Water Pressure Regulators and Flow Rates
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Printed Date: 04 May 2025 at 8:25am
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Topic: Water Pressure Regulators and Flow Rates
Posted By: CharlieM
Subject: Water Pressure Regulators and Flow Rates
Date Posted: 29 Aug 2016 at 6:53pm
Water pressure regulators are a necessary accessory in
campgrounds to protect against high and damaging pressures. While most
CGs don't exceed 65psi, which is OK for modern campers, some can exceed
100psi which can blow a hose or fitting. That can be a real mess even in
an aluminum camper.
The common Camco Valterra brass inline
regulators, even the "high flow" models, do a good job of limiting
pressure, but they also limit the flow rate. This is noticeable in the
shower and when filling pots. If you get an initial high flow and then
it noticeably drop off it's the regulator restricting flow. The standard
option is an expensive household regulator such as a Watts, but there
is now an alternative. It's a Fairview model WR-RV55:
http://www.fairviewfittings.com/products/fittings/brass-fittings/water-hose-fittings/leadfree-rv-water-pressure-regulator-117627.html - www.fairviewfittings.com/products/fittings/brass-fittings/water-hose-fittings/leadfree-rv-water-pressure-regulator-117627.html
They are available from:
http://www.rvwaterfilterstore.com/PressureRegulators.htm - www.rvwaterfilterstore.com/PressureRegulators.htm
I measured the time to fill a 6 gallon jug from my garden pump at 40psi through 20' of 3/4" hose:
Open hose, no restriction: 29 sec, 12.4GPM
Fairview regulator: 36 sec, 10GPM
Camco Valterra "high flow": 50 sec, 7.2GPM
This should make a noticeable improvement in show flow, especially at low pressure CGs.
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Charlie
Northern Colorado
OLD: 2013 RP-172, 2010 Honda Pilot 3.5L 4WD
PRESENT: 2014 Camplite 21RBS, 2013 Supercharged Tacoma 4L V6 4WD
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Replies:
Posted By: osage
Date Posted: 29 Aug 2016 at 7:27pm
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what did the Camco Valterra reg. do per min.
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Posted By: CharlieM
Date Posted: 29 Aug 2016 at 8:36pm
I only measured the Camco Valterra high flow unit. It measured 7.2GPM. They have a "normal" unit, which I also have, but I didn't measure it. It is less than 7.2GPM.
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Charlie
Northern Colorado
OLD: 2013 RP-172, 2010 Honda Pilot 3.5L 4WD
PRESENT: 2014 Camplite 21RBS, 2013 Supercharged Tacoma 4L V6 4WD
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