It doesn't always fail. I've done additional tests where the same size pipe ruptures before the cemented fittings, but at a lower pressure. What's important is the level of pressure these pipes can withstand. Thanks for watching!
Wonderful video. I like how you are meticulous with everything to ensure accurate results. Also, the bursting of the first pipe gave me a good scare. I wasn't ready! 😂😂😂
Water hammer means it needs to be 20 times the average line pressure. The weight of the water stopping suddenly can spike pressures to crazy numbers if only for a fraction of a second. That would be why I would say. I really like your video, would help alot of people choose the right material for their projects! Cheers!
Glad you enjoyed it Larry! Be sure to rate thumbs up, consider subscribing, and look over my extensive video playlists below for many other videos of interest to you. Taking one minute to share a link to my channel with others on social networking sites would be greatly appreciated. Thanks th-cam.com/users/electronicsnmoreplaylists
I've always wondered about that, if the pipe pressure rating was BS or not. ? is how can you get a good test that actually checks failure pressure of the material itself? I always used HD cement with my piping and you were just using regular strength glue. Part 2 - Get the strongest glue, re-clean and re-cement (or use new pipe components) and test again to see what the difference in glue makes and to see if you can get the plastic components to fail to verify ratings. It would be helpful if you could put 2nd camera zoomed in the pressure gauge in a PinP. Very hard to see pressure and maybe add snippets of moments of failure screen shots showing pressure and failure type. Thanks!
Right when you said you have to hold the end piece on with the glue because of the tapering i thought its set up for failure. Cant you put a rib on the pipe or some non tapered ends? Thanks for the vid.
I can tell you that 3/4" screw on PVC caps will crack and break over time under 125psi of air pressure. I think it's the hammering nature of the pressure from the compressor, even though one cap was over 250' downline.
@@electronicsNmore No I mean brand new, under cover, and it only takes a couple weeks. It has to be the beating of the pistons from the compressor. Plus UV has nearly zero effect on PVC.
Thanks for the very good video. Very informative. I like to use three-quarter inch PVC in my garage for my air compressor max of 175 psi. Will this work okay. Thank you
Interesting to see and learn. Can you do one more test using acetone? I used it many years ago to stack small pieces 1/4 thick acrylic sheets to make a prism and it turned out to be very clear after polishing and worked well.
@@electronicsNmore Lol i hate to be that guy but would love to see something about how much energy having a compressible medium (e.g. air) in the vessel adds to the failure.
Was the solvent of the glue you used tetraflouran and cyclohexanone or was it methyl ethyl ketone based, I have found the former works better than the latter. The manufacturer states 48 hr cure time for pressure pipe with the former
Great to hear, but if people don't start taking the time to post links to my videos on social networking sites, I'll be forced to cut the number uploaded way back. I cannot spend $125 on supplies/materials to make a video, then only have 3 or 4 thousand people watch it. Its a huge waste of my time and money. I need at least 50,000 views per video to be semi-compensated. Thanks for watching!
I was speaking in general, not to you. If a person doesn't have FB/Twitter/etc, no problem, they can support my work by watching the video all the way through with ads. Thank you
I think its rated for 480 bexause over time. At sudden shocks of pressure the system gets when you turn the water off and on, you will slowly get cracks over time and it will fail. Or maybe its something else. Like a 480 rating to last 50 years or sometging.
For some reason the pipe used in this video was able to tolerate higher pressure than my 2 recent videos. Watch my 2 newer videos, the fittings held up and I cemented them the exact same way. Thanks for watching!
This is excellent! I am building a heating system for me and my family within my garage and would like it to be safe! 480 is a high range and especialy for a cement joint! Now the real question for me is how much pressure can a 4" white pvc pipe withstand before breaking? I need to know because thats what my heating system will use and my safety blow off valve is rated at 150 psi! So with your work, this looks promising! Any help would be appreated!!!!!!!
primer weakens glue hold. There's several data segments people have done showing their bursting strength with pressure / tensile strength / and twisting strength. Now I don't believe you'd ever break the pipe vs the glue hold, maybe if you glued threaded PVC... but you'd have to get a pipe threader and thread it yourself maybe since idk any long pieces that actually have threads built into it. Either way it'd be interesting to do glue holding strength as well. As far as other data goes the "medium grey" with NO PRIMER is the strongest hold I have seen. Great test though, it would be very cool to see a glue stronger than the pipe itself.
