4" x 36" Round Pipe, Type B Gas Vent

The Hart & Cooley 016102 Round Type B Gas Vent Pipe (Model 4RP3) is a professional-grade venting component designed for use in gas-fired heating appliance installations. This 3-foot section of 4-inch diameter vent pipe provides a secure, code-compliant flue connection for furnaces, boilers, and water heaters. Constructed with a double-wall design featuring an aluminum inner liner and galvanized steel outer casing, the 4RP3 vent pipe ensures efficient exhaust flow, mechanical strength, and long-term corrosion resistance in residential and commercial HVAC systems.

Details

• Model Number: 016102
• Manufacturer: Hart & Cooley
• Product Type: Round Type B Gas Vent Pipe
• Series: RP
• Part Number: 114804
• Nominal Diameter: 4 inch (ID)
• Outside Diameter (OD): 4-1/2 inch
• Length: 36 inch (3 feet)
• Wall Thickness: 0.012 inch
• Material: Aluminum inner liner and galvanized steel outer wall
• Connection Type: Twist-lock joint for secure, tool-free assembly
• Application: Type B gas vent systems for natural gas or LP-fired appliances
• Temperature Rating: Continuous operation up to 480 °F flue gas temperature
• Mounting Orientation: Vertical or horizontal configurations as per venting design
• Compliance: UL 441 Listed; conforms to NFPA 54 (National Fuel Gas Code) and local mechanical code requirements

Professional Specifications

The Hart & Cooley 4RP3 vent pipe section is engineered to maintain consistent draft performance while ensuring safe venting of flue gases from high-efficiency natural gas and propane appliances. The aluminum inner liner provides smooth airflow and corrosion protection from acidic condensate, while the galvanized steel outer wall delivers rigidity and structural protection. The double-wall construction reduces heat transfer to surrounding materials, maintaining proper clearance to combustibles. The precision twist-lock coupling system enables rapid alignment and assembly, ensuring an airtight, mechanically stable joint without the need for sealants. Each section is manufactured to strict tolerances for full compatibility with other Hart & Cooley RP Series components.

Summary

The Hart & Cooley 016102 (4RP3) 4-inch Type B Round Gas Vent Pipe provides a durable, UL-listed solution for gas venting systems in professional HVAC installations. Its double-wall aluminum-steel design, precision-formed twist-lock connection, and corrosion-resistant construction ensure reliable, code-compliant performance and long service life in both residential and commercial applications.