5/8 vs 3/4 Inch Garden Hose: What's The Difference?
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- Опубліковано 27 сер 2024
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Hey thanks for making this video. I was hoping you'd compare the pressure of the same length hose for the 3/4 and 5/8th. Shouldn't there be more pressure for the 5/8th since there is less internal volume for the 5/8th? And how does the greater internal pressure of the 5/8th hose counteract the lesser volume?
The gist of it is 50ft hose or less, use 5/8 diameter. Anything longer, use 3/4. Got it.
Dude, thank you. You just saved me 12.5 minutes…
Cheers dude for your service
Long videos suck these days
Thank you so much for making this video. I have been through about 6 water hoses within 10 years and wanted something that would last.
Right. I do WFP window cleaning. Industry standard uses 5/16, I use 3/8 because I use spray bars and 3/8 gives better pressure and flow to fill bar. Same with my pumps. If I use pole hose or 1/2 hose my pump works hard and draws over 10 amps. Use a larger hose to supply water then use pole hose my pump is hardly working. Always use the larger hose if possible. Friction loss sucks.
On my yard 1 acre I ran a 1 inch pipe as a top rail on fence and 3/4 inch drops to hose and run 3/4 inch hose works great . Note we are in California with no real freeze worries . Good video
Outstanding advice. You confirmed my purchase five years ago when I spent a lot of money buying 3/4" hoses instead of what the "locals" were advising.
My Montana "lawn" is two acres around the house and stretches around forested trees in a park-like setting.
Our main house water spicket has two (2) splitters to accommodate four (4) outputs where each outlet travels 200-300 feet to a "water zone".
At each water zone I have a splitter where two of the 100 foot zone hoses take the water further. AT the end of each hose is an Orbit (Rainbird) Impact Tripod sprinklers.
To ensure that each water zone will work, I have installed at the source house output four (4) Orbit Timers so that there are no more than two spinklers running at one time until their timer ends and another timer begins. This also permits me to water at odd hours so as to not draw down neighbor pumps using the same water table and aquifer.
Again, you're a champ for validating what I believed. This year the cost of a 100 foot 3/4" hose has doubled in cost but at least I own them. (I have 16).
You explained water hose size diameter,length,flow rate and water pressure real good.
I could listen to you for days! Thanks for the video. I've learnt something new today. 🤣
it would be interesting to see the pressure difference between a 3/4 and a 3/8 tube. good video.
Turned it on full blast to measure the pressure. That would matter if you were measuring flow and pressure at the same time. Outside of that, just cracked open will get you the same reading. IDK, I just found the full blast thing funny.
If you wanna take a really deep dive on the topic, google firefighting hydraulics. Water flow and hose friction loss are life/death topics for firefighters.
Man, you got a kick-ass water supply!!
Friction Loss and Flow is the Difference!
I would murder for that kinda water pressure 😂
buy a pump
wonder if he has a well.Most homes with that pressure have a well.
When you were reading pressure, you were static, with no moving water. So why the drop in pressure since water is non-compensable.
Wow what an awesome video thank you very much for the time and effort really answered a lot of questions I had 👍👍
hmmmm maybe I am missing something here. The hose pressure should be the same if the hose fluid is static. Isn't that what you did?...deadhead the hose with the gauge? With no flow, the pressures in all parts of the hose will be equal to the extent that all parts of the hose are on the same level.
That's what I thought too.
He has the right idea...somewhat... There is a difference between pressure and velocity. Line loss will happen as the hose gets longer. Attach a short length 3/4 hose to the source and then to a length of 6" pipe. You still have 56# PSI at the source but the velocity will not be there. Put a cap on the 6" pipe and you'll have 56# Like putting your thumb over the end of the hose. Your increasing the velocity coming out but not the pressure. 56# is 56# all day your not changing that. I'm terrible at explaining things.
Matt I agree. When capped off and no flow the pump should build up to what the pump switch is set to over the whole system. If it’s opened to sprinklers or anything else, what he says makes perfect sense to me but not when it’s capped off.
Civil engineer here specializing in water systems and hydraulics. In static conditions (water turned on but not flowing), the pressure at the end of the hose will equal the pressure coming out of the spigot (not spicket) of the yard hydrant/hose bibb (assuming the elevation of hydrant and discharge-end of hose is the same). This is regardless of the length and diameter of the hose. This is regardless also of elevation changes in the middle of the hose. There is no friction unless water is moving/flowing. My guess is the reason the author saw a pressure drop in the video had to do with air trapped in the hose that was compromising his result. If he used a bleeder valve in his experiment to get all the air out before taking a pressure reading, he would have seen the same "static" pressure at the end of the various hose diameters and lengths. But, the overall point here is good - a larger diameter hose will deliver more water in terms of flow rate (gallons per minute).
@@joshbecker1760 I agree with you. Assuming it's truly static - even including the expansion of the hose.
Thanks for taking time to explain in such detail. It answers all my questions. Thank you!
Really helpful video. I've been loving the simplicity of your channel. Thanks so much!
