You are about to watch a comparison discharge test between a cylinder + pipe + nozzle manufactured by Kidde (At the top part) and the Spectrex cylinder with a 360 degrees dispersion module (At the lower part of the picture).Both discharge the extinguishing agent at the same distance (1.3 ft/40cm) from the watermelon and are directed towards the watermelon (the watermelon simulates the head of a soldier).

 

Things to notice:

The top cylinder which includes a pipe + nozzle The lower cylinder with the 360 degrees dispersion 
Blows off the watermelon High impact in direct line opposite the nozzle Substantially smaller impact leaves the watermelon intact
Limited dispersion, narrow angle Wide dispersion, 360 degrees angle.Deflector provides homogenous dispersion and fills a large volume faster
Slower discharge Fast discharge