Ram Pump Absolute Minimum Head Pressure
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- เผยแพร่เมื่อ 16 มิ.ย. 2021
- What is the minimum input head pressure that the ram pump can work on? I test out the 1/2" ram pump to see if it will work on as little as 20 inches of drop. I highly recommend that you use at least 3 feet of head pressure to get the best results from your ram pump.
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It is important to remember that even though your ram pump may not be required to pump UPHILL it can transport water from a creek or other watersource quite a DISTANCE...... sure beats carrying buckets of water to the house even if it's not very much uphill......and also a ram can pump to a barrel in some situations and then a syphon action is used to cover additional distance such as over a hill and down to a cabin..... some old people used this combination to cover a quarter mile or more...... they thought "outside the box" ..... LOL
I have always appreciated simple machines that are efficient and that accomplish a valuable task and Ram Pumps do it all. Thanks for pushing the limits.
Very interesting but.... I'm wondering about the volume of water and force behind the pump large creek ,several gallon flow with very little drop
EUREKA, this tip to turn the check valve finally got mine cycling with little head. Now I can work on improving the weir to raise the water level and eventually get the check valve back vertical. Thank you!
Interesting. Thanks for sharing.
Great explanation of tilting the check valve. Thanks. Good video
I love the test. I have a situation with very low head pressure so this was great to see work.
Very interesting, this is something I was curious about. It's given me an idea for a new type of gravity pump.
Great video👍
What is the amount of water that a 100 mm rum pump uses in one go, knowing that only 10% of the amount of water used rises? Or how do we determine the volume of water needed to be consumed at a stroke ?, depending on the size of the main piston ?, or the size of the pump body ?. Both times together? ?. And after that we will look for efficient water sources. Thank you. You are the only one on TH-cam, with simple, intelligible, relevant, necessary explanations. Thanks again.
Here's a time-intensive experiment: measure flow rates of delivery rate vs. waste vs. head pressure vs. delivery height and make a graph detailing what to expect under certain conditions. I'm sure someone has done this already, and I plan to tinker a bit myself and record results, but it would still be an interesting experiment. (I'll share data when I get to this)
It is a good idea. I plan on using this same hill to test that idea. Might have to run another 100 to 200 feet of hose to get the numbers.
@@LandtoHouse ... and remember the math&formula I sent you.
This is a good one, thanks for posting
I think it will help a lot of people.
@@LandtoHouse yes it will, when are you doing the extension on the shed, I'm waiting for that
@@LandtoHouse th-cam.com/video/4y_WWxWdn5A/w-d-xo.html
Great experiment, and very useful! Measuring the head pressure with your outflow test is also very meaningful. You probably could reduce your waiting time by using a shorter Delivery Hose ;-) or by measuring just the pressure at the outlet of your pump. That is probably not very accurate (1 psi is equivalent to 2.3 feet of Delivery Height / and your pressure gauge has only one scale division for 4 psi, if I remember right), but much faster. Perhaps there are more sensitive pressure gauges? You also can test your pressure gauge (and how accurate it is) by connecting it to a hose full of water and lift the other open end of the hose to certain heights.
So useful video for farmer I like it.
Thank you. This is a question I get a lot.
Low head pressure, thats interesting for me!
Thanks for continuing to test and record Seth! This is possibly the most helpful troubleshooting video yet for my situation. When I got started with your ram pump I didn’t understand the math and science of this - and did not know about fiddling with the check valve when drop/lift was lacking. I managed to figure it out after many frustrating hours, and I’ve ordered a brass check valve to see if that helps in the future. Now I’m searching for a good no pressure drip tape system. Anyone have suggestions??
Exactly ..... and btw, just restrict your outflow valve and your exhaust valve will close....... otherwise you have to wait for your uphill water hose to fill
Excellent job, definitely worth the effort to test the limits of the pump. Have you tested the maximum head pressure for the point where the waste valve won't be able to cycle?
Coiling the hose up on the hillside like that will create air-locks nerfing your delivery height.
I haven't come across one yet but have you made a video about the differences in one to multiple storage tanks. I was thinking of adding a stand pipe with a gauge on the top end to see if I could read intake pressure without water hammer interference on that gauge. However I realized this would also act as a secondary air pressure vessel and wonder what effects this could have on the pumps performance.
Interesting! I’ve got a stream next to me but the drop from a town owned weir just over the property line to the edge of my property where the stream leaves is very low. I’ve not actually measured it but I’m guessing it to be well under 2 feet. It flows well but there’s not a lot of head. With that being said I want to use a ram pump to fill an ibc tote or two on a couple skids so maybe 6-7’ of lift total, to allow me to water my garden more regularly. This low head video speaks to me. What kind of things can be done to increase efficiency? You mentioned turning the waste gate so it would run at a lower pressure but sacrificing efficiency in watching some other videos you talk about a larger drive pipe lowering pressure this seems counter intuitive as I’d think larger volume of water into the pump would increase the amount of force in the pump if the pump is significantly smaller than the drive pipe? Any suggestions?
Thanks for your help.
I have a stream in my back yard with a high flow rate but it is flat. How to I create pressure?
Can you devise a ram pump pressure multiplier? A few low pressure ram pumps in parallel input to another ram pump, in order to multiply your output pressure?
would a vertical pump work better with the lower head ?
What if you had wider pipe right from the bucket and goes thinner down to the valves? Would it help to have more pressure or not? I think it would help to have more pressure, but not sure untill I see it in action, cant do testing myself because I aint got them tools with me nor a stream nearby to test.
So you could have a staged or stepped system to get water up to 6' essential having an intermediate water storage and two pumps? I guess the intermediate storage tank you need to be quite big and not fill very fast, but you would be at least be able to lift the water higher?
