Hart Cooley 4rp24 B-vent Round Pipe 4 X 24 Inches

Product Description

The HART COOLEY 4rp24 is a Type B round gas vent pipe section used to route combustion exhaust from gas-fired appliances to the exterior of a structure. This pipe measures 4 inches in diameter and 24 inches in listed length. When joined with adjacent sections or fittings, couplers overlap by 1-3/8 inches, reducing the assembled length by 1-3/8 inches from the listed dimension. The outside diameter on 4-inch size pipe is the nominal size plus 1/2 inch. Minimum clearance to combustibles is 1 inch. Licensed HVAC technicians and plumbers install this pipe as part of a B-vent venting system for natural gas or propane appliances.

This pipe section is intended for use in residential and light commercial Type B gas venting systems. It is suited for venting gas furnaces, boilers, water heaters, and similar appliances that require a listed double-wall B-vent assembly. It connects with compatible 4-inch B-vent fittings, elbows, caps, and supports in the same product family. A full set of installation instructions is supplied with caps and supports in the system.

Key Features

• 4-inch nominal diameter with outside diameter equal to nominal size plus 1/2 inch
• 24-inch listed length; assembled length is 1-3/8 inches less due to coupler overlap
• 1-inch minimum clearance to combustibles required during installation
• Designed for use in Type B double-wall gas venting systems
• Compatible with matching B-vent fittings, caps, and support components in the same diameter series

Compatibility

Designed as an OEM-style component for residential and light commercial Type B gas vent systems using 4-inch diameter round pipe and fittings. Compatible fittings in the same series cover pipe sizes ranging from 3 inches through 12 inches nominal diameter.

Installation Notes

Installation should be performed by a licensed HVAC technician or plumber in accordance with the appliance manufacturer instructions, NFPA 54 (National Fuel Gas Code), and local mechanical codes. Shut off gas supply and allow the appliance to cool before servicing or extending any venting run. Maintain a minimum 1-inch clearance to all combustible materials throughout the venting path. Follow the full installation instructions included with caps and supports for proper assembly and support spacing.

Technical Specifications

• Pipe Diameter: 4 inches nominal
• Listed Length: 24 inches
• Assembled Length Deduction: 1-3/8 inches (due to coupler overlap)
• Outside Diameter: 4.5 inches (nominal size plus 1/2 inch)
• Minimum Clearance to Combustibles: 1 inch
• Vent Type: Type B Round Gas Vent
• Unit of Measure: Each

Standard Information

• Brand: HART COOLEY
• Manufacturer Part Number: 4rp24