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06-27-2013, 03:50 PM
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#1
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Rivet Master
1978 Argosy Minuet 6.0 Metre
Currently Looking...
Wauwatosa
, Wisconsin
Join Date: Oct 2010
Posts: 810
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Pressure regulator
Did the PO add a new inlet pressure regulator and leave the old one in? Or is the smaller one a check valve? And should there be a hose connected to it?
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Judging a person does not define who they are, it defines who YOU are.
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06-27-2013, 03:56 PM
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#2
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Rivet Master
1969 29' Ambassador
brooksville
, Florida
Join Date: Nov 2008
Posts: 1,270
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It look pretty new, it still has the tag on it. The one with the hose fitting is a pressure relief valve. The top sticker says its set for 125 psi. That pretty high before it start to do its job. Yes you could put a hose on it incase it ever opens (pressure is greater than 125) or if it starts to leak. I would replace it with a 70 psi relief valve. I'm sure others will chime in.
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Not all those who wonder are lost.
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06-27-2013, 04:02 PM
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#3
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Moderator
2017 26' Flying Cloud
Alamo Heights
, Texas
Join Date: Aug 2006
Posts: 8,500
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It doesn't look like a regulator, it looks like a safety valve. 125 PSI is WAY too high to be a regulator in an RV plumbing system. Re: the hose: Yeah, if it ever opened, it looks like it would flood the area without some sort of hose attached to direct the water elsewhere.
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— David
Zero Gravitas — 2017 Flying Cloud 26U | WBCCI# 15566
He has all of the virtues I dislike and none of the vices I admire. — Sir Winston Churchill
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06-27-2013, 04:08 PM
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#4
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Rivet Master
1969 29' Ambassador
brooksville
, Florida
Join Date: Nov 2008
Posts: 1,270
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I think the thing in front of it with the black cap and blue tag might be a pressure regulator... ??
__________________
Not all those who wonder are lost.
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06-27-2013, 05:44 PM
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#6
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Rivet Master
1978 Argosy Minuet 6.0 Metre
Currently Looking...
Wauwatosa
, Wisconsin
Join Date: Oct 2010
Posts: 810
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Thanks,
It does say 125psi "unless stamped otherwise". It is stamped 60.
Is the relief valve necessary? Shouldn't the regulator keep it from to much pressure?
__________________
Judging a person does not define who they are, it defines who YOU are.
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06-27-2013, 05:46 PM
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#7
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Rivet Master
1973 23' Safari
1977 23' Safari
2018 25' Flying Cloud
Palmer Lake
, Colorado
Join Date: Oct 2005
Posts: 4,092
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All the 70s Airstreams had these 125 psi relief valves. It's not too high, IMHO. It usually opens if you have the pressure up to 45 with your internal pump, then turn on the water heater--dumps a couple of ounces to handle the expansion as the water heats up. If you still have original copper, it can handle the pressure and newer PEX can handle 165 psi.
I think having an accumulator is a better idea. These old relief valves will begin to leak if they open, so it's time to get rid of them (and install an accumulator -- $45).
Zep
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06-27-2013, 10:45 PM
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#8
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Rivet Master
2000 25' Safari
Davidson County
, NC Highlands County, FL
Join Date: Aug 2006
Posts: 4,493
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Quote:
Originally Posted by tiger
Thanks,
It does say 125psi "unless stamped otherwise". It is stamped 60.
Is the relief valve necessary? Shouldn't the regulator keep it from to much pressure?
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The pressure relief valve is not functioning since it is capped. It probably started leaking so a PO plugged/capped it. Where the plug is now, there would have been a pipe that would have directed water to the exterior when the incoming water service exceeded the pressure set point.
The pressure regulator valve that is inline beyond the relief valve would have reduced the incoming pressure to a lower level if needed.
__________________
Alan
2014 Silverado LTZ 1500 Crew Cab 5.3L maximum trailering package
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