How Basepump Works:

Basepump Ejector is mounted on the ceiling joist above the sump, unaffected by scale, corrosion, clogging, or debris.

A PVC pipe with a screen on the end extends from the Ejector down into the sump.

For Outdoor Installation the separate discharge pipe from Basepump goes directly outdoors through a hole in the wall.

For AVB installation, the separate discharge pipe slopes down and away from Basepump for free-flowing drainage.

For Indoor Installation the discharge pipe from the main pump is used by Basepump for it's discharge pipe.

A float is mounted in the sump pit above the normal high water mark. Under normal conditions, your main electric powered sump pump will handle all the pumping duties.

When water rises higher than normal for any reason, the Basepump float in the sump is lifted and hydraulically activates the Basepump Ejector on the ceiling through a pressurized plastic tube.

As municipal water rushes through the ejector, it creates a powerful suction force which causes the PVC pipe to act like a giant soda straw, drawing water up from the sump and ejecting it outdoors.

As the water level falls, the float drops back down and a pre-set timing control keeps the ejector running for about 30-45 seconds before shutting off the system. This allows a full pump-down of the sump, unlike some other pumps.

No impellers, turbines, motors, or mechanical parts to wear out.

No batteries, wires, or chargers to monitor, tend to, or replace. Ever!

Fully automatic operation. Works whether you're home or away, for as long as it is needed.

Basepump can supplement the primary pump when water flow is excessive.

Installs and performs independently from the primary sump pump system.

Reliable, heavy duty, and durable.

Discharge Relief Tee keeps Basepump working in cases when the discharge pipe becomes frozen or clogged.

Easy, step by step, illustrated instructions are included.

Manufacturer, Pump Model → Feature ↓	Base Products Basepump RB750	Base Products Basepump HB1000	Base Products Basepump CB1500	Liberty Pumps Liberty SJ10	A.Y. McDonald Guardian 747H2O	Zoeller Homeguard 502
Pumping rate at 10 feet lift	750-900	1,000-1,400	1,500-2,000	654-966	513-750	251-493
Water usage to sump water removed	1 Gal to 2 Gal	1 Gal to 2 Gal	1 Gal to 2 Gal	1 Gal to 2 Gal	1 Gal to 1 Gal	1 Gal to 1 Gal
Water supply pipe size	1/2" or 3/4"	3/4"	3/4" or 1"	3/4"	3/4"	3/4"
Water Alarm included	Yes	Yes	Yes	No	No	No
Minimum Sump Diameter	10"	10"	10"	18"	18"	18"
Float Type	Hydraulic	Hydraulic	Hydraulic	Mechanical	Mechanical	Mechanical
Can pump empty the sump?	Yes	Yes	Yes	No	Yes	No
Able to Install in Radon-Sealed Sump?	Yes	Yes	Yes	No	No	No
Warranty	5 Years	5 Years	5 Years	2 Years	N/A	1 Year
Installation kit available?	Yes	Yes	Yes	No	No	No

When comparing, it is essential to do your best to compare accurately.

	Manufacturer: Base Products Corporation specializes in Backup Sump Pumps. It's not a sideline for us.
	Sizes: Three models to choose from: Essentially "Small", "Medium", "Large".
	Pumping Rates: Basepump has the highest pumping rates in the industry.
	Efficient use of water: 1 Gallon of city water removes 2 Gallons of sump water, at 10 feet and 60 lbs PSI.
	Easy-to-Use installation kits are available for the water supply and the suction and discharge.
	Water Alarm: Included with every pump to warn homeowner of high water.
	Small Sumps: Basepump only needs a small area of the sump in order for the float to operate.
	Float Action: Reliable hydraulic operation with no moving parts and NO electrical parts. Adjustable for pumping down the sump. This is key when comparing pumps. You don't want a pump that turns on and off quickly or one that only maintains a water level. You want one that can empty the sump on each cycle.
	Radon Cover: Basepump can be installed safely and easily in a sump that has a sealed Radon Cover.
	Warranty: Longest warranty in the industry. We stand behind what we make.
	Cycles: Basepump can be set to run long enough to pump down the sump each time before turning off.