A compressed air gun is a device used for applications that require compressed air, such as waste removal, non-contact drying, and blowing. It consists of a nozzle that is attached to the air line, which supplies a constant stream of compressed Soft air gun. It is usually used in laboratories and manufacturing industries. Figure 1 is an example of a compressed air blow gun.
To choose a suitable blow gun, you must first look at the maximum pressure that can be applied. First, it is important to check the type and size of the inlet connection to match the hose on the air compressor. Next, the air gun nozzle must be selected to ensure a proper outlet port for your application. The compressed air output can be constant or adjustable depending on the trigger design.
Common types of air intake
Air blow guns are equipped with various types of inlet ports that provide a safe and easy connection to the compressed air supply. Typically, the air blow gun has female threads, so they connect to a fitting with male threads with a hose barb or pneumatic coupling on the other end.
A hose fitting is an accessory commonly used to connect and secure pneumatic tools, hoses or tubes. They are usually made of plastic, steel or brass. The male threads of the hose connect to the air gun and the hose connects to a tube or hose. The lug rings allow for easy, leak-free connection. Often, a hose clamp is used to further secure the hose barb in place.
A pneumatic coupling connects compressed air tools to a compressed air line. The air gun can be easily connected or disconnected from the air supply line while under pressure. It consists of the quick coupling (figure 3, left side of the fitting) and a plug or nipple (figure 3, right side of the fitting). The plug-in side follows common styles to make them interchangeable, such as the Euro or Orion docking style. By disconnecting the plug side, the system will remain pressurized, allowing you to quickly and easily disconnect and connect different tools with the same connection style.
Common outlet types (nozzles)
Air guns have an outlet port that is usually equipped with a nozzle that directs the exiting compressed air. There are six types of common outlet nozzles, shown in the graphic below. Depending on the application and use of the air gun, there is an optimal nozzle for that use.
To control the air pressure output, there is usually a control knob or pistol grip design. A control knob can be turned to adjust and control the flow of compressed air. The gun grip design allows for variable flow control based on how much the trigger is pulled.
Air guns can be dangerous if used without proper care. They can produce loud noises that can cause hearing loss, particles thrown into the air by compressed air can enter the eye and cause irritation and infections, and compressed air itself can cause injury if it enters the body through the skin. In the United States, air blow guns must comply with the OSHA compressed air blow gun regulations. OSHA regulation 29 CFR Part 1910.242(b) states that compressed air should not be used for cleaning purposes except when reduced to less than 30 psi (200 kPa) and only with the use of effective protective equipment.
Housing and internal parts
Air guns typically have metal or plastic casings. A plastic casing is much lighter than a metal casing and prevents the handle from feeling cold. The pistol grip and handle provide the ergonomic advantage to the user. The nozzle that guides the compressed air to the desired point is usually made of aluminum or galvanized steel. The internal parts of the gun are made of brass and stainless steel, while its sealing is usually made of NBR. For added user protection, air guns may also have protective shields, usually made of plastic, to protect against ricochet particles.