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psi wont stay up 5

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palecactus

palecactus

Mechanical
Jun 21, 2006
26
hello,
im working on a test station to measure water flow of irrigation parts at 20 psi . problem is that when i start testing parts that put out 14 gph and higher (up to 60gph) i cant get to 20 psi. i have a pressure releif valve in front of the regulator and the small procon series 1 pump has a pressure releif vale too. am i putting out the same amount of water that im putting in on the larger volume parts? would a larger pump be the answer?
any help would be appreciated.
 
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You can delete your own post, just hit the red flag and ask management to delete it. They're very responsive to red flags.

David
 
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Big-

As David pointed out, use the Red Flag option. Management is indeed very responsive to red flags. There's even a little box to type in some comments as to why you think a post should be removed or you can request the entire thread to be removed.

jt
 
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We'll leave it as a lesson in not being explicit in requests for assistance, not giving the correct or confusing data... and trying to be too helpful. I think most of the time we are all trying to be so helpful in cases like this that we actally make things more confusing in the process.

BigInch[worm]-born in the trenches.
 
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BigInch,
Several of us went on a mission a couple of years ago to try to be the first responder to unclear/incomplete posts and ask the OP to clear up their question prior to people making-up stuff to fill in details. You won't believe the grief we got from other regular members. A couple of us still do it sometimes, but it rarely does any good. Too often the OP will ask an incomplete question and then go away and never respond in the thread again.

The only thing that I've found that works is to respond to the discussion instead of the OP (and often be accused of taking the conversation into the weeds when I ask a responder if they really believe that water is more compressible than air).

David
 
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I backed out after the thread became incoherent and petty.

No, I realized I made a mistake in my wording but by the time I logged back in, the thread had deteriorated to sniping. I simply mentioned that air in the system could be a potential problem as air is a problem in hydrostatic testing as it occasionally prohibits reaching nad maintaining the required test pressures and it can also cause an air-lock in the system. I, obvioulsy mistakenly, thought that since the system could not reach the required pressure, one of the things that could be looked at was air in the system.

I no longer responded because a member made the comment of going off on a tamgent. I understand how water and air interact in a closed system and again made a mistake in the wording of my post, my apologies and I'll purpose to not make a mistake again.

Greg Lamberson
Consultant - Upstream Energy
Website:
 
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sorry for not responding when it is appropriate for you..tho i appreciate the help from the others. sometimes people get agitated when they cant find the solution and scrap the whole thing. im not like that. the motor is fine,the filter is replaced, the pump is too small and the main regulator needs to be changed. period.everybody makes mistakes at one time. should we a be so critical?
 
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Greg, no offense ment. I realized you just made a simple mistake and I was only trying to pre-empt the next 30 posts from ripping you apart.

Palecactus, I didn't intend to be "critical", just critical...and nothing personal intended. You gotta' admit you muddied the water with the posts after "happy new year" and confused most all of us. That's all. In any case, glad you got everthing worked out and we all hope its a start for a good coming year.

BigInch[worm]-born in the trenches.
 
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Just out of curiosity, how did you determine that the pump is too small and the regulator needs to be changed?

Never change more than one thing at a time.

And please, I'm just curious so don't start ripping me apart. I look at the pump curves, and see a pump that has the output capabilities. Why would you scrap the pump before changing the regulator?



Charlie
 
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Charlie, the symptoms described by the OP are usually the result of an undersized pump. Not always but probably 9 times out of 10.

Without knowing the system curve it is impossible to say that the pump has the output capabilities.



 
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IRstuff,
That's what I was thinking, and that's why I posted the same page.

I'm trying to get the set-up so I can get an idea of what the system looks like.

I've designed and tested many pumps,If we know how the system is organized, we might get a picture at what's wrong.

But I suppose I'm giving up on this thread... seems like a lost cause now.

Charlie
 
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The OP states that he's using "small procon series 1 pump."

TTFN



 
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Well, my apologies to FACS for missing his posting.

TTFN



 
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If there is only one part I agree that it is not a pump problem. I read the OP as "parts" but reading again he later said "part".

Is there one part or multiple parts on a header?

Or is this thread dead?
 
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