Air Flow Products PI183SL Snap-lock Galvanized Pipe 26GA

Product Description

The AIR FLOW PRODUCTS PI183SL is a snap-lock galvanized steel pipe section used in low-pressure duct distribution systems. Constructed from 26-gauge galvanized steel, this round pipe section measures 18 inches in diameter and 3 feet in length. The snap-lock seam design allows field assembly without additional fasteners along the longitudinal seam, reducing installation time on trunk-and-branch and radial duct layouts. HVAC technicians and sheet metal contractors use this type of pipe for supply and return air distribution in residential and light commercial applications.

This pipe section fits standard round duct configurations where an 18-inch diameter is required. It is suited for new construction and retrofit installations where galvanized round pipe is specified for supply plenums, main trunks, or large-diameter branch runs. The 3-foot section length is practical for tight-access areas or where shorter runs are needed to make transitions and offsets without excessive cutting on site.

Key Features

• 26-gauge galvanized steel construction resists corrosion in typical HVAC duct environments
• Snap-lock seam allows fast field assembly without tools along the pipe seam
• 18-inch diameter supports high-volume airflow in large residential or light commercial systems
• 3-foot section length suits short runs, transitions, and confined installation spaces
• Compatible with standard round duct fittings, collars, and connectors at the 18-inch diameter

Compatibility

Designed as a standard round snap-lock duct pipe section for use with 18-inch diameter round duct fittings, end caps, elbows, and take-offs in low-pressure HVAC air distribution systems.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal contractor in accordance with SMACNA duct construction standards and applicable local mechanical codes. Shut down and lock out the air handling unit before connecting or modifying any duct section. Secure pipe joints with sheet metal screws and seal all seams and connections with UL 181-listed duct sealant or approved tape to meet code requirements. Avoid over-crimping the pipe ends, as deformation can prevent proper seating with fittings.

Technical Specifications

• Gauge: 26 GA galvanized steel
• Diameter: 18 inches
• Length: 3 feet (36 inches)
• Seam Type: Snap-Lock
• Material: Galvanized Steel

Standard Information

• Brand: AIR FLOW PRODUCTS
• Manufacturer Part Number: PI183SL