I've developed 2 cleaning nozzles for use in plants for food production both in the US and in the EU in compliance with the engineering rules of EHEDG and 3A respectively. 

What both nozzles have in common is that they can both be used without any electrics or pneumatics being needed. The nozzles are activated by means of the pressure of the cleaning medium. 

The spraying pattern of the upper cleaning nozzle consists of a disc of 360 degrees with a diameter of 2.5 metres approximately. It is suitable for the cleaning of the inner walls of tanks. The construction is designed for a volume flow rate of 380 litres per minute provided a working pressure of 4 bar. The lower cleaning nozzle produces a full cone of 45 degrees provided a working pressure of 4 bar and a volume flow rate of 150 litres per minute. By using a suitable welding flange the spraying cone can be adjusted at any time if needed.