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SJ10 Features: -Pump system.-With a compact high efficiency design, removes 2 gallons of sump water per 1 gallon used.-Protect basement in the case of a power outage.-Powered by your municipal water supply and requires no electricity to operate.-Fully automatic, arrives completely assembled, and comes backed.-Pumping performance varies with inlet water source pressure and pumping head.-Requires an uninterrupted water source to operate.-Accepts 20 PSI up to 100 PSI inlet supply pressure.-High-output flow rates.-Works off municipal water supply.-UPC approved.-Adjustable stainless hose clamp for easy mounting.-Built-in screen with removable foot valve.-Built-in check valve at water inlet.-Additional backflow protection is required.-Discharge: 1 1/2''.-Water inlet connection: 0.75'' NPT.-Maximum fluid temperature: 130 F. Construction: -Constructed of durable PVC. Dimensions: -Dimensions: 21.6'' H x 5.1'' W x 14.5'' D..
From the Manufacturer
The SumpJet (Model SJ10) is a water powered back-up sump pump that will protect your basement in the case of a power outage. This unique product is powered by your municipal water supply and requires no electricity to operate. With a compact high efficiency design, the SumpJet removes 2-Gallon of sump water per 1-Gallon used (based on 5-Foot lift). The SumpJet is fully automatic, arrives completely assembled, and comes backed with Liberty's standard 2 year warranty. The SJ10 requires an uninterrupted water source to operate.
beverly
2025-07-16 12:19:18
When I lose power to the house, it usually happens because of flooding in the area. Though my battery backup system was fine for a short period of time, and I if I would have time to get my generator running for long outages, this system removes those limitations. This will need no human intervention even when we are without power for an extended period of time.The system works as advertised. I would not use this as my primary pump because it uses public water to run, but it's an excellent choice as a backup.I still have to cover the pit because I have a radon issue, so you can ignore the large white pipe.I added a water hammer arrestor and a fill valve so I can test it, so you can also ignore all the blue pipes too.There is a one-way check valve for the water supply. That check valve is not necessary per the instructions.There is a discharge check valve on the primary pump, but per the instructions you do not install a check valve on the JetPump because it's unnecessary and would reduce performance. Re performance, I used 45 degree turns rather than 90 degree turns. If you don't have space, I don't anticipate using 90 degree turns would be an issue, it would simply be less efficient. I had the room, so I opted to maximize efficiency.The only expected negative is that it will require more physical space in the pit, and I will have to work on how best to seal the pit because of the radon exhaust pipe. Since I have the room, I will simply be building a box around the entire thing and using roofing rubber grommets around the PVC pipes to help make a good seal.Again, excellent Backup System, I would still use a traditional sump pump for the primary system.
Hell Bound
2025-07-04 17:15:19
I recently lost power 3 times in 5 days (Two due to weather and one due to a car hitting a utility pole) so I decided I needed a backup sump pump. I did not want a battery backup pump because of the limited backup window so I decided to go with a city water pressure pump. This pump comes fully assembled and is easy to install for DIYers.Just be warned that this is just the pump only and there will be an additional cost to install. It's cost me an additional $100. I used PEX and SharkBite push to connect fittings which is why the additional cost was so high. You can reduce the cost by using PVC or copper water lines vs. the PEX tubing. You can also solder copper fittings instead of using SharkBite push to connect fittings to bring the cost down. However, if you can afford it I recommend the SharkBite push to connect fittings and PEX tubing since they are super easy to install.The pump evacuates at a rate of 19.8 Gpm @ 60psi which averages 1 gallon of city water to 2 gallons of water pumped. The rate however will be affected by the water pressure. The higher the pressure the faster water can be pumped. The instructions recommend a 3/4" water line to insure there is enough pressure to run the pump. My water lines are 1/2" right from the water meter so that was not possible for me but my water pressure when tested was 75psi and works fine. The pump needs at least 20psi to work and should not exceed 100psi. If your water pressure exceeds the recommendations you will run the risk of leaks which can quickly fill your basement up with water. You will also need to purchase a check valve to prevent water from flowing backwards.Once installed it worked as advertised. It pumped water a little slower than my main electric pump but it still can keep up. I plan to test this every once in a while to make sure it's still working just in case of an emergency. My Grandmother has one at her house that has been working without issue for years. She has a tree in her yard that is always taking out the electric so it is a necessity. Hopefully mine will last a long time as well.Pros:Easy to installComes fully assembledClear easy to follow instruction manualPeace of mindCons:Additional cost to install (This cost is involved with every backup pump on the market)