Three times a failure at the joint should tell you to improve your joining process. The "primer" is actually a cleaner. Let it completely dry before introducing the cement. Take your time and make sure both surfaces of the joint are completely wetted with the cement. I suggest pushing the joint together, then giving it a one-third to one-half turn. And then, like you did, hold the joint for 30 seconds or so. Let it set overnight. I think you will get higher pressures before failure. The colored primer is so inspectors can see that you used a primer. At home I use the clear primer so I don't get that messy purple stuff all over the place.
The bond strength was surprisingly good. What's happening is the pipe under extreme pressure is bulging, and that bulging is enough to cause the fittings to pop off. I probably could've allowed the primer to dry 5 more secs. The method of assembly was fine. I let it set for 24 hrs! :-)
Well done! A suggestion for a future upload along the lines of this one. Demonstrate the result of leaving out a preparation step. *Cleaner *Reaming *Uneven cuts, improper *make up It would be interesting to see how much effect it has on the strength of the joint.
I know it would be a more precarious experiment - but how would it work with galvanized? Stay very safe if you conduct that test. I still have old sprinkler lines in my yard.
Unless the pipe is larger(over 2"), I'd need a higher pressure hydraulic pump. Thanks for watching! Don't forget to rate thumbs up and share the video link.
Air would be extremely dangerous because you can compress many cubic feet. The pipe would explode with plastic shrapnel at or near the same pressure level.
Extremely interesting results. I've seen a lot of people use PVC pipes in shops for compressed air and never considered it safe. I'm curious about long-term effects and just plain age of pipes.
The pressure used for compressed air isn't too high(125-150psi), so it shouldn't be a problem. As long as the PVC isn't exposed to UV light all the time, it shouldn't become brittle for a very long time. Thanks for watching Ted!
@@electronicsNmore completely correct but another factor is ozone degeneration of plastics.Although pvc got some stabilisation additives inside i'd go for "Gas pvc" pipes. They are thicker and rated like tank. I tried to burn one while it was pressurised with water and didn't even melt.
@@electronicsNmore The ratings on pvc are for liquid. Air pressure is different. Compressed air has a lot of energy and will turn PVC into shrapnel! Very dagerous!
@@jackofalltrades4904 PSI is PSI makes no difference if water or air. HOWEVER air will compress and that in effect stores energy if suddenly released------ BANG!
@@electronicsNmore Submerging the end of the pipe near the gauge under 1-iinch of water is "safe"?!! Better than nothing, but this was not a safe test setup -- especially because there was no distance (or apparently any barriers) between you and pipes that might have exploded. Murphy's Law is wrong -- a lot could have gone wrong here, but did not.
the pressure might only be 80psi but you are not taking into account the water hammer effect from turning on and off taps that can increase the pressure 20x easily
Most modern homes have air chambers on water supply lines to prevent "water hammer". Water hammer only occurs when the water is turned off quickly. 20x is excessive. There are online calculators for water hammer. My guess would be a few hundred psi.
Check out the link below. If you enter 5.5 Bar(82.5psi) for the inlet pressure, a high flow rate of 5.5m/s, pipe length of 20 meters, and speed at which a valve closes(1/4 sec, which is very fast), you'll see around 220psi. www.fipnet.com/calculation-tools-water-hammer-calculator/?lang=en
Hi Doug. Outstanding has always. Be4careful of the " Wanna be friends " Thing I have seen them popping up on a lot of channels, Same names two of them, more than others so far. Has always I liked,shared. All my best.
Quick question Bobby, Do you have "ALL" notifications turned on for my channel? If so, do you get all my upload and poll notifications? I've been having a big problem with viewers not being notified. Thanks
@@electronicsNmore Hi Doug. Yes I have all turned on. Poll ?. I have never gotten one for a poll ?. Oh and another thing I have noticed is even though I have watched your or anyone else's channel,is the fact like when I come back to answer a comment or leave a thumbs up for a reply. It shows I haven't watched the video. Strange to say the least. I will replay the video and it shows watched again?. Sometimes it will show like I have only watched a part of the video ?. Does this hurt channels like yours, I would think so,has it's like I quit watching . All my best.
