yeah, and common to plumbing I had to buy twelve fittings to get from ¼” npt to Pex ¾”.
Thank you sir!
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…too funny. Yea, if you are at the big box store, they can get you from one to the other but you have to pass the bank before you get there.
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is this the DXF file?
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That is the new WTF file! We are having the historians research it. It is either ancient Cajun or more recent Caveman. I believe you can see some charcoal dust/smudges.
Edit: “Tom”, where is he when we need him? He will give a ruling on it. And it will be based on sound principles.
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sorry gents I love some good sarcasm! 
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Personally, I would not have drafted that drawing out in CAD either. We are just teasing.
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Are you going to post this DXF to fireshare? Maybe you could post it here.
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the force is strong with this one, pony 72.
Looking good.
I currently do not run a draining setup but if I did I may consider one that can automatically fill and drain with a flick of a switch. I drew this up so there maybe some errors but I think the concept is sound and it is relatively simple.
edit : moved a power path in the picture
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I’m very cautious about the whole air pressure in a plastic tank design. It works well till it doesn’t. I’m sure you guys have all seen a tank that is not rated for the discharge of the air compressor explode. A safety valve of some sort would be a welcome addition.
Mrs. BigDaddy was cooking pinto beans in a pressure cooker many years ago. The safety valve failed and shot out of the pressure cooker. Needless to say, every single pinto bean exited that pressure cooker through a 1/4 hole. It was very eye-opening. Not to mention, it took 3 or 4 coats of paint to repair the ceiling. 
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my wife tossed the pressure cooker after watching similar videos. I’m not concerned about the plastic tank pressure. I am from the common sense generation.
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I get it. My engineer comes out sometimes. Just for your info 6.9 psi is the burst rate on a square plastic tank. I’m from that generation too. I only burned my hand on the stove as a kid 1 time.
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I 100% agree.
The tank here is open to atmosphere through the filling check valve. If there was too much pressure the air would bleed from the drains. But if the check valve became plugged a problem is possible, maybe some a relief on the top of the tank is in order.
The pressure here just enough to overcome the head pressure of the water plus a little to get it moving .
Thankful it was not a eye losing experience.
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I pressure tested it! working as planned
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Good to hear. I know you got this.
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I wound up short two pex rings. One flaw in my design is I need air pressure relief for the tank. I purchased the extra valve, but I’m short two darn rings!!
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never fails. At least its not one short.
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