N2ND
2025-05-13 11:10:34
My house is in an area with a high water table. When it rains hard my sump pump has quite a bit of water to move out of the pit. We recently had a short power outage and within 15 minutes the water was at the top of the pit. That was in spite of my battery backup sump pump that I had installed. Luckily, everyone was home and we managed to stop a catastrophe by using a hand pump to pump the water into buckets that we took outside.As I read further about this after, a common complaint I found was that the battery based backup pumps do not move water anywhere near as fast as a standard pump. Clearly in my case it couldn't keep up with the water entering my sump pit during a hard rain.I decided to try a water pressure based backup pump. The Liberty SJ10 looked fairly easy to install and had good reviews.Installation was fairly painless. I mounted it to the existing 1 1/2" pipe above the old pump. I already had a second drain line that dumps out on the lawn that the previous owner installed so I used that. That part of the installation was more or less like any standard sump pump. I used PEX to make the 3/4" water connection which was easy enough as the water meter was nearby. I did have to modify the sump pit cover a bit to accommodate the new pump.I am happy to say that this is a powerful pump. It can take water out of the pit nearly as fast as my main pump (1/2HP Zoeller). I also installed a water level alarm in between the two pumps so I will be alerted if the main pump stops working. I feel much better knowing that my backup pump will be able to keep up with a heavy rain.One thing to keep in mind is many municipalities require a back flow prevention device to be installed ahead of one of these units. You should also think about a water shut off valve to make future maintenance easier.UPDATE 8/2014: This has been installed for about a year and it hasn't been used outside of tests I have run. Yesterday we had a ton of rain and associated flooding nearby and just like the incident previous with the electric backup pump my main pump couldn't keep the sump pit clear. My water alarm went off so I went downstairs to investigate and was pleased to see the Liberty back up pump happily pumping water out of the pit. This went on for about an hour so without a doubt the Liberty pump saved the basement from water damage. The Liberty pump was cycling every 2 minutes or so and quickly emptied the pit each time.
idrum
2025-04-06 17:15:17
I ordered this item having never heard of water-powered back-up sumps before. I had a battery powered one but was always on edge with it when away. I researched the water-powered ones and went with the Liberty. I had to run a new water line off the old one. I like to shut of the water to the rest of the house while away but needed one to the sump always on so ran a new line after the water meter and installed a ball shut-off on the old line so that I could shutoff the rest of the house. Attached are the photos of the installation. I tested the pump several times and it seems to run well. I also installed an extra check valve for the water line. I also have to make a new cover for the sump crock.
Customer
2025-02-25 17:43:59
This should work in an emergency. Quiet operation and for every gal.on used it takes out 2 gallons according to the information issued with the unit. Not hard to install and YouTube sure has enough How To videos.
dave
2024-11-30 13:23:31
It came fully assembled which is nice. You will only need a few connections and a backflow preventer to complete the install. Total cost to install was about $650. The beautiful thing about this item , is that no power is needed to run it. Recently i went though no power for over 12 hours. A backup battery system only last for 8 hours. I am lucky i have a generator that creates enough power for a few items. Other wise basement would be flooded. With this system you just need water pressure. I can be away from home and not worry during power outages anymore. Small price to pay for piece of mind, Not to mention you won't need to buy a $250 replacement battery every 5 years or so.
Michael W.
2024-11-29 14:45:10
These are great, and very simple backup sump pumps.I did have a minor leak at the water inlet, and when re-tightened only got worse.After contacting the pump manufacturer, Liberty Pumps, they sent me a replacement. This is excellent service, illustrating how this company truly stands behind their quality made products.
John Gordon
2024-11-27 14:39:12
just works
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