This device can be used as: • Zero governor: keeps the downstream pressure at zero even changing the fl ow request; • Air/gas ratio device: keeps constantly the air/gas ratio even changing air pressure. Pmax = 500 mbar If used as ratio regulator, it is possible to set it to obtain an air/gas mixing =1:1 or, using the modifi cation kit a mix proportional from a ratio 1:2 to a ratio 1:10. It can be supplied
