Ray, Do you have a US supplier for either of these fittings? The Jentro fitting looks great, the Blueseal16 does not look like it would have much of a pressure rating. I did not find a specification.
What do you all use for drop pipes for well pumps? I have a 260ft deep well with galv, but the first batch corroded through, must have been a really bad batch. The second batch has been fine for many years. I can't bring myself to use PVC which is most common, I just have seen too many issues with it. Stainless is really expensive and hard to find threaded lengths, so I used very high pressure Poly. When it's rated for 300psi it has a very thick wall and is hard to get onto fittings, but is light weight and moderately flexible. Brad On Sun, May 26, 2024 at 11:17 AM Ray Walters via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Hi Brad; > > I've seen a lot of leaks with barb fittings on poly pipe. I just replace > most of the poly plumbing at my place, because I just couldn't get it to > stop leaking. Black poly pipe is the lowest cost per foot, but not quite > bomb proof. Barb fittings are really more suited for irrigation under 40 > psi, where leaks are just part of the irrigation system. Also, if the pipe > is exposed to sunlight, it can degrade and split open. Your described setup > would have sections above 100 psi, and that will really drive leaks. There > are compression fittings for the poly pipe, which are better. Here are > some examples: > > [image: PE pipe compression fitting for drinking water? Choose Blueseal16 > - SAB spa][image: Jentro Fittings sdr11 klem draadstuk] > > Barb fittings would probably be fine towards the top at the storage tanks, > where the pressure is much lower, but at the pump, and top of the well, > where the pressure is over 100 psi, I'd be using something better. > > Good Luck, > > Ray Walters > Remote Solar > On 5/26/2024 10:12 AM, Bradley Bassett via RE-wrenches wrote: > > Yes, lots of possibilities for leaks. I will be exploring them today. > Thanks for the tips for finding the location. This setup uses 300psi 1" > black poly pipe on a 25 ft drop, and then about 1200 ft run of the same > pipe up 220ft elevation to the tanks up the hill with the house about 36ft > below the tanks with only gravity feed (16 psi). All connections on the > poly pipe are made with long stainless barb fittings with T-bolt clamps, > pretty bomb proof stuff. There is a pitless adapter into the well casing, I > will check that for sure under pressure. I'll also fix the check valve in > the pump house. I seem to have a lot of issues with check valves, do they > really fail so often? We do* not* have high mineral water. I've > especially had issues with spring check valves and no longer use them. The > one in my pump house is a swing check valve which I thought was pretty > reliable. If I remember correctly, the check valve in these pumps is not > replaceable. Fortunately, we actually have two wells, each with a > 3SQF-2 pump that we can alternate for supply. I'll let you know what I > find. > > Way back in the '90's we had a customer with a solar pump that just would > not perform. Even with a new pump, new control, check this and that, it > just would not pump much water. It pumped fine when out of the well. The > drop pipe did not have any obstruction. They finally ran the pump while it > was out of the well with the drop pipe connected and under pressure, and > discovered a crack in the PVC pipe that did not show up except under > pressure. So leaks can indeed be hard to find. > > Brad > > > > On Sun, May 26, 2024 at 8:17 AM Jay via RE-wrenches < > re-wrenches@lists.re-wrenches.org> wrote: > >> Hi all >> >> Yes the pump won’t go backwards but it’s possible there could be some >> leakage through the helical coil. >> >> But both check valves have to fail which is a low probability. >> >> I’ve seen pipe broken due to someone closing a valve and not having a >> pressure relief valve. Not knowing what kind of pipe/fittings are being >> used it could be corrosion has made a hole. >> >> Not knowing the layout it might be possible to split the plumbing and see >> if the leakage is above or in the well. >> >> Lots of fun possibilities >> >> Jay >> >> >> On May 26, 2024, at 9:03 AM, Roy Butler via RE-wrenches < >> re-wrenches@lists.re-wrenches.org> wrote: >> >> Brad, >> >> Windy might chime in at some point to back me up on this but I see no way >> for that pump to turn backwards. >> Reverse flow is likely a leak at the pump, the down well piping or at the >> pitless adapter if there is one. >> >> Roy.... >> >> Another old time solar and wind guy, hoping to be retired someday :-). >> >> Roy Butler >> Four Winds Renewable Energy, LLC >> 8902 Route 46, Arkport, NY 14807 >> >> >> Education is when you read the fine print; experience is what you get when >> you don’t. >> >> “The less people know, the more stubbornly they know it.” >> >> Although no trees were killed in the sending of this message, >> a large number of electrons were terribly inconvenienced. >> >> >> >> On 5/26/2024 10:10 AM, Dave Angelini Offgrid Solar via RE-wrenches wrote: >> >> Hey Brad, >> >> Sometimes shooting is best if you tell more on what you have done so far >> like using the SQF shooting guide, especially on a holiday weekend😉 >> Assume there is a CU200 controller and pump is in ground still, must be >> with 100ft head, sorry >> No high amps? It runs, How old? >> >> --Dave >> >> >> >> *Dave Angelini Offgrid Solar >> "we go where powerlines don't" >> <http://members.sti.net/offgridsolar/>https://offgridsolar1.com/ >> <https://offgridsolar1.com/> <http://members.sti.net/offgridsolar/> >> e-mail offgridso...@sti.net <offgridso...@sti.net> >> text 209 813 0060* >> >> >> On 2024-05-26 4:26 am, Jay via RE-wrenches wrote: >> >> Hi Brad >> >> With 2 check valves leaking I’d look for a broken pipe or a corroded >> fitting. >> >> If there is anyway to isolate between the 2 check valves then you could >> measure the pressure drop on both sides which should point to the direction >> of the leak. >> >> Jay >> >> On May 25, 2024, at 7:41 PM, Bradley Bassett via RE-wrenches < >> re-wrenches@lists.re-wrenches.org> wrote: >> >> >> I have a water system with a Grundfos SQFlex SQF3-2 pump. I'm getting >> water flow in reverse either through the pump or a leak up to the pump. My >> question is if the check valve on the top of the pump is not sealing, will >> the progressive cavity pump allow water to flow through the pump in >> reverse? I'd think that with a positive displacement pump it would not, >> except very slowly or if it turned the motor backwards which I think would >> be very unlikely. There is about 100 psi head on the pump. >> >> I think it's most likely I have a leak somewhere in the plumbing, and of >> course another failed check valve farther up in the plumbing. It's possible >> to get failures even with redundant protection if you have two concurrent >> failures, which I must have here. >> >> Brad Bassett >> Old time solar guy who used to do solar pumping back in the '80's and >> '90's. 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