— working nozzles in the form of pistols. As befits a pistol, the design of such a device has, firstly, a handle located at an angle to the “barrel” (spray tube); secondly, the start button or bracket (colloquially "trigger"), by pressing which the water supply is turned on. Some models even allow you to adjust the intensity of work, depending on how much the “trigger” is recessed. Also, a button is often found in the design, which allows you to lock the bracket in a clamped position and loosen the grip — this is useful for long-term work, when constantly holding the trigger would be tiring. Anyway, the handle provides a comfortable hold, and the start button allows you to accurately dispense water.
Separately, it is worth noting that such devices are usually “basic”, primary nozzles: the gun itself is attached to a high-pressure hose, and if necessary, a foam nozzle, mud cutter, etc. can be additionally attached to the “barrel”, etc. Without such accessories, the gun , usually, works as an atomizer, giving out a "cloud" of fine spray, widely diverging from the nozzle.
