Liberty Pumps SJ10 - SumpJet® Water Powered Backup Sump Pump (990 GPH @ 10\')

Hi Keith. This system requires a minimal 20PSI but 30PSI for optimal performance. That said, the total vertical discharge head lift and discharge diameter also plays into your total GPM discharge capacity. You might also check the city code for this system as some municipalities around the country have outlawed these systems.

Per the SJ10 manual:

The inlet of the SumpJet® is factory equipped with a SharkBite® push-type fitting. This fitting can be used with various approved 3/4-inch potable water tubing and pipe, such as PEX tubing (ASTM F876, CSA B137.5), copper pipe (ASTM B 88), or Copper Tube Size (CTS) CPVC pipe (ASTM D 2846, CSA B137.6). Follow the instructions below for connecting the municipal water line to the SharkBite®. For more details on using the SharkBite® go to www.cashacme.com.

If you have any other questions, please let me know.

Ina,

First questions first,

How high vertically & how far horizontally are you pumping?

What size basin do you have?

The water powered backup pumps do work. However, they do use a decent amount of water to operate. You should also check with your local municipality to make sure water powered backups are approved.

The battery backup systems are a much more popular pump. They will run off the battery when the power goes out.

Thank you for your interest in Sump Pumps Direct. The pumping capacity on the Liberty SJ10 Water Powered Backup Sump Pump really depends on your water pressure(PSI). Minimum required water pressure for this pump is 30PSI. At 30PSI, you will get approximately 990GPH @ a 10' head. If you water pressure is greater, your pumping capacity will also increase.
If you have additional questions, please let me know.

Depending on the water table in your area and the potential for flooding you could go either way. If your water removal needs are below average, you could elect to go with a low GPH rated battery backup sump pump or water powered backup. Please note that water powered systems will only work with a minimum of 20-40 PSI. They will not work if you draw your water from a well. The typical water powered system would provide between 300-1000GPH of pumping capacity. If you're in a little higher water table that the flooding potential is a bit higher, you may want to consider a battery backup system rated at between 1000-2300GPH. If the flooding potential and water table are very high, you might look at the systems rated at 2400GPM and higher. You should also check with your local municipality to make sure that they are allowed as some municipalities have outlawed them as they do waste water in a sense.

You might try contacting a local licensed plumber or look at purchasing an inline pressure gauge to install at your spigot that would give you a good idea of your water pressure. The 990GPH/10' means that the Liberty model SJ10 will pump water up 10 feet at a rate of 990 gallons per hour or 16.5 gallons per minute (GPM). Liberty is one of the top manufacturers of pumps in the U.S. and their product is very well built and designed. While there may be better, more expensive systems out there, we currently offer only two water powered backup systems. This and the Bur-Cam model 300402.
Depending on the water table in your area and the potential for flooding, you could go with a water powered or battery backup sump pump system. If your water removal needs are below average, you could elect to go with a low GPH rated battery backup sump pump or water powered backup. Please note that water powered systems will only work if you have a municipal water supply with a minimum of 20-100 PSI. They will not work if you draw your water from a well. A low output system would provide between 300-1000GPH. If you're in a little higher water table that the flooding potential is a bit higher, you may want to consider a battery backup system rated at between 1000-2300GPH. If the flooding potential and water table are very high, you might look at the systems rated at 2400GPM and higher.