Could you add a stand pipe to this to increase pressure from a very low head? I have a length of river on my property that is fairly flat with a very high flow rate. Wondering if i could make a ram pump that woukd function in these conditions. Need to pump water about 6 or 8 feet up the bank to bottom fill a large tote for irrigation/livestock
Can you use a siphon to get this to work curious if you’ve tried
Good experiments ...... yup
What is the shortest lenght of input Pipe? Will it work in well?
don't forget you are trying to overcome pressure from the SPRING loaded check valve... perhaps if you changed to a swing outlet check valve and changed the angle somehow
What happens if you increase the diameter of the pipe to three inches then convert to 1/2 inch on the end. With more mass of water behind it falling, would it help the twenty inch ram pump function?
I'm wondering the same thing there must be a answer somewhere
So your other experiment shows the pump will run submerged with little to no difference. Does that mean you could theoretically drop a ram pump into a well with 4' of water into a 3 foot pipe attached to the pump an it would pump it ~ 20' high? Or would it need atmospheric pressure? Would a bell siphon work into a ram pump? Only delivering what the pump uses? Or would the siphon give up?
what if you have a 2inch pipe and reduce it going to the pump at the pump would the pump work more efficiently in this situation. 🤔
hey! i have a mountain spring that 1 gal per min on a good day.. what would you recommend and what is the min gal/min that will run a 1/2 inch pump?
Maybe if the input slap valve had an n shape exhaust pipe to achieve the syphon effect,
then the valve would be more efficient and slap closed at lower pressure?
👍👍응원합니다 👍👍🇰🇷
How do u make ur pressure tank
Can you do a syphon barrel, running into a ram pump out of a pond? Just wonder if anyone has done that?
I have at least 10 GPM (I can fill a 5-gal bucket in a about 20 seconds) but not much head...maybe a couple of feet at the most, I haven't had a chance to measure it yet as I'm just starting to build my system. I will probably be hooking up the intake in the bottom of a culvert as it comes out from under the driveway as that will give me the most head possible since there is a 1-ft drop immediately after that and someone else's property on the other side. I don't need a lot of water supply as it's just the dogs and I and I'm filling a 275-gal tote to pull from with a 12V pressure pump to a well tank. Would you say use the smallest one available as that works best/most reliably with low head?
Does it matter if I use rigid or soft hose/pipe at any point in the run? Does softer hose cost any pressure/efficiency with it's flexing or does it matter? I'll be running the intake down the creek a little ways to gain more head and put it closer to my water cube so a hose would be easier for following the twists and turns.
I was about to order my ram pump tonight but ran across this video and figured I'd ask first before pulling the trigger.
How do u make a air tank
Can u use 2 ram pumps? Run the one into the other?
I am toying with running them in series and parallel too. And combining them with siphon systems, but i need to go to the hardware store lol.
In Skimming your ebook, I didn't see you getting into drive vs supply curves and tdh.
At some point, do you recommend just winging it?
My goal is to run a few tests on that to make a small chart. I'll have to do a chart on each size pump because they will consume different amounts of waterMy goal is to run a few tests on that to make a small chart. I'll have to do a chart on each size pump because they will consume different amounts of water.
I will probably use the same hill for my testing ground.
@@LandtoHouse cool!
My alternative is this low flow, high head xfer pump. It's gotta graph with discharge height on the Y axis and GPH on the X
At 110', saying 3 GPM
m.ferguson.com/product/proflo-12-hp-cast-iron-transfer-pump-pf90060/_/R-8889397
Good day sir, can watch a u-tuber " Learn to Life". After watching it can ram pump setup be incorporated to his syphoning method. I hope u can help me know so tjat i cam help my brothee in law in crop irrigation
Seth Habibi just a reminder about the 4 waste valves 😁
Haha yes I have not forgotten.
@@LandtoHouse I will keep on reminding you in every video..I just hope you don't get too annoyed and you block me😅
Low head is not a problem if drive pipe is a large enough diameter and flow rate increased due to less fluid friction
The problem then becomes the reduction in efficiency as the pressure wave battles the larger volume of water up hill.
@@LandtoHouse ľ altezza la devi misurare dal livello dell'acqua nel secchio, più è alta la colonna d'acqua maggiore sarà la pressione alla base e quindi anche nella tubatura. La larghezza del serbatoio è irrilevante, per avere una maggiore pressione è necessaria solamente una maggiore altezza della colonna d'acqua .
Con un serbatoio più alto puoi superare anche piccoli dislivelli senza l'aiuto di una pompa. Potresti fare altri video sperimentando quanto detto qui sopra
Seth, I've been testing my homebuilt pump out similar to the way you had done and closing off the discharge side to let the pressure build up, but I only get 14 psi and the impetus valve doesn't cycle. I'm using an inverted 1" brass foot valve (without the spring) for the impetus valve and I think the plunger portion is just too heavy for the low water flow. For the check valve, I am using a brass flapper version like you used here for the impetus valve. I'm wondering if using the brass flapper as a check valve might require pressuring the accumulator tube, somehow. Three H/W stores in my area and they all carry the brass check valves; no PVC.
Just to test the unit, I was using a straight run 5/8" garden hose with a drop of about 9 feet. Once installed, I was going to use a 100 ft long 1" poly hose. which might get me 5 ft of supply height at the river, but for now, I just wanted to test this thing out. I didn't use the PVC main check valve because they all seem to be sealed units, the springs for which are intended for higher household pressures. Any thoughts on that? Maybe it doesn't make a difference.
This video was great. The information about the minimum height was priceless.
Thanks.
Sir, please use valve with less weight
Where’s more hydro videos?
🙄