Stationary suction unit FSx0BP series

with siphon filter

Syphon filter systems with automatic by-pass FS 50 BP and FS 60 BP The system, composed of two siphon filters, operates initially with suction through filter 1 and with filter 2 excluded. When the suctioned liquid reaches the float on the level switch, automatically by means of the 1” 1/2 three-way vacuum interception solenoid valve for item FS 50 BP and 2” for item FS 60 BP, an exchange is made and suction passes through filter 2. The input of atmospheric air into filter 1 via the ½” three-way solenoid valve installed on its lid, accumulated liquid is allowed to discharge automatically through the check valve with tap on the bottom of the filter. Once liquid has been discharged, after a pre-set time (this operation can be timed), the solenoid valve returns to its initial position, thus allowing recreation of a vacuum inside the filter through a small flexible hose connected to the main vacuum piping. With this arrangement, there will not be any decrease in the level of vacuum for use when the suction exchange will be carried out between the two filters. This exchange will take place when the liquid reaches the level switch float on filter 2 and, from that moment, the operations described above will be repeated. The filter system is composed of: - 2 Plexiglas siphon filters with aluminium lids and complete with accessories, with a flow rate of 38 L each