I have the white plugs to screw into the back of my extractor for the holes not being used and I put teflon tape on the threads but they still have vacuum leaks around them .... is there a better solution to this?
Extractor plugs
I have the white plugs to screw into the back of my extractor for the holes not being used and I put teflon tape on the threads but they still have vacuum leaks around them .... is there a better solution to this?
2010 - 28 taps, homemade brick arch
2011 - 421 taps, 2' x 6' homemade evaporator
2012 - 276 taps
2013 - 385 taps, new 2' x 6'
2014 - 600 taps, new 7" short bank filter press
A plumber at work gave me a couple rolls of premium teflon tape. What a difference. Thicker and I used way less.
I had trouble with my threads not sealing on my RO at the vessel cap. Used this teflon and no more leaks.
The pink teflon is thicker also.
When I was putting the fittings in my releaser I did notice that you have to be careful to get them threaded in properly.
It's easy to get them cross threaded. if it's hard to turn after 1 turn then take it out and try again.
I found they sealed the best when I got them in about 1/4" past the inside face of the pipe. So basically when I saw about 1/4" sticking through on the inside of the releaser.
Last edited by Bricklayer; 01-31-2018 at 04:18 AM.
600 taps on vacuum
Lapierre mechanical Releaser
CDL electric releaser
2.5 x 10 CDL Venturi ( new for the 2024 season )
Home made modulating auto draw off
Homemade RO 2 x 4" membranes
CDL 16 x 16 bottler
Wesfab 7" filter press
Delaval 73 vacuum pumps
12 hives of bees
I think that you should be also using food grade pipe dope. I was told years ago that especially under vacuum, teflon tape alone is not adequate. Every threaded fitting I use gets both teflon tape and food grade pipe dope.
Joe
2004- 470 taps on gravity and buckets
2006- 590 taps on gravity and buckets 300 gph RO
2009- 845 taps on vacuum no buckets, 600 gph RO
2010- 925 taps on vacuum new 2 stage vacuum pump
2014- 3045 taps on vacuum, new 1200 gph RO
2015- 3104 taps on vacuum
2017- 3213 taps on vacuum
3' x 10' oil fired evaporator with steamaway
Plugs
Perfect, thanks for the tips
2010 - 28 taps, homemade brick arch
2011 - 421 taps, 2' x 6' homemade evaporator
2012 - 276 taps
2013 - 385 taps, new 2' x 6'
2014 - 600 taps, new 7" short bank filter press
A word of caution on Teflon tape and pipe dope. They also act as a lubricant which can lead to over tightening. I have cracked more PVC and even cast fittings from SNUGGING the fitting up. Pipe fittings are a tappered so they can cause stress cracks that appear over time.
I wouldn't use Teflon tape on ruff or malled fittings because it balls up and fails to seat. Pipe dope with Teflon additive will seal better under the pressures of vacuum.
Agree again, I was told years ago to never use teflon tape on plastic, It's too easy to over tighten and cause damage. Use a good thread dope containing teflon, and do not over tighten.
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.
I fought this for years on plugs I was sure I would never use. I finally gave up and use pvc cleaner and cement before screwing in. Problem solved
William
950 taps
3 X 12 Thor pans on a Brian Arch
CDL 600 expandable
I have had luck using plumbers putty rolled soft and wrapped around pipes/plugs and an electrical entrance on my home built extractor. Worked better than I thought it would.
2.5X10 HE
600 RO
Vac
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