When installing the primary sump pump 50, a check valve 54 is often installed downstream from a discharge 56 of the primary sump pump 50 to prevent flow of the water back into the sump pit 52. 1 illustrates a common installation of a primary sump pump 50 in a sump pit 52. regulation, of pumps, pumping installations or systems by changing the speed, e.g. F04B49/08- Regulating by delivery pressure.F04B23/021- Pumping installations or systems having reservoirs the pump being immersed in the reservoir.F04B23/02- Pumping installations or systems having reservoirs.F04B23/00- Pumping installations or systems.F04B17/00- Pumps characterised by combination with, or adaptation to, specific driving engines or motors.of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 F04B- POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS PUMPS.F04D15/0218- Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply.F04D15/0209- Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid.F04D15/02- Stopping of pumps, or operating valves, on occurrence of unwanted conditions.regulation, of pumps, pumping installations or systems F04- POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS.F- MECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority claimed from US13/660,748 external-priority Application filed by Sta-Rite Industries, Llc filed Critical Sta-Rite Industries, Llc Publication of WO2014066551A1 publication Critical patent/WO2014066551A1/en Links MAZZA John Emerson Original Assignee Sta-Rite Industries, Llc Priority date (The priority date is an assumption and is not a legal conclusion. Google Patents WO2014066551A1 - Battery backup sump pump systems and methods WO2014066551A1 - Battery backup sump pump systems and methods

Usb battery backup for sump pump