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Sprinkler system low water pressure



 
 
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  #1  
Old July 14th 07, 01:58 AM posted to alt.home.repair
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Posts: 35
Default Sprinkler system low water pressure

My automatic outdoor water sprinkler system suddenly has low to no
water pressure. It just came on. Some times it works fine, others it
has low pressure. Any ideas on what could cause that?

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  #2  
Old July 14th 07, 02:00 AM posted to alt.home.repair
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Posts: 5,044
Default Sprinkler system low water pressure

Senin wrote:

My automatic outdoor water sprinkler system suddenly has low to no
water pressure. It just came on. Some times it works fine, others it
has low pressure. Any ideas on what could cause that?

Hi,
Leak?
  #3  
Old July 14th 07, 02:03 AM posted to alt.home.repair
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Posts: 2,491
Default Sprinkler system low water pressure

Senin wrote:
My automatic outdoor water sprinkler system suddenly has low to no
water pressure. It just came on. Some times it works fine, others it
has low pressure. Any ideas on what could cause that?

You've looked at the system to make sure there are no broken pipes,
right? Sprinklers in our neighborhood used to get very low pressure in
early am because that was when everyone had their timers set to start.
City or well?
  #4  
Old July 14th 07, 02:27 AM posted to alt.home.repair
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Posts: 142
Default Sprinkler system low water pressure

Have you let it run through more than one zone, to determine if you have low
pressure in just one zone, or ALL zones ?

Know this might give you a good hint as to the problem........


James


  #5  
Old July 14th 07, 02:40 AM posted to alt.home.repair
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Posts: 35
Default Sprinkler system low water pressure

On Jul 13, 6:27 pm, "James" wrote:
Have you let it run through more than one zone, to determine if you have low
pressure in just one zone, or ALL zones ?

Know this might give you a good hint as to the problem........

James


It's crazy, sometimes they all work, sometimes none work, and
sometimes only one zone will come on full blast (and the others barely
trickle)---- the one that is the farthest away.

I live in the city. Inspected parts of the pipes, some are buried
underground and can't see them. Could it be related to the neighbors?

  #6  
Old July 14th 07, 02:46 AM posted to alt.home.repair
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Posts: 1,189
Default Sprinkler system low water pressure

On Jul 13, 9:40 pm, Senin wrote:
On Jul 13, 6:27 pm, "James" wrote:

Have you let it run through more than one zone, to determine if you have low
pressure in just one zone, or ALL zones ?


Know this might give you a good hint as to the problem........


James


It's crazy, sometimes they all work, sometimes none work, and
sometimes only one zone will come on full blast (and the others barely
trickle)---- the one that is the farthest away.

I live in the city. Inspected parts of the pipes, some are buried
underground and can't see them. Could it be related to the neighbors?


You might have a clog in one or all of the sprinkler heads. Remove
them, flush out the line, and try it.

  #7  
Old July 14th 07, 03:57 AM posted to alt.home.repair
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Posts: 142
Default Sprinkler system low water pressure

I would think that if there were a clog in a sprinkler head, why would they
work part of the time, but will not work at other times ?

How about the water pressure in your house.... does it seem to stay even,
always a good pressure ?

Do you use a pump, or do you have municipal water ?

James


  #8  
Old July 14th 07, 04:47 AM posted to alt.home.repair
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Posts: 3,053
Default Sprinkler system low water pressure

On Jul 13, 6:40 pm, Senin wrote:
On Jul 13, 6:27 pm, "James" wrote:

Have you let it run through more than one zone, to determine if you have low
pressure in just one zone, or ALL zones ?


Know this might give you a good hint as to the problem........


James


It's crazy, sometimes they all work, sometimes none work, and
sometimes only one zone will come on full blast (and the others barely
trickle)---- the one that is the farthest away.

I live in the city. Inspected parts of the pipes, some are buried
underground and can't see them. Could it be related to the neighbors?


Based on that description, it is a system pressure problem. I would
install a pressure gauge and see what the pressure is doing both with
the sprinklers on and off and at different times of the day.

I suspect that someone up thread has it correct - all the neighbors
trying to water at the same time.

Harry K

  #9  
Old July 14th 07, 04:56 AM posted to alt.home.repair
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Posts: 4,770
Default Sprinkler system low water pressure

On Jul 13, 8:58 pm, Senin wrote:
My automatic outdoor water sprinkler system suddenly has low to no
water pressure. It just came on. Some times it works fine, others it
has low pressure. Any ideas on what could cause that?


Sprinkler systems need both sufficient pressure and sufficient flow
volume. One or the other might not be up to the task.

It's entirely possible that it is a neighborhood problem (assuming you
don't run the sprinkler off of a well) - ask around. It is also
possible that you have a leak or diminished capacity water main. If
your house is older and the water main is galvanized, the inside may
be partially blocked - galvanizing doesn't last forever and it rusts
from the inside out. That would lower your flow volume considerably.
Test it by filling a 2 1/2 gallon bucket at different times of the day
and night. Time how long it takes to fill the bucket.

You need to get a water pressure gauge, ~$10, and hook it up to a hose
bib and take repeated reading throughout the day and night. Check the
pressure with nothing at all running, then turn on the sprinkler zones
one at a time and see what the water pressure is at the hose bib. You
should see the pressure drop as you turn on each zone, then the
pressure should build back up as the heads pop up. It should
stabilize at a pressure of at least 30 PSI - that's a fairly typical
minimum pressure for correct operation. If you see one zone has lower
pressure, you may have a leak.

I suspect it is a combination of problems.

R

  #10  
Old July 14th 07, 05:57 PM posted to alt.home.repair
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Posts: 35
Default Sprinkler system low water pressure

On Jul 13, 8:56 pm, RicodJour wrote:
On Jul 13, 8:58 pm, Senin wrote:

My automatic outdoor water sprinkler system suddenly has low to no
water pressure. It just came on. Some times it works fine, others it
has low pressure. Any ideas on what could cause that?


Sprinkler systems need both sufficient pressure and sufficient flow
volume. One or the other might not be up to the task.

It's entirely possible that it is a neighborhood problem (assuming you
don't run the sprinkler off of a well) - ask around. It is also
possible that you have a leak or diminished capacity water main. If
your house is older and the water main is galvanized, the inside may
be partially blocked - galvanizing doesn't last forever and it rusts
from the inside out. That would lower your flow volume considerably.
Test it by filling a 2 1/2 gallon bucket at different times of the day
and night. Time how long it takes to fill the bucket.

You need to get a water pressure gauge, ~$10, and hook it up to a hose
bib and take repeated reading throughout the day and night. Check the
pressure with nothing at all running, then turn on the sprinkler zones
one at a time and see what the water pressure is at the hose bib. You
should see the pressure drop as you turn on each zone, then the
pressure should build back up as the heads pop up. It should
stabilize at a pressure of at least 30 PSI - that's a fairly typical
minimum pressure for correct operation. If you see one zone has lower
pressure, you may have a leak.

I suspect it is a combination of problems.

R


Thanks. Where it stands now, the third, farthest away station works
great. The other two closer stations drip. Does this sound like an
electrical thing or a plumbing thing?

 




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