Vacuum water filling system 12V without control unit

Vacuum water filling system is designed for water intake and is used for water filling of fire pump and suction hoses during operation of fire tanker, fire boats of mobile fire units, from open water source (reservoir) in which positive temperature is provided during operation. Field of application - for completion of pumping units of fire tankers, including replacement of gas jet apparatus, in order to improve their technical and operational characteristics. Maximal rarefaction 0,8 kgf/cm2, Time of water filling of fire pump (and 2 suction hoses ?125 total length of 8m) from the height of 3,5 m - not more than 20 sec. from the height of 7,5 m - not more than 40 sec.Nominal supply voltage 12 V