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  #11  
Old 07-25-2012, 05:24 PM
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Quote:
Originally Posted by Wet_Boots View Post
One small advantage to the basement meters - the effects of poor design don't extend to the neighbors
So, as the neighbors are sucking the supply down and causing the hammer, it is not the sprinkler system's fault?
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  #12  
Old 07-25-2012, 06:02 PM
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Originally Posted by Mike Leary View Post
So, as the neighbors are sucking the supply down and causing the hammer, it is not the sprinkler system's fault?
I think a curbside meter feeding an oversized system could drop street pressure at startup, or maybe it is subject to banging valves, if the design is really bad.

I think the neighbor with new pipe noises has to suck it up and make sure they are 'insulated' from sudden pressure drops in the street. Expense would be on their dime.
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  #13  
Old 07-25-2012, 06:09 PM
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I've seen this problem several times, usually when there are two meters in the same pit. The sprinkler system is trying to flow more water than the supply will allow. The meter is going crazy and vibrating, causing the noise even to the neighbor. I've had some luck turning the ball valve down about half, it doesn't seem to effect the system.
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  #14  
Old 07-25-2012, 06:27 PM
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I see shared meter taps never.
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  #15  
Old 07-25-2012, 06:38 PM
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Originally Posted by Wet_Boots View Post
I see shared meter taps never.
Was fairly common 25-30 years ago but most have been done away with.
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  #16  
Old 07-25-2012, 06:54 PM
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Quote:
Originally Posted by Wet_Boots View Post
Expense would be on their dime.
The expense could be on the install contractor who overzoned the system.
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  #17  
Old 07-25-2012, 07:15 PM
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It may not be "overzoned" but when it drains down, the flow to refill the pipes causes the hammer.
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  #18  
Old 07-25-2012, 07:41 PM
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Originally Posted by irritation View Post
It may not be "overzoned" but when it drains down, the flow to refill the pipes causes the hammer.
If there was any slope, that could have happened without SAMs. Also Dana's favorite "auto-drains" could have done the same thing. If you were the next door neighbor, and woke up hearing that hammer, what would you do?
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  #19  
Old 07-25-2012, 07:52 PM
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Also Dana's favorite "auto-drains" could have done the same thing.
Never said they we my favorite. I said we use them on mains and manifolds where necessary, not laterals.
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  #20  
Old 07-25-2012, 07:58 PM
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Never said they we my favorite. I said we use them on mains and manifolds where necessary, not laterals.
What, no sense of humor now that I'm released from the mental hospital?
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