Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: Claims " low pressure cut-off at 40 PSI" but that cannot be true.   HOW LOW does the INPUT pressure prevent pump from working?
Document: If you need to use this on an agriculture water well, get the version WITHOUT low pressure cut off (looking at my spare one its marked SQ-D 9013FSG2J20). Also this version is MORE prone to problems in near freezing weather, also if you must field adjust PSI this device has multiple springs and is a bear to keep in the working range.There are other ways to protect against leak issues, This causes more problems than it solves.
I have been using this product and its predecessors for over 40 years. It does its job reliably. Use pennyroyal oil occasionally on the feeder pipe to discourage ants. They cause arcing of the contacts, sometimes causing unreliable connections and arcing damage to the contacts.Use non-flammable insulation for freeze protection, since arcing can ignite rags.The low-pressure cutout also replaces my earlier $200+ Warrick sensors to prevent pump burnout when there's no water to pump. It has saved my pump several times.
I bought a tankless water heater and couldn't get the heater to turn on because of water pressure.I was told I would have to buy a separate pump at a cost of over $100. Someone that works at alocal hardware store told me if I replaced my pump switch to go up from 30 to 40 psi it would maybehelp. So I ordered this switch. It worked. It was real easy to replace my other switch and I got thelow pressure cut off in case I had a leak.
This is a replacement. I wouldn't have anything but this switch. If there are any problems with our sprinkler system that causes more water to be used than our pump will supply, the pressure goes below 30 PSI and the switch shuts the pump off until it is manually reset and we know we have to find our problem. This switch is also good for a low producing well. When more water is drawn than the well produces, the pump is shut off.
I have to replace these pressure switches on my well ever 3-4 years. The components corrode or get gunked up internally, and eventually I end up with no water when taking a shower. No big deal, it is part of living the rural life.All the ones I have picked up from the local hardware store required quite a bit of adjusting to get set at the 40 PSI 'on', and the 60 PSI 'off'. This one was set perfect out of the box!
real easy to wire and hook to pipe .everyone should use  one with low pressure cut off. if i would have had one  i would have saved a lot of money i spent on a new pump!
I have used this type before and have found them to be great for my application. I use this type of pressure switch in the tropics and have found it to be a pump saver. With the low pressure cut-off function, when my tank goes empty it cuts the pressure pump off. This happens a lot in third world countries where you depend upon a city water system as your main source for water and you never know when they will cut off your supply.
This low pressure cut off switch solved a problem we had at a remote pump. The pump at times due to agricultural pumping in the area would lose its prime causing it to run for a long period of time before being discovered. This switch shuts the pump off and saves it from damage.The down side is that water usage at this site sometimes exceeded the pump output for a short time. This caused a temporary low pressure condition that also shut the pump off.
This pressure switch replaced one that had corroding terminals as well as pretty silty inside. I purchased this one because of the extra safety of the low-pressure cutoff. Wired up easily and the on/off pressures were easily adjusted. Just make sure of the on/off pressure you need for your application as there are several different models. This is a 40 on 60 off model.
It was great to find a pressure switch with a low cut off.I have had several irrigation pumps lose a prime for one reasonor another.
Answer: yes