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  #11  
Old 08-04-2012, 12:42 PM
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Originally Posted by cgaengineer View Post
If you dont exceed it's ratings the gauge is accurate according to a bucket test.

Now these are very accurate. I have one and have used it many times.

http://www.pollardwater.com/pages_pr...LFdiffuser.asp
Wow! That's a no b.s. tester, except I have no fire hydrants on any of my sites.
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  #12  
Old 08-04-2012, 01:05 PM
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Wow! That's a no b.s. tester, except I have no fire hydrants on any of my sites.
I did many hydrant flow tests at the company I used to work for. These tests were for fire protection and new subdivisions mostly. You haven't seen flow until you see 4000 gallons per minute coming out of a 2.5" hydrant bib at almost 200 psi. A ground shaking experience.
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Old 08-04-2012, 01:52 PM
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I use hydrant adapters to get a street pressure measurement when a home has a PRV. Most all hydrants have the 2.5 inch NST threads, but recently, I found some that had 2.5 inch NPSH threads.
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Old 08-04-2012, 01:55 PM
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I use hydrant adapters to get a street pressure measurement when a home has a PRV. Most all hydrants have the 2.5 inch NST threads, but recently, I found some that had 2.5 inch NPSH threads.
I have both versions of hose adapters but have found that the flow gauge fit on every hydrant around here.
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  #15  
Old 08-04-2012, 01:59 PM
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Originally Posted by cgaengineer View Post
I did many hydrant flow tests at the company I used to work for. These tests were for fire protection and new subdivisions mostly. You haven't seen flow until you see 4000 gallons per minute coming out of a 2.5" hydrant bib at almost 200 psi. A ground shaking experience.
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my pollardwater catalog #172 only has 160psi/2120gpm max gauges rated for 2.5 inch. Got a link to the 200/4000?
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  #16  
Old 08-04-2012, 02:02 PM
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my pollardwater catalog #172 only has 160psi/2120gpm max gauges rated for 2.5 inch. Got a link to the 200/4000?
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I had to swap the gauge. It broke the stock one. It's just a piezo tube with a standard size orrifice. Those pressures were on a hydrant I tested.
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Old 08-04-2012, 02:25 PM
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Originally Posted by cgaengineer View Post
I had to swap the gauge. It broke the stock one. It's just a piezo tube with a standard size orrifice. Those pressures were on a hydrant I tested.
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if you could post the link to the pressure/flow gauge i would be greatful. dual read gauges for the pressure/flow range you stated are tough to find. thanks
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  #18  
Old 08-04-2012, 02:25 PM
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Originally Posted by cgaengineer View Post
I have both versions of hose adapters but have found that the flow gauge fit on every hydrant around here.
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You have a single hydrant-to-garden-hose adapter for the NPSH threads?
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  #19  
Old 08-04-2012, 02:30 PM
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You have a single hydrant-to-garden-hose adapter for the NPSH threads?
i have one boots, posted pics of it 3 years ago.
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  #20  
Old 08-04-2012, 02:44 PM
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I would tend to believe it was of the slightly larger NST threads - plenty of garden-hose adapters for them - the NPSH threads are about a quarter-inch smaller in diameter, and I don't see a a garden-hose adapter for NPSH hydrants
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