Water Pressure Regulators and Flow Rates

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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:

www.fairviewfittings.com/products/fittings/brass-fittings/water-hose-fittings/leadfree-rv-water-pressure-regulator-117627.html

They are available from: 

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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CharlieM Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 23 Nov 2012 Location: N. Colorado Online Status: Offline Posts: 1797	Topic: Water Pressure Regulators and Flow Rates 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: www.fairviewfittings.com/products/fittings/brass-fittings/water-hose-fittings/leadfree-rv-water-pressure-regulator-117627.html They are available from: 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.
	Charlie Northern Colorado OLD: 2013 RP-172, 2010 Honda Pilot 3.5L 4WD PRESENT: 2014 Camplite 21RBS, 2013 Supercharged Tacoma 4L V6 4WD

osage Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 13 Mar 2016 Online Status: Offline Posts: 146	Posted: 29 Aug 2016 at 7:27pm
	what did the Camco Valterra reg. do per min.

CharlieM Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 23 Nov 2012 Location: N. Colorado Online Status: Offline Posts: 1797	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.
	Charlie Northern Colorado OLD: 2013 RP-172, 2010 Honda Pilot 3.5L 4WD PRESENT: 2014 Camplite 21RBS, 2013 Supercharged Tacoma 4L V6 4WD