Very interesting testing Doug! I kind of thought that the connections would fail first. I wonder what would happen if you use threaded ends coupled with glue? Keep up the great work.....👍👍😉😉
Hi mate, any idea what the bursting psi is for DWV PVC? (I understand DWV is not pressure rated, just curious what pressure it would burst at.. awesome vids!!)
I have that video planned. Sat is another PVC testing video I completed. Thanks for watching! Don't forget to rate thumbs up and share the video link with others.
Great video! Looks like that hydraulic pump might be leaking internally, the pressure looked as though it was not building properly, and I didn't notice any bubbles in the water indicating an external leak... Maybe you'll have to get your money back after all the testing!
@@electronicsNmore...oh yeah, forgot about the oil, and it was clear oil, so I didn't see it in the water... Will be interesting to see how the other glues hold up on Saturday, I think the hot blue will fair better, but not confident it will hold long enough to see the pipe burst! Might be interesting to see where schedule 10 ruptures though!?!
@@AnX8765 , I didn't see it because I'm watching videos on a phone, a larger screen and I would have seen it. In fact, when I re- watched it, I could just barely see it...
Strength was good, but not strong enough to allow the pipe to burst. The primer dries very quickly, but it's possible that waiting an extra 5 seconds could help make a stronger bond. Thanks for watching Henry! Be sure to share.
I guess this means I really don’t have to worry about the PVC water plumbing in my house bursting! (Technically they’re CPVC, but I don’t know what the difference is.)
You need to be carefull with plastics. Remember most have creep and even if they hold the pressure for now, under stress they get weaker over time until they burst open. Thats why they need to be overspec'd for the job Also the pipes need to withstand way more than the city line pressure because of the water hammer
Depending upon the application, engineers might have a 2X or 3X safety factor for certain things and maybe a 6X safety factor for other things. If the failure can result in the death of a person, you can expect a 6X safety factor (e.g. ropes used for overhead lifting, safety harnesses, shackles, etc). Obviously, they do not consider the water line in your house to life threatening issue deserving of that high of a safety factor. Since the failure is the glue joint, it would be interesting to see what you could do to improve the connection at that point. If the issue is the pressure causing the coupling to increase in diameter more than the pipe itself, maybe adding a steel sleeve over the coupling? Maybe there is a steel cap / coupling that was the right diameter that could be threaded onto the end of the PVC pipe (via threads cut in the PVC pipe) without any glued fittings?
@@electronicsNmore -- OK... Watched them today... Since they all failed at the pipe and not the connection, apparently you did something different when you were doing the test for this video and the connection was not as strong as in the other videos. Or maybe the manufacturer of the pipe / fittings is not consistent in his product...
@@CurmudgeonExtraordinaire I did everything the same. If you notice, the pipe was able to withstand more pressure than my other videos of the same size.
@@polishhotdog933 Actually most DWV PVC pipes are larger pipes (2" or greater). You can use 1" or less PVC pipes for potable "cold" water instead of CPVC and save a little money. Most people assume that the smaller size PVC is not good for potable use.
Hi Paul. 3K won't happen. Based on my additional tests, and information online, you'll never see higher than 1900 or 2000 for 1/2" SCH40. For 3/4" SCH40, the range is 1100 - 1550.
How many days did you let that glue dry? Perhaps you stated this in the video, I skipped ahead for obvious reasons. LOL, 24 hours from what I gather. Surprising the glue welds failed. Your home should never be above 80 PSI, 60 PSI is a good target.
Why is it that you’ll find correct logical gender terminology in plumbing equipment with male and female fittings but with people they don’t know which end goes in and which receives without getting the gender terms mixed up ? People is all stupid .......great video though !
Please do not use the pvc pipe cleaner it prevents the pvc glue or cement from producing a very strong bond and would cause your joints to fail i use to use the cleaner and my joints would fail under normal working presser so i stop using it and just use the glue which give me a stronger bond... so you need to run you test over but don't use the pvc cleaner
Wow! Very informative and helpful video that'll definitely help in the future. Looking forward to the next video!
Glad you enjoyed it!
@@electronicsNmoreuse heavy duty glue without primer , and retest
Great Information!
This is exactly what I was wanting to know.
Two Thumbs Up!
Yet another cool, useful video. Now I know not to worry about my PVC water lines bursting at a high(!) 100 psi. Thanks for this!!!!!
100 psi is nothing. :-) Thanks for watching! Don't forget to rate thumbs up and share the video link.
