This is the boiler feed unit version of the BVC and comes standard with an electrical solenoid make-up water valve with a float switch control. A low water cut-off switch is provided to prevent pumps from operating should the make-up water assembly fail to prevent the pumps from running dry and burning up the mechanical seals. 

This Big Vacuum and Condensate unit comes with independent air and water pumps. The multi-jet design has proven effective and reliable for eliminating air and lifting hot condensate in the return system. A standard cast iron receiver is provided with a standard 20-year warranty against corrosion failure for years of serviceability or a rectangular steel tank. The vacuum tank (or hurling chamber) is either heavy gauge, black steel or cast iron depending upon the size. The standard unit is designed for usage with system capacities ranging up from 1,000 square feet EDR; air pumps range up from 5.8 cubic feet per minute (cfm) at 5-1/2" HG at 160°F. This unit comes completely packaged along with electrical controls.