That's where a leak detector can help. I had one and it found leaks in vacuum even with a gas engine running just a few feet away. I've since sold the leak detector, but there are detectors available online, you just need ones that are portable. Mechanics use floor model detectors, look for a smaller hand held unit. For some reason D&G no longer lists one, that was who I bought mine from, I just sold it a few weeks ago, when I retired from tapping trees.
This one may do it https://www.amazon.com/dp/B000TRJA8M...erz_origin1-20
I paid $200 for mine 5 or 6 yrs ago. This one is about $220.
Last edited by maple flats; 03-28-2021 at 01:30 PM.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.