I really appreciated your analysis of why the cement was failing. It really makes perfect sense
It doesn't always fail. I've done additional tests where the same size pipe ruptures before the cemented fittings, but at a lower pressure. What's important is the level of pressure these pipes can withstand. Thanks for watching!
Thank you ,we learn a new things about pvc pipes.
Very cool and interesting video👍 got your sticker the other day. Nice to see things over perform 😁
Glad you enjoyed the video! Hopefully enough viewers take one minute to share the video link so it can take off. Thanks for all your support
Wonderful video. I like how you are meticulous with everything to ensure accurate results. Also, the bursting of the first pipe gave me a good scare. I wasn't ready! 😂😂😂
Glad you enjoyed it! Be sure to watch the other tests in my "PVC tips & testing" video playlist. Thank you
Nice video. Interesting results.
Thank you!
Hello I would like to know have you ever done that test with clamps also holding joins to see how much it can take thank you for video.
Water hammer means it needs to be 20 times the average line pressure. The weight of the water stopping suddenly can spike pressures to crazy numbers if only for a fraction of a second. That would be why I would say. I really like your video, would help alot of people choose the right material for their projects! Cheers!
Thank you, Not every day thing bu t good information great job on the video and test.
Glad you enjoyed it Larry! Be sure to rate thumbs up, consider subscribing, and look over my extensive video playlists below for many other videos of interest to you. Taking one minute to share a link to my channel with others on social networking sites would be greatly appreciated. Thanks
th-cam.com/users/electronicsnmoreplaylists
Good stuff 👍
Wil be good to make it but treaded caps at the end... and see how does.... great video
thanks for this video. I have been looking for this video for a long time on TH-cam.🙏🙏
You're welcome! Be sure to watch and share my PVC video playlist below. Thanks
th-cam.com/video/1o4E2pdEv-s/w-d-xo.html
@@electronicsNmore ok
Great content i was very surprised how tough it was
Thanks for watching John! Be sure to check out all my other videos and share.
Cool idea. Loved it. Shared.
Awesome! Thank you!
Can you do this pressure test again for pipes glued with primer and without primer
th-cam.com/video/1o4E2pdEv-s/w-d-xo.html
I've always wondered about that, if the pipe pressure rating was BS or not. ? is how can you get a good test that actually checks failure pressure of the material itself? I always used HD cement with my piping and you were just using regular strength glue. Part 2 - Get the strongest glue, re-clean and re-cement (or use new pipe components) and test again to see what the difference in glue makes and to see if you can get the plastic components to fail to verify ratings. It would be helpful if you could put 2nd camera zoomed in the pressure gauge in a PinP. Very hard to see pressure and maybe add snippets of moments of failure screen shots showing pressure and failure type. Thanks!
3 more PVC testing videos coming up. Next one SAT. Thanks for watching!
Right when you said you have to hold the end piece on with the glue because of the tapering i thought its set up for failure. Cant you put a rib on the pipe or some non tapered ends? Thanks for the vid.
I have another video that tests the strength of non-tapered thermoformed PVC, check it out under my PVC pipe video playlist. Thanks!
I used to do this for a living with hydraulic hose assemblies. For fun we would bring up soda bottles. Those brown A&W root beer ones were amazing.
Thanks for watching James! Please share.
I always sand the fittings before gluing so they don’t ever come off.
That video coming soon. :-)
I can tune a guitar. But I can't tuna fish. I sand mine too. I have some interest in that as well.
Great test I will never worry about running 100 psi again. Would also be interesting to test primer and glue vs glue only and different types of glue.
Coming soon. :-)
I would be interested in the primer vs no primer as well. I have a few pipes under my house "I forgot" to prime.
And “heavy duty” glue
learning from educated persons is invaluable
I've regularly run 2 inch PVC up to 600PIS without issues before. I never use the primer junk.
You're not too far from the burst rating of around 900 psi. Thanks for watching!
I can tell you that 3/4" screw on PVC caps will crack and break over time under 125psi of air pressure. I think it's the hammering nature of the pressure from the compressor, even though one cap was over 250' downline.
Yes. They're under pressure from the tapered male pipe they're screwed onto, and with age and UV, they become brittle. Thanks for watching!
@@electronicsNmore No I mean brand new, under cover, and it only takes a couple weeks. It has to be the beating of the pistons from the compressor. Plus UV has nearly zero effect on PVC.
