4" x 48" Round Pipe, Type B Gas Vent

The Hart & Cooley 016101 Round Type B Gas Vent Pipe (Model 4RP4) is a precision-engineered venting component designed for professional use in gas-fired heating and mechanical systems. This 4-foot section of 4-inch diameter vent pipe provides a code-compliant connection for furnaces, boilers, and water heaters operating on natural gas or propane. Constructed with a durable double-wall design consisting of an aluminum inner liner and galvanized steel outer casing, the 4RP4 ensures reliable draft performance, thermal efficiency, and corrosion resistance in both residential and commercial venting applications.

Details

• Model Number: 016101
• Manufacturer: Hart & Cooley
• Product Type: Round Type B Gas Vent Pipe
• Series: RP
• Part Number: 114805
• Nominal Diameter: 4 inch (ID)
• Outside Diameter (OD): 4-1/2 inch
• Length: 48 inch (4 feet)
• Wall Thickness: 0.012 inch
• Material: Double-wall construction with 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 and LP appliances, including furnaces, boilers, and water heaters
• Temperature Rating: Continuous operation up to 480 °F flue gas temperature
• Orientation: Suitable for vertical or horizontal installations per venting design requirements
• Compliance: UL 441 Listed; conforms to NFPA 54 (National Fuel Gas Code) and applicable local mechanical codes

Professional Specifications

The Hart & Cooley 4RP4 vent pipe section is manufactured for precise fitment and consistent field performance in Type B gas vent assemblies. The aluminum inner liner provides smooth airflow characteristics and resistance to flue gas corrosion, while the galvanized steel outer shell offers mechanical strength and long-term durability. The double-wall construction reduces external surface temperature, maintaining safe clearance to combustibles as defined by Type B vent standards. The twist-lock connection system allows fast alignment and secure engagement without the need for tools or sealant. Each pipe section is dimensionally verified to ensure compatibility across all Hart & Cooley RP Series components and fittings.

Summary

The Hart & Cooley 016101 (4RP4) 4-inch Type B Round Gas Vent Pipe delivers a durable, UL-listed venting solution for professional gas appliance installations. Its double-wall aluminum and steel construction, precision-formed twist-lock joints, and high-temperature performance provide dependable, code-compliant operation in demanding HVAC and mechanical applications.