Hart Cooley 16404 Type B Gas Vent Round Pipe 7x18 Inch

Product Description

The HART COOLEY 16404 is a double-wall, round Type B gas vent pipe designed for natural gas and propane appliance venting applications. It features a 7-inch inner diameter and 8-inch outer diameter, with an 18-inch length. The inner wall is 0.012-inch aluminum and the outer wall is 0.018-inch G90 galvanized steel, forming an insulated annular air space between the two walls. This pipe uses a lock ring end type for secure section-to-section connections. Each case contains 4 sections. Licensed HVAC technicians and gas appliance installers work with this pipe during new venting system builds and service replacements.

This pipe is suited for residential and light commercial Type B gas vent systems that exhaust non-positive-pressure, listed gas appliances such as furnaces, boilers, and water heaters. It belongs to the HART COOLEY RP Series and is intended for use as part of a complete B-vent assembly that may include elbows, tees, caps, and supports. The minimum clearance to combustibles is 1 inch, making it appropriate for installations inside framed wall chases and attic spaces where clearance is limited but code-compliant.

Key Features

• Double-wall construction: 0.012-inch aluminum inner wall and 0.018-inch G90 galvanized steel outer wall
• Lock ring end type for fast, secure section connections
• 7-inch inner diameter with 1-3/8-inch overlap size for positive engagement
• Minimum 1-inch clearance to combustibles per UL 441
• Temperature rated to 400 degrees F
• Sold as 4 sections per case

Compatibility

Designed as an OEM-style replacement and new-install component within Type B double-wall gas vent systems using HART COOLEY RP Series fittings and accessories.

Installation Notes

Installation must be performed by a licensed HVAC technician or gas appliance installer in accordance with the International Fuel Gas Code (IFGC) and the appliance manufacturer's venting instructions. Shut off the gas supply and allow the appliance to cool completely before servicing any vent section. Maintain the required 1-inch clearance to all combustible materials throughout the vent run. Do not mix this pipe with vent components from other series or manufacturers without verifying dimensional and listing compatibility.