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v1rtu0s1ty
05-25-2007, 01:56 PM
Hi folks,

I don't know where to ask this question. I was hoping you can shed some light. This isn't really for whole lawn sprinkler system. I'm thinking of buying a submersible pump which is 1/3 HP and capable of 22 gallons per minute according to the specs. What I am planning to do is submerge this pump in a 55 gallon plastic container filled with water, and then connect a garden hose with a sprinkler at the end. Will it the sprinkler be strong? I'm thinking of putting a maximum of 2 sprinklers only.

The purpose of this is for the application of actively aerated compost tea(ACT) which I am brewing. You can see my videos of my AACT brewing at http://restricted.dyndns.org/aactbrewinglog.html

That's the liquid that I'm planning to spread to my lawn using the submersible pump.

So guys, please let me know if it's strong enough to drive 1 sprinkler head. I just want to easily apply it rather than walking back and forth with a 2gallon water garden can.

Any help would be greatly appreciated.

Thanks.

Ron

jimbo
05-25-2007, 03:01 PM
Typical submersible utility pumps are designed to move a lot of water, but not at sufficient pressure to operate a sprinkler head, which probably requites 20 PSI minimum, and would be better at 25 to 40 PSI.

Look at the specs for the pump you want to buy. Look for the specs on head, which is in feet. Each 10' of head represents 4.4 PSI. SO, you would be looking for a head of 50' minimum, and probably wont find that in a submersible pump. They make sprinkler pumps to do this , but they are not submersible. You could go with a well pump. None of these are real happy about a lot of crud in the water.

v1rtu0s1ty
05-25-2007, 09:43 PM
They make sprinkler pumps to do this , but they are not submersible.

I can go with any solution as long as it can suck the liquid from the 50 gallon container and out to the sprinkler.


You could go with a well pump. None of these are real happy about a lot of crud in the water.

I'm sorry but I did not understand what you mean by this.

Thanks.

Ron

jimbo
05-26-2007, 06:41 AM
I was envisioning a lot of floating debris in your mixture, which can foul a pump. Perhaps I was wrong about that. If you filter it to remove sediment, there should be no problem. You can usually find a sprinkler booster pump at any hardware or home store.

v1rtu0s1ty
05-26-2007, 10:29 AM
I was envisioning a lot of floating debris in your mixture, which can foul a pump. Perhaps I was wrong about that. If you filter it to remove sediment, there should be no problem. You can usually find a sprinkler booster pump at any hardware or home store.

Oh so you mean, the subpump I showed to you will work? But I need a booster pump. How do they look like? I'm assuming I should put it in between the sprinkler head and subpump.

And yes, there will be very few debris. Most of them will just be 1mm or 2mm max.

Thanks again!

Ron

v1rtu0s1ty
05-29-2007, 03:19 PM
What about this product, is this strong enough?

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93819

And also, what is going to happen to the submersible pump if there isn't enough water coming out from the sprinkler head?

Thanks!

Wet_Boots
05-29-2007, 05:14 PM
What about this product, is this strong enough?

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93819

And also, what is going to happen to the submersible pump if there isn't enough water coming out from the sprinkler head?

Thanks!You can't run sprinkler heads with a sump pump. Not enough pressure.

v1rtu0s1ty
05-29-2007, 05:19 PM
You can't run sprinkler heads with a sump pump. Not enough pressure.

There will be only 1 sprinkler head that I will be using. It's not really for watering the lawn. What do you think?

jimbo
05-29-2007, 05:57 PM
That pump is listed as max head 33 feet, which is around 14PSI. That is not enough to operate most sprinkler heads, not even one.

v1rtu0s1ty
05-29-2007, 07:45 PM
That pump is listed as max head 33 feet, which is around 14PSI. That is not enough to operate most sprinkler heads, not even one.

Can you please teach me how to calculate the PSI if max head is given? What do I need to add in order to drive at least 1 sprinkler head?

Thanks!

Rancher
05-30-2007, 09:27 AM
.433 psi per foot

Lots of charts out there, just Google for psi water.

Rancher

speedbump
05-30-2007, 10:41 AM
50 gallons per minute
Thermal overload protection
Pumps water to a height of 33 feet
Drains water from a depth of 16 ft.
UL listed
120V, 60 Hz, 1 HP, 750 watts; 6 working amps; 1-1/2"

They have a lot of damned nerve calling that pump a one horse pump. My 1/3hp effluent pump pulls 9 amps at 115 volts and only pumps 35 gpm at no head. What a bunch of false advertising.

Get a 1/2hp jet pump from somebody that sells real pumps and it will do what your trying to do. I have them for $257.04, my prices are very low for quality equipment and you can see it's a lot more money than Harbor Freight wanted for their hyped up sump pump.

bob...

v1rtu0s1ty
05-30-2007, 10:43 AM
Just got a reply from the vendor. This is what she said:


This may be to powerful for the size tank you are going to use.
SUBMERSIBLE DIRTY WATER PUMP-1 HP, 750WATTS,PVC RUST RESISTANT HOUSING,W/FLOAT ,12500FLOW,OR 3000 GALLONS PER HOUR,50 GPM,MAX DELIVERY HEIGHT:33FT, MAX 16FT SUBMERSION DEPTH MAX PARTICLE SIZE: .196" OR 5MM


Now, I am a little bit confuse. My faucet outside(from outside wall) can do 5 gallons in 40 seconds or roughly 6 to 7 GPM but I can operate 3 to 4 sprinkler heads. However, the product mentioned says it's capable of 50GPM but cannot operate a single sprinkler head. I'm sorry, I'm new to this realm. What is the relationship of GPM an PSI?