Do you have a flex hose between the compressor and the PVC? i never had any problems like that
Nice work
Thanks!
Thanks for the very good video. Very informative. I like to use three-quarter inch PVC in my garage for my air compressor max of 175 psi. Will this work okay. Thank you
No problem at that pressure.
Use pex instead. PVC has brittle failure, and with air it can fling shards with a LOT of force.
@Robert Szasz I'll be testing that in the future. :-)
@@electronicsNmore pex? Or the PVC shard issue. Because the latter is rare, it happens just often enough that avoiding PVC makes sense.
@@RobertSzasz -- The PEX that I've seen at the home improvement stores should not be exposed to UV. That could be a concern in certain situations.
Interesting to see and learn. Can you do one more test using acetone? I used it many years ago to stack small pieces 1/4 thick acrylic sheets to make a prism and it turned out to be very clear after polishing and worked well.
I have (3) more PVC testing videos coming up. :-) Be sure to watch and share. Thanks for the video suggestion!
@@electronicsNmore Lol i hate to be that guy but would love to see something about how much energy having a compressible medium (e.g. air) in the vessel adds to the failure.
Was the solvent of the glue you used tetraflouran and cyclohexanone or was it methyl ethyl ketone based, I have found the former works better than the latter. The manufacturer states 48 hr cure time for pressure pipe with the former
try some of the high strength blue glue
Saturday's video. :-) Thanks for watching! Be sure to share the video link.
hi! i wonder if u could test the pvc pipe strength after being heated & bend to 90° 😅
I was always taught when joining pipes to "rough the surfaces with sandpaper before applying the glue wonder if that could have helped?
That testing video coming soon. :-)
Man I love your videos so much
Great to hear, but if people don't start taking the time to post links to my videos on social networking sites, I'll be forced to cut the number uploaded way back. I cannot spend $125 on supplies/materials to make a video, then only have 3 or 4 thousand people watch it. Its a huge waste of my time and money. I need at least 50,000 views per video to be semi-compensated. Thanks for watching!
@@electronicsNmore sadly I have no social sites or anything related and poor as dirt. But I subbed all my devices to your channel.
I was speaking in general, not to you. If a person doesn't have FB/Twitter/etc, no problem, they can support my work by watching the video all the way through with ads. Thank you
I think its rated for 480 bexause over time. At sudden shocks of pressure the system gets when you turn the water off and on, you will slowly get cracks over time and it will fail. Or maybe its something else. Like a 480 rating to last 50 years or sometging.
They definitely take into consideration water hammer. Thanks for watching! Be sure to share.
Why did the fittings on this vid test pop off, but on your other vid the fittings fully held but the pipe burst?
Hydraulic jack oil. If I used water, then I'd have to flush it out and fill it back up to prevent corrosion.
i never would have thought the joints were the weak parts!
For some reason the pipe used in this video was able to tolerate higher pressure than my 2 recent videos. Watch my 2 newer videos, the fittings held up and I cemented them the exact same way. Thanks for watching!
@@electronicsNmore i did, wonderful videos!
This is some awesome testing!! Would you recommend that hydraulic pump?
Glad you enjoyed it. I still have the hydraulic hand pump, it works well. I may have a link in the video description area. Thanks for watching!
Wouldn't sanding both pieces with a fine grit sandpaper significantly increase the bonding strength of the PVC cement?
Find out. :-)
th-cam.com/video/1o4E2pdEv-s/w-d-xo.html
@@electronicsNmore Gold!!
This is excellent! I am building a heating system for me and my family within my garage and would like it to be safe! 480 is a high range and especialy for a cement joint! Now the real question for me is how much pressure can a 4" white pvc pipe withstand before breaking? I need to know because thats what my heating system will use and my safety blow off valve is rated at 150 psi! So with your work, this looks promising! Any help would be appreated!!!!!!!
Never use PVC for heat applications.
primer weakens glue hold. There's several data segments people have done showing their bursting strength with pressure / tensile strength / and twisting strength.
Now I don't believe you'd ever break the pipe vs the glue hold, maybe if you glued threaded PVC... but you'd have to get a pipe threader and thread it yourself maybe since idk any long pieces that actually have threads built into it. Either way it'd be interesting to do glue holding strength as well. As far as other data goes the "medium grey" with NO PRIMER is the strongest hold I have seen. Great test though, it would be very cool to see a glue stronger than the pipe itself.
