Patent ID: 7011505
Filing Date: 2006-03-14
Classification: B01D,B60P,E03F,F04C,F04D,Y10T

Abstract:
1. A separator tank for a main pump, the separator tank comprising: a main inlet for receiving pump fluid for the pump; a main outlet for providing pump fluid to the pump; a reservoir for accommodating pump fluid between the main inlet and the main outlet; an air port in fluid communication with the reservoir, the air port positioned above an expected level of the pump fluid in the reservoir; a valve having a first position and a second position, the first position fluidly connecting the air port to a vacuum pump and the second position fluidly connecting the vacuum pump to atmosphere; and a sensor for sensing a level of pump fluid in the reservoir, the sensor providing an electrical signal that provides an indication of the level of pump fluid in the reservoir, the electrical signal used, at least in part, to control the position of the valve.