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About vsaks

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    San Francisco Bay Area, California

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  1. Black deposit on inside of copper still

    @ViolentBlue Did find that some of the black stuff on the towel we were trying to scrub it with, turned bluish green. So I suspect it might be copper salts as you suggested. Will try the PBW followed by acid and again PBW as you suggested. Thanks so much for your help.
  2. Violent bubbling in the parrot

    @meerkat, @Silk City Distillers, the condenser is above the flange so it is 5" above the parrot liquid level (per the attached picture) for drainage. What you see below the flange is the stand, with a drain from the condenser tapering to the 1" tri-clamp tube at the bottom. The simplest solution would be to put a tri-clamp tee to vent up from the bottom tube as @Dehner Distillery had suggested. Ideally the vent to start above the parrot liquid level (in the 5" space between the bottom of the condenser), but trickier to fabricate now that everything is in place. Just drilling a hole in the 1/8" thick stainless steel wall of the stand to the drain without a drill press would be a nightmare. @Southernhighlander will send you an email. We are in San Francisco bay area.
  3. Violent bubbling in the parrot

    @whiskeytango, we are just running water now for testing, and the condensed water is cool to touch. So I doubt any of the vapor is not condensing.
  4. Violent bubbling in the parrot

    @Dehner Distillery, Thanks for the suggestion. Will give that a try.
  5. Violent bubbling in the parrot

    All, thanks for the input on this issue. @Silk City Distillers, Here are some pictures and a video of the parrot/condenser and another one showing how violent the bubbling gets. It seems to be the air in the system which is escaping. parrot bubbling.mp4 @PeteB, if I bypass the parrot initially, I am wondering if I might miss the initial cut-in for the heads. Also I won't know the temp for the condensate to adjust the cooling water. @Southernhighlander, It is a bunch of tri-clamp connections. However I wonder if the air vent will have to be somewhere higher than the height of the jar so air can escape above the fluid level. @GeekSpirits, lots of cooling water running. @meerkat, 1 inch pipe coming down from the condenser. As the video shows, it seems that the air builds up and eventually breaks through.
  6. Violent bubbling in the parrot

    The output from the condenser comes straight into the parrot, with a bypass valve on the bottom. I'll post a picture later today when I am back on site.
  7. We are testing our new production pot stills/condensers with water and there is violent bubbling/turbulence when the condensate starts for the first 10-20 minutes. I am assuming this is dissolved air escaping, and trying to figure out how to eliminate it before the parrot. We have air vents (to vent air) on the steam jacket, but the still is closed except for a 0.8 psi press relief valve. This is puzzling as I have experienced nothing like this in the small 5 gallon still used as a proof of concept. This is so bad that it would have broken any hydrometers/thermometers in the parrot. I suspect this would happen with CO2 and air dissolved in wash runs too. Do we need to put a vent before the parrot ? Or is this a technique issue, because we'd run it slowly initially to prevent the still puking (due to the foam) ?
  8. Black deposit on inside of copper still

    I am worried that this might be a remnant of the manufacturing process which might contaminate the product, so wanted to clean it beforehand.
  9. Black deposit on inside of copper still

    Thanks. What concentration of citric acid should I try ?
  10. While testing our still we boiled some water from the water softener. Now there are black stains on the inside of the still. This did not happen earlier when using hard water. Has anyone else experienced this and any tips on how to clean this off ?
  11. Quick connect/disconnects for hoses

    What gaskets do you have in your camlock with high proof alcohol ? Most of the camlock fittings I am looking at seem to have Buna-N gaskets
  12. What are people using for connecting hoses/pumps to tanks ? We are using tri-clamps but there are cases where we have to move the pumps between tanks. Getting the PTFE gaskets to seal is not as simple as I thought, and I don't relish the thought of doing it several times a day. High proof alcohol, so I don't want to use other elastomers like BUNA-N/Silicone. One option I was looking at was these quick disconnects. Made of SS. But the O ring inside is probably rubber. https://www.morebeer.com/products/female-stainless-steel-quick-disconnect-wbarb.html?site_id=9
  13. Connections on G70 pump

    Michael, Do you have these G70 barb fittings in 3/4 in stock ?
  14. Connections on G70 pump

    Do you know where I can buy the 3/4" fittings for the pump ?
  15. Connections on G70 pump

    Paul, I already bought two of the pumps from you with 5/8. So can I purchase the 3/4 for them ? I can't find the fittings on your web-site.