Absolutely do not weld inside a tank without respiration gear. Fume levels will be much higher in the enclosed space than open air, even by thousands of times. Chemicals are absorbed through the lungs more readily than any other way. This would be highly hazardous to your health and likely to cause permanent and debilitating illness. I had a friend, antique dealer/restorer who suffered nerve damage paralysis from spraying finishers. At 1st people assumed he was drunk. He ended up in a wheel chair and died not long after. Didn't even make 50, left a wife & 2 boys. Just don't do anything like this ever, nothing is worth that price. Patch the outside only.
Anyone doing this type of repair that is done inside a tank be aware of the extreme danger of confined spaces. You can die quickly and not see it coming. You may not think there's fumes etc but are risking your life. To lower the risk, have another person on the outside with something to put a large hole in the tank quickly if the worst happens and you collapse. Obviously use a fan in the tank to ventilate it but prepare for the worst. An axe etc is probably a good thing to have handy. Tanks can be replaced but not your loved one/s. Rescues from confined spaces often result in the rescuer dying as well as the other.
I accidently drilled a 5/16 hole in the gray water tank on my RVG (Yes, I know lets not talk about how!) All I had to do was run a 3/8 tap into the hole and put in a 3/8 bolt covered with silicone. The tank was plenty thick Worked great! Dave
Good thing it's just grey water and the epa says grey water is ok to dump on dry ground. I argued with a cop for almost an hour before he found out he was wrong, because I leave my grey water open and I live on the street
@@riteshjhimlah1807 I have no experience with that but my guess would be no because of the way PVC balls up when it is heated. I would also think PVC would require more heat to soften it up.
Probably a good idea to have a fan at the opening to circulate air when you are inside. Not trying to preach or be nitpicky but easy to run out of air and not realize until its to late.
one thing I learned whilst working on gas pipe replacement in the UK is to scrape the plastic with a stanley blade or sharp knife to ensure the that teh plastic is clean and green that is no contaminates on, in the polymer to be welded.
Where’s the other video, I’ve got the exact same problem in the bottom center of a 2200 gallon white pe tank never been used but the hole is 6-7”x3-4” I thought of adding a plate with a 2” treaded coupling for a drain, it’s gonna be for rainwater collection for the house
Joe N500 must not have watched the video. This WAS done from the inside as well as on the outside. It wasn't done with glue but melted polyethylene. Seems pretty permanent to me.
How did you get into the tank? You must be an alien or sutin (inspired by ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-7gQrjweCqE8.html :-). Nice tutorial - I have this kind of gun (not been out of the pack yet) and I'm looking to buy a lot of used IBCs which could be damaged. Thanks for posting.
It looks like a puncture wound to me, not a crack. My tank has a 40” crack in it. We’re going fix it but don’t know how, Maybe some form of this repair, I have a few soldering irons.
Hi, thank you for that video. You said that in other video you will show how to seal bottom part of water tank. Can you send me link where i can Find it?:)thx in advance
Yea, it was interesting shooting this video. It was interesting climbing into the tank as well. If I were to gain another two pounds, I wouldn’t be able to fit inside. But it was worth buying the tank so cheap and fixing it up. Saved many hundreds of dollars.
I apologize for the delays. Summer slipped away from me and it is now too cold to do the work (7 Degrees F right now). I will be doing to work and video in the April 2018 timeframe. Again, sorry for the delay.
Please do. If you go into the tank like I did, please consider forced air or breathing apparatus of some sort. It has been pointed out that oxygen can be depleted quickly in a tank and melted plastic is toxic.
Soooo.... did it work? I mean, when you filled the tank, was there zero leaking?? I am pretty sure the tank I bought (at auction) may have a similar gouge, but in the bottom/base/underside. MUCH more water pressure there than up near the top edge, so I am really curious how this worked out for you. Thanks.
This worked great for me. The tanks are full right now with no leakage at all. I have another tank I'll be repairing in the next couple of weeks that sounds similar to yours. It looks like someone took a chainsaw and cut a line at the bottom corner of the tank right where it curves under. I'm going to repair it relatively the same way, but it will require a lot more material to fill in the hole. Keep an eye out for the video - likely coming in September. I'll put it in the system I have and offload water from the other two tanks and pressure test it before I put the video out.
Great job! I’m new to plastic welding and this is a big help! I have a small pond and I’m going to use mine to build filters and stuff like that! New supporter here!
This isn't a bad attempt, but save your self trouble and just call a local plastic welding service and get it done properly, so you can go back to not worrying about your tank.
This can't hold for long. If the repair were from the inside, it might have held longer. Since nearly no glue would stick to Polyethylene, it is an issue repairing it from the outside. I tried that in the past with various methods, nothing really functioned.
Hi Joe, I invite you to re-watch the video. The repair and the screen support was put on from the inside. The repair itself was done with a polyethylene welder, which is not a welder, but rather melts the plastic together. I did the repairs on the outside as well, but like you said, the real support was on the inside.
I think, what you describe is the only way that it may hold for some time. When melting it from the inside, the pressure pushes the crack to be closed. You use the liquid pressure in your favor. Melting Polyethylene is the only logical way to somehow repair this crack, because most glues don't stick to it, except if there is a glue with a solution that melts it. I don't know of such a glue with such a material.
