Fernco Inc P33U-305 Cast Iron Hub Donut 3 Inch

Product Description

The FERNCO INC P33U-305 is a cast iron hub donut designed to create a leak-resistant transition between dissimilar pipe materials at a 3-inch diameter connection point. This fitting connects 3-inch service weight cast iron pipe to the plain end of 3-inch PVC Schedule 40 plastic pipe. The unit weight is 10 pounds per package of 20 pieces. Plumbers and pipefitters use this adapter where drain, waste, and vent systems require a reliable mechanical joint between legacy cast iron and modern plastic piping without cutting threads or soldering.

This hub donut is suited for residential and commercial drain, waste, and vent applications where existing cast iron infrastructure is being tied into PVC Schedule 40 runs. Typical scenarios include renovation and retrofit work where older cast iron stacks or horizontal runs meet new PVC branch lines or extensions. The 3-inch size is common in toilet, main drain, and soil stack configurations.

Key Features

• Connects 3-inch service weight cast iron pipe to 3-inch PVC Schedule 40 plain end pipe
• Provides a mechanical transition without threading or heat joining
• Sized for common 3-inch drain, waste, and vent stack applications
• Sold as individual units (EA) with a package quantity of 20

Compatibility

Designed for use with 3-inch service weight cast iron pipe and the plain end of 3-inch PVC Schedule 40 plastic pipe in drain, waste, and vent systems.

Installation Notes

Installation is typically performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off water flow and verify the system is depressurized before beginning any pipe connection work. Ensure pipe ends are clean, free of burrs, and properly deburred before seating the hub donut. Do not exceed the rated pipe sizes or attempt to use this fitting with Schedule 80 or other non-specified pipe schedules.

Technical Specifications

• Pipe Size: 3 inches
• Compatible Pipe Types: Service Weight Cast Iron to PVC Schedule 40
• Package Weight: 10 pounds
• Unit of Measure: EA
• Package Quantity: 20

Standard Information

• Brand: FERNCO INC
• Manufacturer Part Number: P33U-305