You missed another video. :-)
th-cam.com/video/1o4E2pdEv-s/w-d-xo.html
Three times a failure at the joint should tell you to improve your joining process. The "primer" is actually a cleaner. Let it completely dry before introducing the cement. Take your time and make sure both surfaces of the joint are completely wetted with the cement. I suggest pushing the joint together, then giving it a one-third to one-half turn. And then, like you did, hold the joint for 30 seconds or so. Let it set overnight. I think you will get higher pressures before failure. The colored primer is so inspectors can see that you used a primer. At home I use the clear primer so I don't get that messy purple stuff all over the place.
The bond strength was surprisingly good. What's happening is the pipe under extreme pressure is bulging, and that bulging is enough to cause the fittings to pop off. I probably could've allowed the primer to dry 5 more secs. The method of assembly was fine. I let it set for 24 hrs! :-)
Well done!
A suggestion for a future upload along the lines of this one.
Demonstrate the result of leaving out a preparation step.
*Cleaner
*Reaming
*Uneven cuts, improper *make up
It would be interesting to see how much effect it has on the strength of the joint.
Already planned. :-)
Sir which pipe [pvc,cpvc,upvc] is better for making homemade dumbells
None of them, they can break under stress.
great informative video. i been wondering of using 1/2" pvc pipe for 120psi airline. but still worry to do so. haha
Thanks for watching!
I know it would be a more precarious experiment - but how would it work with galvanized?
Stay very safe if you conduct that test.
I still have old sprinkler lines in my yard.
Unless the pipe is larger(over 2"), I'd need a higher pressure hydraulic pump. Thanks for watching! Don't forget to rate thumbs up and share the video link.
is it ok to use 1.5 inch for pressuring air up to 20 bar
Use copper pipe.
but would pvc suffice ?
For explanation im trying to rebuild the Tampoon gun from I did athing.
sir can i ask how it worka you're pump
Hydraulic
Do you think this pressure test would be different if you use just air no water inside the pipe?
Air would be extremely dangerous because you can compress many cubic feet. The pipe would explode with plastic shrapnel at or near the same pressure level.
Hey, quick question - if I use the PVC with compressed air (it's for a school project on a water rocket), if it's under 100psi, would it be safe?
I always scuff the female and male end. Wipe clean and then prime and glue together. I think it would hold much more psi with a scuff.
Extremely interesting results. I've seen a lot of people use PVC pipes in shops for compressed air and never considered it safe. I'm curious about long-term effects and just plain age of pipes.
The pressure used for compressed air isn't too high(125-150psi), so it shouldn't be a problem. As long as the PVC isn't exposed to UV light all the time, it shouldn't become brittle for a very long time. Thanks for watching Ted!
@@electronicsNmore completely correct but another factor is ozone degeneration of plastics.Although pvc got some stabilisation additives inside i'd go for "Gas pvc" pipes. They are thicker and rated like tank. I tried to burn one while it was pressurised with water and didn't even melt.
Be very careful burning pvc, stand upwind. PVC gives off dioxins when burned.
@@electronicsNmore The ratings on pvc are for liquid. Air pressure is different. Compressed air has a lot of energy and will turn PVC into shrapnel! Very dagerous!
@@jackofalltrades4904 PSI is PSI makes no difference if water or air. HOWEVER air will compress and that in effect stores energy if suddenly released------ BANG!
Is schedule 40 or 80 withstand higher pressures?
SCH80 can take higher pressure
Why submerge it?
Because pieces of plastic can fly off the pipe. It's safe.
@@electronicsNmore Submerging the end of the pipe near the gauge under 1-iinch of water is "safe"?!! Better than nothing, but this was not a safe test setup -- especially because there was no distance (or apparently any barriers) between you and pipes that might have exploded. Murphy's Law is wrong -- a lot could have gone wrong here, but did not.
Is that rope under the tub?
No. It's from a pine tree.
the pressure might only be 80psi but you are not taking into account the water hammer effect from turning on and off taps that can increase the pressure 20x easily
Most modern homes have air chambers on water supply lines to prevent "water hammer". Water hammer only occurs when the water is turned off quickly. 20x is excessive. There are online calculators for water hammer. My guess would be a few hundred psi.
