So, a few months ago i made a post about a small occasional drip out the back of my machine, nooone replyed, so i thought i must have been letting some water drip in when i filled her up. Well, that leak has groun to a puddle. Taking apart the machine i notice where it is actually coming from, the return line to the pump, right at the plastic joint and the brass "L" joint. the brass piece is male and the plastic is female. I take it apart, turns easilyno resistance at all. I get it all the way out, and there is what appears to be some kind of thread lock (maybe lok-tite) but it is clear. There is also a small plastic "star" on the inside of the plastic joint on the pump that moves in and out as you screw the brass joint in and out. My questions are: Does anyone know if it makes a difference how far it is screwed in(there were originaly 3 threads of the male piece exposed, so i do have a rough estimate on far i should put it in). But is it used to measure back pressure or anything?
What thread sealer should i use? There are no noticeable cracks on the plastic, so given that it was already lose, I assume that is where the leak is coming from. I have med & strong loc-tite, pipe joint compound with teflon, and teflon tape. The pipe compound doesnt dry, and is good for high pressure and temp.
I haven't ever taken mine apart in 5 years 4 months & haven't looked at this junction in a while. It should be similar to a furnace humidifier water in line that has a semi-hard polyethelene white tnanslucent output water line & the brass male nut. This compresses a ferrule against the 45° angled shoulder inside the nut & against the bottom shoulder in the angled plastic fitting.
It then grips the water output line & keeps it securely in place. I'll go have a look on my machine right now! {;-)
P.S. You shouldn't need anything inside this fitting to make it seal., after assembling the ferrule on the water line just past firm finger tightness, tighten down the nut only approx 1/8th of a turn., no more!
Overtightening can destroy the ferrule & or water line interface or crack the male plastic output piece!
P.S.S. I just took my machine apart to get you this pic to show you.
I haven't ever taken mine apart in 5 years 4 months & haven't looked at this junction in a while. It should be similar to a furnace humidifier water in line that has a semi-hard polyethelene white tnanslucent output water line & the brass male nut. This compresses a ferrule against the 45° angled shoulder inside the nut & against the bottom shoulder in the angled plastic fitting.
It then grips the water output line & keeps it securely in place. I'll go have a look on my machine right now! {;-)
P.S. You shouldn't need anything inside this fitting to make it seal., after assembling the ferrule on the water line just past firm finger tightness, tighten down the nut only approx 1/8th of a turn., no more!
Overtightening can destroy the ferrule & or water line interface or crack the male plastic output piece!
Think we are talking about the wrong piece............the part with the line on it is fine. This is actually the piece that is connected to the pump, i realize in my post i said the return line, but i meant on the return side of the pump. the pic i posted, is the inside of the connection i was reffering to. I assume this is the piece you are reffering to?
No, but I see now what you're referring too Rich! I thought you meant the area circuled in red.. {;-D
I wouldn't seal this up so that it's permanent & cannot be fixed without destroying the plastic nose piece. I'd just use a layer, at most two of teflon tape, but not enough to stress the internal diameter of the nose piece & crack it.
P.S. I'm online right now Rich with Aim & added you as a Buddy., do ya want to IM about it?
I don't think I completely understand the problem. But if you ever have plumbing problems and can't do things the right way, you can always use JB Water Weld. It is NSF-rated as being water-safe, and it handles boiling water at 9 bar without any problems. It is very easy to use.
(I have 2 thermocouple ferrules in my group that I tried many times to solder, but I couldn't get it to work, and JB Water Weld solved the problem.)
, seems to have worked, my biggest concern was how far because of that star like thing inside the fitting. it has a spring behind it, so i didnt know if pressure would be effected by it. doesnt seem to leak anymore
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