WOW. An awesome video man ❤
Shouldn’t the static water pressure be the same irrespective of the size or length of hose? There is no friction loss when the water is not moving.
Yes you are 100% correct. I suspect pressure at the hose bib has dropped if it is controlled as on/off pressure from a well pump say., i.e the pressure at the yard hydrant has dropped. Now there will be a loss in total pressure and velocity pressure on both hoses when flowing. The loss on the 5/8ths hose will be greater. The static pressure (measured at 90 degrees to the flow stream) at the open end will be the same.. i.e equal to atmoshperic pressure or zero psig.
run tow sections of hose 1st length 3/4 then 5/8 hose. That should make some kind of difference
After use converted air line tubing on my outdoor faucets kept blowing regular garden after a pressure test found out that there is no pressure regulator and was getting 180 PSI at the faucets.
Awesome detailed analysis! I Always wonder exactly what the diff/ benefits were. Matt Morman at obsessed garage did a test on pressure washers and pressure washer hoses with quite surprising results, very informational thanks!
Super helpful video packed full of info. Love the tests you ran.
Thank you!
Re: rain barrel with overflow hose using gravity
In a recent torrential storm my 5/8” 25 ft. hose couldn’t transfer enough water and water spilled out of the top of the barrel. I assume using a 3/4” or 1” 25ft hose will mitigate the problem with this gravity system?
My water supply line is 1/2 inch. Am I wasting money buying a 3/4 hose? Is the limiting factor the sully line? I think my flow rate is about 3.5 gal per minute through the spigot.
If you put a spray nozzle on the end, won't that change all of this and finally determine the actual flow rate/pressure? Regardless of the hose diameter, the final step down 1/10" or whatever is the actual tiny hole the water has to try to get out of. In the same way that water from the main line in the street is very strong (fire hydrant) but in your house, it is relegated to that 1/2". Also, like a speaker or a light bulb. They may be rated to X number of amps but only use what the device is capable of. A chain is only as strong as it's weakest link. With an open end, yes, 3/4" might flow more volume but not sure when you put a nozzle on it.
I just ask AI 100' 3/4 then 100' 5/8 flow will be ruff 5.6 gpm. The pump is 7gpm. 200' 5/8 the GPM ruff is 3.5 to 4.9 gpm. So, it absolutely makes a big difference.
An external fire hose is what people need so if your house is on fire you can put it out, if ya don't believe me just look here on You Tube. Also for hot water supply to sink kitchen and bathroom I would like to see a video on how much faster the hot water would get there with a smaller supply line.
👏🏽👏🏽👏🏽 Great video Brother!
You covered this topic like a KING. Thankyou So Much.
If I have 2 orbit impact sprinklers that work great with 2 but not with 3 do you think that swapping out my 5/8 hose for a 3/4 hose would allow for all 3 sprinklers to work?
Love your view of the backyard
Just what I needed to solve my problem. Thanks!
Excellent demonstration
Just like wire with voltage drop. Even though it's 300+ foot but yeah damn near the same
Really usefull video, thanks. Can i ask what pump are you using?
I may be wrong but it’s not up to friction that slows the water down of a longer pipe. Over the length of the long pipe, there will be less pressure due to you having to fill the pipe with more water. It acts like a big tank. The result pressure will be reliant on how many sprinkler outlets you have on the hose. So a smaller diameter hose that is lengthy may never build up enough pressure required to come out of the sprinklers . Basically, the hose is acting as a tank. In its most simple form, a longer run you need a large diameter hose because the sprinklers will require a minimum amount of pressure to activate to their potential. If you have a lot of sprinklers on a small pipe, your low pressure water supply is not enough to meet the total sprinkler output. One cheap way around is to use a large diameter pipe to feed most of the water to its destination, then just before you branch off to the sprinkler you use a smaller diameter pipe. This is similar to forcing a large tank of water (large diameter pipe) through a small pipe that will have to theoretically meet the large diameter pipes water flow. The result is higher pressure at the final sprinkler outlet. Of course there are other factors such as if you end up having too many sprinklers, you’ll never build up enough pressure to keep up with that initial low pressure water supply.
It's the friction that causes the pressure drop along the length. If you had a theoretical frictionless hose, the pressure would be the same at both ends (assuming no change in elevation). A Moody Chart shows the relationship between friction factor, relative roughness, and Reynold's number.
Wow this was great info! Thanks!
Well done, thank you 😊
Static pressure should be the same no matter the length of the hose. Can you explain the loss of pressure when everything is in equilibrium and there is no flow?
The experiment was flawed. The pressure would have reached the same level (assuming no leaks) given enough time. There's simply more space to pressurise in the tube and so it takes longer. That said, in most use cases it is the flow that will matter which certainly is impacted by the hose I.D.
Thanks for the video. Take Care.
Wonder what the flow would be. Like how long it takes to fill a bucket with each length. Please test and share.
Great explanation! I’m convinced :)
Well done!
Thanks Robert!
Thank you so much, Sir!
Does the flow rate get affected if I connect quick disconnects?
