Guardair HT139 Air Blow Gun Supersonic Nozzle 105 Scfm

Product Description

The GUARDAIR HT139 is a heavy-duty air blow gun fitted with a supersonic nozzle, designed for industrial and trade environments where high-velocity air delivery is required for cleaning, drying, and debris removal. It delivers 105 standard cubic feet per minute (SCFM) through a 48-inch rigid tube, giving technicians extended reach without repositioning. The 3/4 NPT inlet threads directly onto standard compressed air supply lines. At a decibel rating of 124 dB, hearing protection is required during operation. Licensed trades and maintenance professionals working in manufacturing, HVAC mechanical rooms, and fabrication shops are the primary users of this tool.

The HT139 is suited for stationary and portable compressed air systems where high-volume airflow is needed across a distance. The 48-inch tube length makes it practical for blowing out ductwork, clearing debris from machinery, purging condensate from drain lines, and drying components after wet service work. It is commonly used in commercial and industrial settings where a standard short-barrel blow gun lacks the reach or flow volume for the task at hand.

Key Features

• Supersonic nozzle delivers 105 SCFM for high-volume air displacement
• 48-inch tube provides extended reach into confined or deep workspaces
• 3/4 NPT inlet fits standard compressed air supply connections
• Rigid tube construction supports precise directional airflow
• Decibel rating of 124 dB — PPE required per OSHA noise exposure standards

Compatibility

Designed for use with compressed air supply systems equipped with a 3/4 NPT threaded outlet. No specific model compatibility data was provided in the product input.

Installation Notes

Connection and use of this blow gun should be performed by qualified personnel familiar with compressed air system safety. Always depressurize and isolate the air supply line before threading or unthreading the inlet connection. Verify that the supply line pressure rating is compatible with the tool before operation. Hearing protection must be worn during use given the 124 dB output level, in compliance with applicable OSHA noise exposure regulations.