-inch diameter.

Key Features

• Transitions 4-inch corrugated pipe to 4-inch SDR-35 pipe in a single fitting
• Polyethylene construction resists corrosion and chemical degradation in soil environments
• Designed for gravity-flow underground drainage applications
• Eliminates the need for fabricated field connections between mismatched pipe profiles

Compatibility

Designed as an OEM-style transition fitting for 4-inch corrugated drainage pipe and 4-inch SDR-35 sewer pipe systems in underground gravity-flow drainage applications.

Installation Notes

Installation is typically performed by a licensed plumber or drainage contractor. Ensure both pipe ends are clean and free of debris before seating the fitting. Follow local plumbing code requirements, including applicable IPC provisions for underground drainage piping. Do not install under pressurized flow conditions, as this fitting is intended for gravity drainage service only.

Technical Specifications

• Fitting Size: 4 inches
• Fitting Type: Adapter
• Material: Polyethylene

Standard Information

• Brand: OLD CASTLE
• Manufacturer Part Number: C-44