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Old 12-04-2014, 07:18 PM   #43
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SOoooo would it be this one:
Watts New Lead Free Adjustable 263A-LF Regulator, but with 2 1/2" diameter stainless steel oil filled 0-160 gauge, 4-4.5 gpm. LF has increased cost by $10.


OR this one:
Watts new Lead Free Adjustable 263A-LF Regulator,
2" diameter 0-160 gauge, 4-4.5 gpm. LF has increased cost by $10.
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Old 12-04-2014, 07:39 PM   #44
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Quote:
Originally Posted by focker View Post
SOoooo would it be this one:
Watts New Lead Free Adjustable 263A-LF Regulator, but with 2 1/2" diameter stainless steel oil filled 0-160 gauge, 4-4.5 gpm. LF has increased cost by $10.


OR this one:
Watts new Lead Free Adjustable 263A-LF Regulator,
2" diameter 0-160 gauge, 4-4.5 gpm. LF has increased cost by $10.
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Old 12-04-2014, 08:08 PM   #45
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The only thing I can think of is these simple "flow regulators" are dropping the pressure while water is flowing and when water is shut off there will be a "gradual" increase in pressure to whatever the campground pressure is. Since it seems these things are protecting the RV, it must be that the shock of shutting off high pressure is what damages plumbing, not the high static pressure built up when no water is being used.
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Old 12-05-2014, 11:01 AM   #46
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Quote:
Originally Posted by CampDaven View Post
Hi Joe!
I'm in Yuma and saw several pre-set Valterra pressure regulators. If they are not adjustable they do have a spring/valve in them that should regulate pressure just fine. However, they all have a restrictor that diminishes flow volume below acceptable levels for many folks by passing all water thru a inch hole that is about 1/4 inch.
The adjustable models by Valterra and Watts do not restrict flow volume and allow pressure adjustment.
Attachment 80505
Attachment 80506
Dave, some models by Valterra claim to have a much higher flow rate, if you can believe them!
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Old 12-05-2014, 11:09 AM   #47
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Water Regulator

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Originally Posted by MSHappyCampers View Post
Dave, some models by Valterra claim to have a much higher flow rate, if you can believe them!

Well, Joe, promotional phrases may be just that, and that a1/4 inch hole does restrict flow. I do know that this one from Valterra has full flow.
This is at full flow where static pressure was 50 psi, and is showing 40 at full flow.

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Old 12-05-2014, 11:13 AM   #48
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As for the size of the hole, all the PEX tubing in the RV is only 3/8" so it would seem to me that anything with a hole larger than that would be a waste!
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Old 12-05-2014, 11:47 AM   #49
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Water Regulator

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Originally Posted by MSHappyCampers View Post
As for the size of the hole, all the PEX tubing in the RV is only 3/8" so it would seem to me that anything with a hole larger than that would be a waste!

If your flow is good enough for a shower, I would not worry. But a 1/4 inch restrictor feeding 3/8 pex is definitely decreasing flow volume, about 50% (my rough math makes 3/8 to 1/4 about 1/2 of the original opening space).
I am feeding 5/8 inch all the way to the coach where it goes to 1/2 pex and to 3/8 at the faucets. 2 faucets on for a shower equals 3/4 inch flow capacity.
Maybe some hydraulic engineer types can chime in here, but I think if you have a 1/4 restrictor early in the flow, it is no better farther on.
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Old 12-06-2014, 06:55 AM   #50
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Quote:
Originally Posted by CampDaven View Post
If your flow is good enough for a shower, I would not worry. But a 1/4 inch restrictor feeding 3/8 pex is definitely decreasing flow volume, about 50% (my rough math makes 3/8 to 1/4 about 1/2 of the original opening space).
I am feeding 5/8 inch all the way to the coach where it goes to 1/2 pex and to 3/8 at the faucets. 2 faucets on for a shower equals 3/4 inch flow capacity.
Maybe some hydraulic engineer types can chime in here, but I think if you have a 1/4 restrictor early in the flow, it is no better farther on.
A 1/4" restrictor is an orifice and is less restriction than you would get from having a long 1/4" line. But, yes, it is a hindrance to flow.

Two 3/8" lines have half the cross sectional area of a 3/4" line and less than half the flow capacity due to a number of factors.

And the Valterra PRV has a flow capacity somewhere between the cheap straight PRV's and a 3/4" Watts style PRV. Running the shower with the Valterra up stream drops the pressure from it's 45 psi setting to about 35 psi, still plenty for a shower. The cheap ones will drop the pressure to under 20 psi. Not so good, but will still protect your plumbing from 110 psi park pressure.

And, yes, I was a hydraulic engineer in an earlier life, but I have better use of my time now than to run the calculations to give you exact answers. Plus there would be too many assumptions regarding line length, true inside diameter, fitting losses, actual roughness coefficient and on it goes. Sorry. Gotta love retirement!
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Old 12-07-2014, 03:24 PM   #51
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My neighbor changed this out for an adjustable Valterra like mine. Says the improved flow was superb.
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The restrictor orifice is 1/4 inch.
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Old 12-07-2014, 03:48 PM   #52
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Quote:
Originally Posted by Ramets View Post
I've had two of these and they both leaked without any way to tighten..
I managed to get an in-line (hose fittings) pressure gauge, this is designed like the junk 3/4 cylinder pressure regulator/flow restrictors only it is big inside .. You can see clean through it (3/4") brass tube with a tapped hole for the pressure gauge, Mine does NOT leak, though the gauge was junk and has been replaced a couple times..

Then you can use any non-gauged regulator before it.

Other mods.. Just upgraded shower to an Oygenics body spa with smart pause..... NICE SHOWER THIS MORNING.
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