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What are air blow guns

Air blow guns attach to air lines for theNPT connectors have 27 TPI and an OD of
manual actuation and/or control of air0.405”. 1/4” NPT connectors have
discharge. They are used primarily for debris18 TPI and an OD of 0.540”. 3/8”
removal and purging, non-contact partNPT connectors also have 18 TPI, but an OD of
cleaning and drying, and general laboratory0.675”. 1/2” connectors have 14
or industrial applications. Most air blowTPI and an OD of 0.840”. #10-32 NPT
guns are made of plastic or metal and includethreads are also available. Air line
an ergonomic grip or handle. A steady streamconnections that can swivel or pivot are
of compressed air is delivered through asuitable for applications that require
sturdy metallic nozzle. Air blow guns thatversatile  positioning.
are equipped with an internal fail-safe
pressure mechanism shut off automatically ifAir blow guns vary in terms of nozzle type
the gun is dropped or the lip is blocked.and actuation style. Standard safety nozzles
Integral pressure relief valves are used toare suitable for general-purpose
blow off excess pressure before discharge. Inapplications. Small-diameter nozzles can be
the United States, products that meet orinserted into tight openings. Nozzles with
exceed standards from the Occupational Safetyrubber tips prevent the marring of surfaces
and Health Administration (OSHA) are commonlywhile nozzles with flexible tips can be
available. Typically, manufacturers indicateguided directly to the application point. Air
whether products are suitable for high volumeblow guns with extended, straight nozzles
applications, or include a threaded dischargeprovide longer reach. Devices with extended,
port  or  vacuum  attachment.angled nozzles are designed for use in
difficult-to-reach locations. Venturi nozzles
Specifications for air blow guns includecontain small holes that allow the discharge
pressure capacity and air line connectionto draw ambient air to increase the airflow.
type. Pressure capacity or maximum ratedAir screens are often used to minimize
pressure is rated at the air inlet andparticle blowback. In terms of actuation,
measured in pounds per square inch (psi).most air blow guns include a discharge lever
Many types of air line connectors arethat is in-line with the air hose and
available. Quick-release connectors containactuated by thumb. Pistol or trigger-style
fittings that are attached internally. Bydevices are also available. With these
contrast, push-on connectors include barbeddevices, the actuator is located at a
ferrules. Air blow guns use several types ofright-angle to the air supply hose and
national pipe thread (NPT) connectors, mostincorporates an ergonomic handle.
of which are inch-based and female. ImportantButton-actuated air blow guns are also
NPT measurements include threads per inchavailable.
(TPI) and outside diameter (OD). 1/8”



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