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Old 12-01-2019, 03:39 PM   #1 (permalink)
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PURE ENERGY (PMI) THOR regulator eating orings.

I've recently picked this up and replaced all of the orings.
But as soon as i put air to it, the piston pops and jumps a few times before leaking. When i disassemble the piston o-ring is in pieces.

I've used buna orings and the recommended Urethane 90 with the same results.

Im using a simple 800 output tank.

Ive plugged one of the reg outlets and put a gage on the other outlet.

I removed the washer from the spring to bring the reg down to a lower pressure, but i still got the same result from putting it back it.

I noticed the online manual mentioning a teflon reg seal between the main body and insert, my reg had a buna o ring in its place? My internals look a little different from the manual.

Any help would be greatly appreciated.




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Old 12-06-2019, 11:49 AM   #2 (permalink)
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I wonder if that teflon seal is harder than the o-ring and is causing it to drag/push in places it shouldn't. Still kind of a weird issue. I assume you have checked the insert for burrs/etc?
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Old 12-08-2019, 09:48 AM   #3 (permalink)
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Is the seat, #2, missing? If so, it'll never seal up and regulate, just keep trying at high cycle speeds.
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Old 12-08-2019, 10:28 AM   #4 (permalink)
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I think flyweightnate is on to something. That o-ring that’s getting wrecked is seeing pressures it never should. O-ring quality/size probably isn’t the issue.
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Old 12-09-2019, 11:57 PM   #5 (permalink)
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Yes seat #2 was not in the reg when I received it. In its place was the small black oring. I guess that my next job will be to find or create a replacement Teflon reg Seat.

Any ideas?
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Old 12-10-2019, 11:04 AM   #6 (permalink)
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Quote:
Originally Posted by LOSANGELESSTERLING View Post
Yes seat #2 was not in the reg when I received it. In its place was the small black oring. I guess that my next job will be to find or create a replacement Teflon reg Seat.

Any ideas?
Do you have any other HPRs kickin' around? Maybe try swapping one just for shats and giggles to see if it works?
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Old 12-10-2019, 02:16 PM   #7 (permalink)
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Try a plastic washer. You should be able to find something suitable at any hardware store.
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Old 12-11-2019, 02:22 AM   #8 (permalink)
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It's been a long time since I've had a thor apart, but part number 2 is your regulator seat and it won't work without it. It is a standard off the shelf teflon oring, it might be a 008. It's a little tough to install because it has to "stretch" over part number 4. Teflon orings don't really stretch, but the tight fit keeps it in place.

The good news is the manufacturer of the thor is still around. They were made by Ninja (before they went by that name). A quick inquiry to them and they could tell you the size. Heck, they might even be willing to send you one.
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