Yes, the flow is restricted with the vast majority of quick connects/disconnects. The only one I know of that don't restrict flow are the Eley quick connects. They are spendy but seriously high quality accessories that I use on my own hoses. I am not sponsored by them and I buy their stuff with my own money too. Couldn't recommend them more. I don't have a video about them but I do have a blog post on this topic: turfmechanic.com/best-garden-hose-quick-connect-sets-reviews/
@@TurfMechanic great, thank you so much!
I appreciate your video. Lots of good details there. One question that still remains for me though.... the 5/8" and 3/4" hose were able to attach to the 3/4" spigot without an adapter? So the size of the threads is the same for both sizes of hose?
The standard connection for garden hoses is 3/4” GHT (garden hose thread). It’s always wise to look at the inside of the connector, because some much smaller than ideal on the inside. You could end up buying a 3/4” hose that has just as much restriction at the opening as a 5/8” hose.
@@a111z
Thanks a lot!
Be curious to dee this on my laen with one big sprinkler 125 ft away on a low yiled well..
Who knew water hoses would be so interesting
lol, just wait for the drip irrigation videos in the spring, riveting! :P
@@TurfMechanic I'll keep an eye out for it
Poiseuille's law. In medicine this is important for rapid transfusion/infusion. To maximize flow you need the widest diameter but also the shortest length of tubing. If you control for the length of the tubing as he did in the video then the radius of the tubing is the only variable and it is very clear that 5/8 inch hose will deliver far less flow. It might not matter much if the hose is short. But for anything beyond about 50 ft. or if it is being used on an irrigation system with several sprinklers, 3/4 inch is really the only way to go.
How does this apply if it’s already coming from 1/2 spigot
Fantastic information! Thanks.
Add a booster pump at the source.
Excellent video
Thanks
I would love to try out a medium quality 5/8 inch hose and a 50 foot would be adequate for what I need here. Thank you very much. If you’re only giving away 75 foot hoses that would work as well
100% it works
Just explained electricity and wiring
Awesome content !
Thank you!
Would you lose pressure with a larger diameter?
i know this is an old video, but do you remember if you bled all of the air out of the hose when you tested the pressure at the end of the hose. You added a 100ft hose. Did you run water before you checked pressure?
Are you reading the gauge right?
Yeah, the camera angle may not have been as direct as it could have been though.
Is your red 3/4" hose a true 3/4" i.d. at BOTH ends. (I'm only asking because I just bought that hose and the fitting on the input end is choked down to 5/8".) I'm trying to find a full 3/4" ALL the way through. Thanks, and great video. I never calculated the length and friction.
yes it is but to be honest a year later I think the metal fittings that cinch down on the ends probably squeeze the hose slightly. There are probably truer 3/4" hoses out there but it's definitely bigger at all parts than my 5/8" hoses.
@@TurfMechanic absolutely right. It's still better than the 5/8". Thanks for the info.
Good info thank you 🎉🎉🎉🎉🎉
Interesting.
1/8”!
Anyone know where on earth I can get 5/8 inch (preferably pvc) caps for a garden hose? Male and female. I want to completely close off both ends because I want to fill it with water or sand to add some weight to it and use it as a battle rope for workouts. I can't seem to find this size cap anywhere.
Try using FOAM STUFF to seal the ends just cut off the excess to make it neat on the ends
Use a plug cut the connectors off and use a barbed plug and hose clamp
Damn I just learned a lot. Thank you!
RAIN GUN SPRINKLER
Also, I think its neat how static pressure is affected by resistance length. Doesn't make "common" sense to me, - but it was shown on screen so... ¯\_(ツ)_/¯
What about if you connect it to your house tap which is powered by half inch hose.
Quantity of water drops enormously when you source with a 1/2" hose. The velocity would have to be off the charts to make up for the small diameter to keep up with the 5/8 and 3/4" hoses.
@@TurfMechanic watering lawn with a 1/2 hose.. they said 3/4 wasnt necessarry. My 375 m2 sprinkler cant even cover a 200 m2 area. I have to move it twice... is my water pressure the problem or the 1/2 hose?
My friend. There is no such thing as overkill.
an 1/8 inch, duh
Uuuuh, 1/8"....? Is this a trick question???
Does he live in canda or something? Ive never seen or heard of 5/8 garden hose lol
In the US, 5/8” hoses are much more common that 3/4” hoses.
lots off pressure
Now do it in metric so I can understand.
🤯
Waste of water trying to keep grass in desert areas
I agree. I nixed the idea of greatly expanding my irrigation area not long after making this video. I now am focusing on 5% of my property switching to low water input grass (buffalograss) only inside my fence area. I do still support growing limited greenery like grass, gardens, trees, and lawn plants even in hot dry climates for a variety of reasons though. Care however needs to be taken to avoid water waste.
Very boring. Put me to sleep.
Lol, I don't blame you. This is a video on my "I need to remake this sometime" list. The info is much better than the presentation.
Which hose. Should I use because since I have low pressure coming out of my outside faucet for my garden hose(trying to have bette r pressure coming out of it )
Go with the smaller 5/8 or 1/2 hose