just residential use? the 2 pipe jet and tailpipe setup should work, when it levels off it will just pump as much water as the well makes. no deeper than you are pulling water from, i'd personally use a 2-pipe 4" well seal with single stage goulds either j5 (1/2hp) or j10 (1hp) horizontal pump...
thats the main reason deepwell pvc drop isn't preferred in steel wells. sometimes just messing with it can get the check valve working. push down some (beat it with something if you need to) and pour water down and around to see if it holds. if so hook it up and let it rock... if not cross...
run some water and start bypassing control valves 1 at a time to see which one (or any or all) is the big restrictor. depending on water quality it might be time for them to be serviced.
when power is off and tank is drained, open a faucet and use a compressor to pump it up to whatever you need. then shake the tank, if its empty you are ok. turn power back on and close faucet.
next time it happens.. before you wiggle the wire, pull out a volt meter. check the power wires going into switch then check wires going to motor so you will know if the problem is to switch or from switch to motor.
Back then rotary rigs were just catching on, didn't have grouting laws etc. probably just caved in over time. I wouldn't waste my money on a ton of hole plug. I'd dump a few bags in and fill the rest with fill dirt. jmo
you don't need to worry about a csv if there is no tank, pressure switch, etc. its just a pump in a well periodically filling a holding tank. for this application, i see no difference whether there is no check valve or multiple check valves.. other than the cost.
from what you have said, i would go with pvc, no torque arrestors (ever), and only the one check valve thats built in the pump. personally i would replace 30yr old wire. being as its only filling a cistern, i agree with you that less water and longer run times is the way to go. likely 1/2 or...
you're looking for what looks like a submersible pump end attached to a jet pump motor. something like this..
i think i have 4-5 of the 10gpm 1/2hp berkeleys sitting in my shop collecting dust.
is it pvc well casing? gpm depends on how much water the well makes.. cycle time also depends on well/pump production and tank size. but yes a mse7 should pump much more than 4-5gpm if the well will give it, especially with a 16' water level. the pressure regulator can/will restrict flow as...
I've never heard of having too much pressure on the casing either. Got lots of wells with 600+' of PVC in them. Think that might be one of those "if u can't dazzle them with brilliance, baffle them with bs" things. If one is using a storage tank, extra pump, with a well on limited production...
my setup is pretty much what you are looking into. aerators are common around here, and they suck.. as u have learned. i haven't pushed them for years. personally i wouldn't use bleach, or any other chemicals to keep up with. i'd use one of the filters that injects air. water-right makes...
we almost set it up, coulda had free passes to show and all. i been spending too much money though.. didn't follow through. probably a good thing from what i'm overhearing about christmas shopping.
like wetboots said, J10 is top of the line but nothing cast iron and full of water is gonna stand up to a freeze. did you call around to any drillers/installers to see what they had laying around? i know ive got a couple used pump ends for that motor, good chance some others closer to you do...