Thanks!

Ron

v1rtu0s1ty
05-30-2007, 10:45 AM
They have a lot of damned nerve calling that pump a one horse pump. My 1/3hp effluent pump pulls 9 amps at 115 volts and only pumps 35 gpm at no head. What a bunch of false advertising.

Get a 1/2hp jet pump from somebody that sells real pumps and it will do what your trying to do. I have them for $257.04, my prices are very low for quality equipment and you can see it's a lot more money than Harbor Freight wanted for their hyped up sump pump.

bob...

Thanks bob for letting me know. At least, I won't buy it anymore. :)

v1rtu0s1ty
05-30-2007, 10:46 AM
I have them for $257.04, my prices are very low for quality equipment and you can see it's a lot more money than Harbor Freight wanted for their hyped up sump pump.


Can you please send me the link?

Thanks!

Ron

speedbump
05-30-2007, 10:53 AM
That pump is totally wrong for what you want. Sprinklers require at least 30 psi in order to work. Submersible sump pumps are made to move a lot of water but not make much pressure. It's a trade off. More water less pressure per horsepower and visa versa.

The jet pumps can be seen here:Jet Pumps (http://www.pumpsandtanks.com/jet_pumps.htm)

bob...

v1rtu0s1ty
05-30-2007, 11:01 AM
That pump is totally wrong for what you want. Sprinklers require at least 30 psi in order to work. Submersible sump pumps are made to move a lot of water but not make much pressure. It's a trade off. More water less pressure per horsepower and visa versa.

The jet pumps can be seen here:Jet Pumps (http://www.pumpsandtanks.com/jet_pumps.htm)

bob...

Ok, if I use your jet pump, how will I pull the water from the big container? Do I just connect a hose from your jet pump then put it to the container?

Here is a text diagram

50g plastic container --->hose--->jetpump--->hose--->sprinklerhead

Is this correct?

speedbump
05-30-2007, 11:05 AM
Yes that will work, except for the hose between the pump and the tank. That should be either PVC or Poly pipe, preferably 1-1/4". I think your 55 gallon drum is a bit small though. The water isn't going to last long using two sprinklers that may be capable of 2.5 gpm.

bob...

v1rtu0s1ty
05-30-2007, 11:17 AM
Yes that will work, except for the hose between the pump and the tank. That should be either PVC or Poly pipe, preferably 1-1/4". I think your 55 gallon drum is a bit small though. The water isn't going to last long using two sprinklers that may be capable of 2.5 gpm.

bob...

55 gallons is too big for me already. :)

Is there a smaller version of that jet pump?

speedbump
05-30-2007, 11:34 AM
Nope. Sorry.

bob...

v1rtu0s1ty
05-30-2007, 02:33 PM
It's ok. What about overheating since the holes in the sprinklers are small, how does this jet pump deal with it? I have a feeling that it might explode the hose.

Thanks!

Ron

Wet_Boots
05-30-2007, 05:36 PM
Frankly, if this nutrient 'tea' is worth brewing, it's worth the effort to lug it around in a watering can. Applying it with a sprinkler head is probably not cost-effective. Other ways exist to move the 'tea' through a hose, but not a hose with a sprinkler head on the end.

v1rtu0s1ty
06-20-2007, 03:06 PM
Frankly, if this nutrient 'tea' is worth brewing, it's worth the effort to lug it around in a watering can. Applying it with a sprinkler head is probably not cost-effective. Other ways exist to move the 'tea' through a hose, but not a hose with a sprinkler head on the end.

Wet_Boots,

What you said is similar to what the person told me a few minutes ago. He told me to mix my 13 gallon tea on a 50 gallon dechlorinated water on a 50 gallon barrel or even use rain. Then at the bottom of the barrel, there is a faucet(similar to picture below). Then he told me to connect the faucet to a pool pump. The barrel though should be higher than the pump. Gravity will let the water out. Then connect another hose to the outlet of the pump. Then he told me not to put any sprinkler head on the hose end. He just walks on while he is watering the lawn.

What is wrong with the sprinkler head? Do you guys know of a decent/not so expensive pool pump that will do what I just mentioned?

http://www.longwood.edu/cleanva/images/rainbarrelsdone.jpg
Thanks guys!

Bob NH
06-20-2007, 08:05 PM
A sprinkler needs at least 20 psi minimum to do what it is supposed to do. It will sprinkle with less pressure but it will be more like a dribble.

The very smallest jet pump will do what you need. For as little as you have, go to HD and get the smallest jet pump you can get, in plastic. If your "tea" includes fertilizer it will destroy any metal that you might get.

Life doesn't matter because you are going to use so little water. I would flush the pump with clear water after distributing the "tea".

v1rtu0s1ty
06-20-2007, 08:54 PM
A sprinkler needs at least 20 psi minimum to do what it is supposed to do. It will sprinkle with less pressure but it will be more like a dribble.

The very smallest jet pump will do what you need. For as little as you have, go to HD and get the smallest jet pump you can get, in plastic. If your "tea" includes fertilizer it will destroy any metal that you might get.

Life doesn't matter because you are going to use so little water. I would flush the pump with clear water after distributing the "tea".

Yep, I won't be using any more sprinkler heads. I will just use my garden hose connected to the pump and just walk around. This way I can even concentrate on an area I need. :)

And thanks for the HD suggestion, I didn't know they sell jet pump. I will go there tomorrow since it's past 10pm here. Will this pump work, http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=1479

Thanks again.