Check out the link below. If you enter 5.5 Bar(82.5psi) for the inlet pressure, a high flow rate of 5.5m/s, pipe length of 20 meters, and speed at which a valve closes(1/4 sec, which is very fast), you'll see around 220psi.
www.fipnet.com/calculation-tools-water-hammer-calculator/?lang=en
Hi Doug. Outstanding has always. Be4careful of the " Wanna be friends " Thing I have seen them popping up on a lot of channels, Same names two of them, more than others so far. Has always I liked,shared. All my best.
LOL. I know. I don't do the "friends" thing. I was being polite. Thanks for watching, and thanks for all your support Bobby!
Quick question Bobby, Do you have "ALL" notifications turned on for my channel? If so, do you get all my upload and poll notifications? I've been having a big problem with viewers not being notified. Thanks
@@electronicsNmore Hi Doug. Yes I have all turned on. Poll ?. I have never gotten one for a poll ?. Oh and another thing I have noticed is even though I have watched your or anyone else's channel,is the fact like when I come back to answer a comment or leave a thumbs up for a reply. It shows I haven't watched the video. Strange to say the least. I will replay the video and it shows watched again?. Sometimes it will show like I have only watched a part of the video ?. Does this hurt channels like yours, I would think so,has it's like I quit watching . All my best.
Very interesting testing Doug! I kind of thought that the connections would fail first. I wonder what would happen if you use threaded ends coupled with glue? Keep up the great work.....👍👍😉😉
Tune in Sat, I'll be testing again. :-) Be sure to share. Thank you!
I have a question for you. If I were to send you some of my welds would you do a video on it seeing how much pressure my welds can handle?
Thanks for the offer Derrick, but I'm already backlogged with work.
Hi mate, any idea what the bursting psi is for DWV PVC? (I understand DWV is not pressure rated, just curious what pressure it would burst at.. awesome vids!!)
Much lower due to the larger diameter.
@@electronicsNmore thanks mate.. at a total guesstimate, do you reckon 100mm OVC DWV would be ok for under 50psi?
@@electronicsNmore *PVC
Great video, I never would have guessed that PVC would take such pressures.
Now I have to ask: what about PEX?
I have that video planned. Sat is another PVC testing video I completed. Thanks for watching! Don't forget to rate thumbs up and share the video link with others.
Great video! Looks like that hydraulic pump might be leaking internally, the pressure looked as though it was not building properly, and I didn't notice any bubbles in the water indicating an external leak... Maybe you'll have to get your money back after all the testing!
You won't see bubbles, there was only a trace of air in the pipe. :-) It was definitely leaking liquid. Thanks for watching!
@@electronicsNmore...oh yeah, forgot about the oil, and it was clear oil, so I didn't see it in the water... Will be interesting to see how the other glues hold up on Saturday, I think the hot blue will fair better, but not confident it will hold long enough to see the pipe burst! Might be interesting to see where schedule 10 ruptures though!?!
@@electronicsNmore why not use a grease gun with flipflops cut into it to make it that it can pump water?(grease guns can reach easily 4K psi)
@@AnX8765 , I didn't see it because I'm watching videos on a phone, a larger screen and I would have seen it. In fact, when I re- watched it, I could just barely see it...
So in otherwords, your fittings will fail before the pipe does when you put too much propellant into your potato cannon. Cool video :)
😂 The newer PVC videos I made yielded different results. Be sure to watch them. Thanks!
perhaps primer needs to dry first
Strength was good, but not strong enough to allow the pipe to burst. The primer dries very quickly, but it's possible that waiting an extra 5 seconds could help make a stronger bond. Thanks for watching Henry! Be sure to share.
I guess this means I really don’t have to worry about the PVC water plumbing in my house bursting! (Technically they’re CPVC, but I don’t know what the difference is.)
CPVC is chlorinated so it can tolerate higher temps. :-)
You need to be carefull with plastics. Remember most have creep and even if they hold the pressure for now, under stress they get weaker over time until they burst open. Thats why they need to be overspec'd for the job
Also the pipes need to withstand way more than the city line pressure because of the water hammer
Yes, water hammer is known to cause damage. I've installed many air chambers over the years on copper lines. Thanks for watching!
Thats it
Should of sanded the glossy finnish of the fittings and pipe first
I only followed the manufacturer's directions for the tests. The fittings did extremely well for 1500-1600 PSI. Thanks for watching!
