Cold Water Pressure
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02-12-2007, 02:12
Post: #1
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Cold Water Pressure
Hi All,
I am happy with the domestic water pressure. I am just curious as to, Why the cold water pressure is less than the hot water pressure. Has anyone else noticed this phenomena??? Also, on the hot water heater Cold inlet, there is an air pressure operated Versa Products valve. This is operated to blow out the water lines with coach air for winterization. So, Why is there three cold water lines hooked to this valve, that enter the cold side of the hot water heater ??? Could this valve contribute to the lower water pressure on the cold water line???? Bill 88 FC Michigan |
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02-12-2007, 04:45
Post: #2
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Cold Water Pressure
Bill,
I had water pressure problems with my 84FC that were different than yours, but maybe there is some connection. My air operated valve on the cold water intake of the WH has 3 lines run to it:Cold water line, air line, and drain line. As I see it, my valve only controls filling and draining of the water heater with the blow-out plumbing being elsewhere. After draining the HWH, I could get very little HOT water pressure. Thanks to Tom W., I found that the air operated valve was stuck between the "fill" and "drain" positions. I took the end cap off of the valve and manually moved it to the "fill" position and that took care of the problem. It takes air to move my valve to "drain", but there must be a spring in there to move it back to "fill". Sounds like yours if plumbed differently, but maybe something is up with that air valve. David Hollis 84FC35 Springfield,IL --- In WanderlodgeForum@yahoogroups.com, "pattypape" wrote: > > > > Hi All, > > > I am happy with the domestic water pressure. > > I am just curious as to, Why the cold water pressure is less than the > hot water pressure. Has anyone else noticed this phenomena??? > > Also, on the hot water heater Cold inlet, there is an air pressure > operated Versa Products valve. This is operated to blow out the water > lines with coach air for winterization. > So, Why is there three cold water lines hooked to this valve, that > enter the cold side of the hot water heater ??? > Could this valve contribute to the lower water pressure on the cold > water line???? > > Bill 88 FC Michigan > |
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02-12-2007, 09:20
Post: #3
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Cold Water Pressure
Bill, Dave,
My 78 also has high hot water presure. I noticed when I turned off the pump and opened up the kitchen sink fawcet, the hot ran for quite a while longer than the cold. There must be somewhere where air gets compressed in the system that maintains the pressure, but unless the hot water tank is not completely full, I don't know where. I did have a problem on one trip. When I arrived at the RV park there was alot of hot water leaking from the emergency bypass valve on the hot water heater. I opened the sink fawcet and there was lots of presure, once it normalized everything was fine. I haven't had that problem since. I beleive there are one way valves to prevent hot water from running back into the supply lines, so this would allow the expanding hot water to build pressure, which has no escape route other than the fawcets or the presure releif valve. Gardner 78FC33 --- In WanderlodgeForum@yahoogroups.com, "dthollis1961" > > Bill, > > I had water pressure problems with my 84FC that were different than > yours, but maybe there is some connection. My air operated valve on > the cold water intake of the WH has 3 lines run to it:Cold water > line, air line, and drain line. As I see it, my valve only controls > filling and draining of the water heater with the blow-out plumbing > being elsewhere. After draining the HWH, I could get very little > HOT water pressure. Thanks to Tom W., I found that the air operated > valve was stuck between the "fill" and "drain" positions. I took > the end cap off of the valve and manually moved it to the "fill" > position and that took care of the problem. It takes air to move my > valve to "drain", but there must be a spring in there to move it > back to "fill". Sounds like yours if plumbed differently, but maybe > something is up with that air valve. > > David Hollis 84FC35 Springfield,IL > > > --- In WanderlodgeForum@yahoogroups.com, "pattypape" > wrote: > > > > > > > > Hi All, > > > > > > I am happy with the domestic water pressure. > > > > I am just curious as to, Why the cold water pressure is less than > the > > hot water pressure. Has anyone else noticed this phenomena??? > > > > Also, on the hot water heater Cold inlet, there is an air pressure > > operated Versa Products valve. This is operated to blow out the > water > > lines with coach air for winterization. > > So, Why is there three cold water lines hooked to this valve, that > > enter the cold side of the hot water heater ??? > > Could this valve contribute to the lower water pressure on the cold > > water line???? > > > > Bill 88 FC Michigan > > > |
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02-13-2007, 03:27
Post: #4
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Cold Water Pressure
I have a similar problem of low cold water pressure/flow but only in
the bath area (sink & shower). I suspect a clogged mixing valve. I have it on my list of items to check this spring. David Hanvy 89WB Crosby, TX --- In WanderlodgeForum@yahoogroups.com, "dthollis1961" > > Bill, > > I had water pressure problems with my 84FC that were different than > yours, but maybe there is some connection. My air operated valve on > the cold water intake of the WH has 3 lines run to it:Cold water > line, air line, and drain line. As I see it, my valve only controls > filling and draining of the water heater with the blow-out plumbing > being elsewhere. After draining the HWH, I could get very little > HOT water pressure. Thanks to Tom W., I found that the air operated > valve was stuck between the "fill" and "drain" positions. I took > the end cap off of the valve and manually moved it to the "fill" > position and that took care of the problem. It takes air to move my > valve to "drain", but there must be a spring in there to move it > back to "fill". Sounds like yours if plumbed differently, but maybe > something is up with that air valve. > > David Hollis 84FC35 Springfield,IL > > > --- In WanderlodgeForum@yahoogroups.com, "pattypape" > wrote: > > > > > > > > Hi All, > > > > > > I am happy with the domestic water pressure. > > > > I am just curious as to, Why the cold water pressure is less than > the > > hot water pressure. Has anyone else noticed this phenomena??? > > > > Also, on the hot water heater Cold inlet, there is an air pressure > > operated Versa Products valve. This is operated to blow out the > water > > lines with coach air for winterization. > > So, Why is there three cold water lines hooked to this valve, that > > enter the cold side of the hot water heater ??? > > Could this valve contribute to the lower water pressure on the cold > > water line???? > > > > Bill 88 FC Michigan > > > |
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