New Here... What is this called?

[benjaminlately]

Back story.

Our family cabin has a venturi jet pump setup. I'm reasonably technical, but I'm not familiar with well systems at all. My grandfather installed everything in the place. He passed away last year at the age of 96. Lucky for all of us he was able to answer questions right up until he passed away.
....
Unfortunately, the system sprung a leak last week an only my mom was around to deal with it. She called a "pump guy/plummer" out of the phone book. I'm not exactly impressed with what $650+ dollars buys you around here (he used one valve that probably cost him $5 and some random consumables like wire. ~4 hours onsite).

I expect an o-ring failed in the following part, but I have no idea what it is called, and I'm not able to get a part number off of it (partly because it is cover with wire, but I don't think I could read it even it it was visible). Does anyone know what it is (possible brand) and where I should start looking for parts and or a replacement.

I think the OD on the top pipe is ~1 3/4" and I think the OD on the bottom pipe is ~2.5"

Is it fixed to the top section or the bottom section? It looks like it comes apart in three sections. I think there are two o-rings on the top and one on the bottom. I assume the 3" tall nub on the left hand side houses the venturi valve. I'm thinking if I get new o-rings and bolts it might be back in safe working order. The cabin is east of the twin cities if anyone happens to freakishly know the area.

The wire somehow stopped the leak, but the so called plumber didn't want to touch the bolts because because he was afraid he would twist them off. I'm fine with that, but leaving something wired together is not a long term solution. As far as I know he left no repair instruction with my mother and has no intention of coming back to finish the job correctly. At this point I wouldn't let him back in the place after seeing some of the other stuff he screwed with that had nothing to do with the problem.

Any help is appreciated. I apologize this is more rant than question.

Thank You.

 

[Smooky]

Two inch Vertical Casing Adaptor or
Vertical Offset Well Casing Adapter


http://www.sta-rite.com/ResidentialProduct_sr_ws_jt_PKG_1_23AP.aspx

http://www.mhsindustrial.com/Vertical-Offset-Well-Casing-Adapter_p_171208.html

http://www.essentialhardware.com/st...ical-offset-well-casing-adapter-2-208075.html

http://www.resiflowlit.com/pentair/pdf/S4520WS.pdf

http://www.deanbennett.com/deep-well-vertical-jet-pumps.htm

http://aermotor.com/pdf/aer_ejectors.pdf



There is a lot of good info in this link if you click on:
Literature

Jets 2/15
http://www.aymcdonald.com/en-US/Adapters-and-flanges.html

 

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[Texas Wellman]

That type of casing adapter used to be a Sears special. I hated them. There's a good chance the larger pipe goes all the way to the footvalve/jet. Be careful loosening the nuts, it's heavy.