They call this a "solvent weld" but I've never seen it truly melt together like steel does. If it does weld at all it must be like 1/64 of a inch
Only the pipe surfaces fuse, and it's a thin layer. Thanks for watching!
Depending upon the application, engineers might have a 2X or 3X safety factor for certain things and maybe a 6X safety factor for other things. If the failure can result in the death of a person, you can expect a 6X safety factor (e.g. ropes used for overhead lifting, safety harnesses, shackles, etc). Obviously, they do not consider the water line in your house to life threatening issue deserving of that high of a safety factor.
Since the failure is the glue joint, it would be interesting to see what you could do to improve the connection at that point. If the issue is the pressure causing the coupling to increase in diameter more than the pipe itself, maybe adding a steel sleeve over the coupling? Maybe there is a steel cap / coupling that was the right diameter that could be threaded onto the end of the PVC pipe (via threads cut in the PVC pipe) without any glued fittings?
Check out my PVC pipe video playlist. I perform more pressure tests. Thanks for watching!
@@electronicsNmore -- OK... Watched them today... Since they all failed at the pipe and not the connection, apparently you did something different when you were doing the test for this video and the connection was not as strong as in the other videos. Or maybe the manufacturer of the pipe / fittings is not consistent in his product...
@@CurmudgeonExtraordinaire I did everything the same. If you notice, the pipe was able to withstand more pressure than my other videos of the same size.
@@electronicsNmore -- I must be remembering it incorrectly then after seeing so many videos... :)
That is DWV pipe, that means drain/waste /vent. Not for water supply, for that you use CPVC pipe.
Incorrect. It's PRESSURE pipe.
electronicsNmore Does it say DWV on it? If not then I stand corrected. Nice video regardless.
@@polishhotdog933 Actually most DWV PVC pipes are larger pipes (2" or greater). You can use 1" or less PVC pipes for potable "cold" water instead of CPVC and save a little money. Most people assume that the smaller size PVC is not good for potable use.
Coba jangan di isi air 🤣🙏🖐️ bisa jadi boommmm
Nice let's compare to pex and copper
Thanks for the suggestion Dustin!
now try this again BUT thread the pipe as well as sealing with glue.
you should get over 3k#
Hi Paul. 3K won't happen. Based on my additional tests, and information online, you'll never see higher than 1900 or 2000 for 1/2" SCH40. For 3/4" SCH40, the range is 1100 - 1550.
Joints fail first. Aww I spoil it huh. What happens in practice is degradation over time inevitably causes failure.
Let that pipe sit in the sun for a couple weeks and give it a try.
The UV light will definitely make it less flexible and more brittle over time.
never know, this might save someones life.. (mine lol)
:-)
You should slightly over chlorinated water to simulate reality
It was, but it won't effect the result. Thanks for watching!
electronicsNmore - it made a difference when we tested polybutylene pipe and fittings.
Should have used the red hot glue, instead of this clear goo.
I tested it. Refer to my pvc video playlist.
What went through your mind when you googled PVC PSI? 😅
Hopefully my video was #1
How many days did you let that glue dry? Perhaps you stated this in the video, I skipped ahead for obvious reasons. LOL, 24 hours from what I gather. Surprising the glue welds failed. Your home should never be above 80 PSI, 60 PSI is a good target.
24 hrs. Follow up tests in other videos had the fittings hold and the pipes burst at a lower pressure.
Why not testing without primer? 99% of people glue pipes without primer?
I have a video for that. You can find it in my PVC video playlist.
Why is it that you’ll find correct logical gender terminology in plumbing equipment with male and female fittings but with people they don’t know which end goes in and which receives without getting the gender terms mixed up ? People is all stupid .......great video though !
😂 Glad you enjoyed it
You've got lovely tan.
😀 Thanks. I spend a lot of time outside, and love the outdoors.
Please do not use the pvc pipe cleaner it prevents the pvc glue or cement from producing a very strong bond and would cause your joints to fail i use to use the cleaner and my joints would fail under normal working presser so i stop using it and just use the glue which give me a stronger bond... so you need to run you test over but don't use the pvc cleaner
:-)
th-cam.com/video/1o4E2pdEv-s/w-d-xo.html
+62 lah
Put a clamp around fitting and then test it. Ŵe always put clamps on our fittings.