Submersible pump.

[fixitflav]

So have you gotten it working yet?

That's not the issue. It's already working, he wants to know whether it's OK to run it like his wife wants to.

 

[skoronesa]

I thought the issue was that he had it hooked up so when she was using it and stopped spraying the pump was deadheaded until she got to turn off the pump. Or he had a flow switch but it wasn't working right.

 

[Bogart]

The former. I tried the flow switch setup but it did not work. Will try to get the pump out over the weekend to just at least have a look at it.

 

[fixitflav]

I thought the issue was that he had it hooked up so when she was using it and stopped spraying the pump was deadheaded until she got to turn off the pump. Or he had a flow switch but it wasn't working right.

Yes, you're right, I take that back. Reading the original post again, he's still trying to prevent it, not considering whether or not it's a problem. As I said, I don't think it is, for the minute or 2 to get from starting the pump to opening the spray trigger.
For a flow switch to work, need a timer in parallel with the flow switch, set to a bit longer than it takes to get from the start button to the trigger. So the timer starts, the timer contacts close and the pump runs. If the flow switch contacts close before the timer contacts open, the pump keeps running. If not, the pump stops when the timer expires. Downside is the pump stops when the trigger is released (unless more features added to the circuit). Seems a lot of trouble for something this simple. Maybe a module is available off the shelf.

 

[Bogart]

Yes could get complicated regarding adding this or that to overcome one problem or another. Also though the walk from the well to the spray head at most will be 30 seconds approximately I cannot guarantee she will not stop spraying, shut the spraygun off then disappear off somewhere else before remembering to go and switch of the pump.😱

 

[skoronesa]

I think you should set up just like any other well pump set up, at least the ones that are common here in the states.

Pump fills up expansion tank which is on a tee, the pressure switch shuts it off at when it is full, as she uses it and the pressure drops low the switch kicks it on.

The only difference would be that you could bury the pressure tank and I guess use a smaller than normal tank. Surely you could fit a 20L tank somewhere. If you bury it just put the tapping side down so that you can drain it and repressurize it with air if it doesnt have a bladder or the bladder goes bad.

Then you wouldn't have to worry about her forgetting to turn it off.