Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: What other plumbing supply I will need besides what ships with this pump? My main water line is 25 feet away.
Document: I finially got this pump installed. I think that there could have been better instructions, like you need 3 check valves one in the water supply line and if you are tieing into the main discharge line then you need a check valve for both the discharge of your main sump pump and the Liberty pump as well.
I'm a contractor and installed these pumps at a few different homes. This pump is very easy to install and has very good pressure. The  pump installs with straps off of the existing 1 1/2" line that runs your existing sump pump. You'll need a 3/4" main water supply to correctly install this pump of the city water. I have only tested these pumps to show the home owner's how it works but it is very impressive.
I am absolutley satisfied with the $300 investment for the unit and plumbing parts. I am also very impressed by the quick support that the company provided me during the installation.Be sure to check with the building department in your town to see what kind of check valve, inspection and periodic testing may be required for the supply line. Liberty recommends that you do not connect to the main pump output with a Y connector.
This is a lot of water, but totally worth it in my opinion. The directions were clear and easy to follow, and the pump arrived fully assembled. The only challenge was tapping a 3/4" supply line into my existing plumbing, but I was able to pull it off on my own. I'll rest a lot easier from now own knowing this is in place. Best insurance policy I ever bought.
Fabulous! I haven't needed it yet, but I'm pleased that it is installed and have peace of mind that a back up is in place. Hopefully I never have to empty the wet contents of my basement again. It was eay to intsall because I had a water supply line with a spicket immediately over my sump pump well. Easy peasy. I never did any plumbing and cant't believe how easy PVC piping is to work with!
How long will this unit last??? Great question. Hopefully, a long time - the quality rating is good. Tip #1: order a 3/4&#34; backflow prevention valve when you order the SumpJet - you need one and if you're going to pick one up at retail you'll probably have to get it at a plumbing supply place (as in, not Home Depot).
I've installed 6 of these pumps. Last one is the first I purchased through Amazon (to save a few $) Others purchased through local plumbing supply. This last one, the entire float shaft just fell off once water pressure was applied during testing phase. It's secured by a small threaded plastic joint. For such a vital connection, these components should be metal, and/or of larger diameter and heavier gauge.
It took the plumber a few minutes to figure out how to fit it in, in the end it works great. It pulls water out of the sump with surprising speed. Even the plumber was impressed. The Amazon price was about 1/2 of retail. As far as installation, I'm fairly handy, but when it comes to connecting to the main water supply, I leave it to the professional.
It requires a custom-run 3/4&#8221; cold water line to the pump and it can be tricky to get situated in the crock. You&#8217;ll also need to install a separate discharge line. While I&#8217;ve read others have merged the lines for their primary pump with this one, the manufacturer recommends against this.Installation took a few hours for my experienced plumber friend.
I  need a reliable back up system to protect the valuables in our basement. I like that it is not even in contact with the water in the sump crock unless the primary system fails. Also the simple concept with few moving parts and little to go wrong.Be sure to follow instructions and not connect it to the primary pumps discharge line. I experienced back pressure on my primary pump connection to the storm drain during a heavy rain and deep thaw event.
Answer: yes