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blaczero

USA

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Joined: 10/16/2020

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Posted: 04/21/21 06:00am Link  |  Quote  |  Print  |  Notify Moderator

Hey everyone. Overall water is fine, just the pressure is strange.

This didn't happen the first few trips. The last 2 campgrounds we are at this happens. When you turn on the water, it's good pressure, then over 10 seconds or so, the pressure drops to about half what it starts at and stays steady.

I have done the following

- 2 different pressure regulators
- removed filters from the line (helped slightly)
- tested all outlets in the rig, they all do this
- checked the city water inlet screen to see if it's gunked up
- when i run the pump from fresh water tank, this doesn't happen

any ideas?

MFL

Midwest

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Posted: 04/21/21 06:27am Link  |  Quote  |  Print  |  Notify Moderator

Since the pump maintains good pressure, I would suspect the CG water supply. It may be pressure building in their line, which you are releasing, after a short period of running water.

You could try disconnecting your hose at the bib, wait a bit, turn water on, check if pressure drops right there at the source, after 10 seconds or so.

Jerry





Old-Biscuit

Verde Valley

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Posted: 04/21/21 09:45am Link  |  Quote  |  Print  |  Notify Moderator

Do you have pressure 'regulators' or those 'flow restrictors'??

Where you you have them ...
At hose bibb, at connection on RV etc?
Only using one not both correct?

As suggested......
How is pressure/flow thru end of hose With and W/O those water devices ??



Restrictor......junk/erratic
[image]


Regulator....more consistent control
[image]


Is it time for your medication or mine?


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Lynnmor

Red Lion

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Posted: 04/21/21 09:58am Link  |  Quote  |  Print  |  Notify Moderator

Old-Biscuit wrote:

Do you have pressure 'regulators' or those 'flow restrictors'??

Where you you have them ...
At hose bibb, at connection on RV etc?
Only using one not both correct?

As suggested......
How is pressure/flow thru end of hose With and W/O those water devices ??



Restrictor......junk/erratic
[image]


Regulator....more consistent control
[image]


They are actually pressure regulators but they are junk. Just testing them on a hose will not prove anything, they might flow well under that condition.





Lwiddis

Glass Creek area, California

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Posted: 04/21/21 10:14am Link  |  Quote  |  Print  |  Notify Moderator

Fluctuating campground water pressure is my primary reason for filing the freshwater tank and using the pump.


Winnebago 2101DS TT & 2020 Chevy Silverado 1500 LTZ Z71, 300 watt solar-parallel & MPPT, Trojan T-125s. TALL flag pole. Prefer USFS, COE, BLM, NPS, TVA, state & county camps. Bicyclist! 14 year Army vet-11B40 then 11A - (MOS 1542 & 1560) IOBC & IOAC grad


dedmiston

The West

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Posted: 04/21/21 02:28pm Link  |  Quote  |  Print  |  Notify Moderator

Is it only happening at this one camp, or has it been happening at other stops too?


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Old-Biscuit

Verde Valley

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Posted: 04/21/21 02:48pm Link  |  Quote  |  Print  |  Notify Moderator

dedmiston wrote:

Is it only happening at this one camp, or has it been happening at other stops too?


OP stated:
This didn't happen the first few trips. The last 2 campgrounds we are at this happens.

dedmiston

The West

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Posted: 04/21/21 02:53pm Link  |  Quote  |  Print  |  Notify Moderator

Old-Biscuit wrote:

dedmiston wrote:

Is it only happening at this one camp, or has it been happening at other stops too?


OP stated:
This didn't happen the first few trips. The last 2 campgrounds we are at this happens.


Yeah. That just seemed so strange to me. Not sure if I was misreading it.

wa8yxm

Wherever I happen to park

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Posted: 04/21/21 03:31pm Link  |  Quote  |  Print  |  Notify Moderator

OK. if there is something restricting the flow. Be it one of the cheap Pressure Regulators (That Valterra up-thread with the pressure gauge I am told is good but I've never tested it.. more later) like the 3/4" about cylinder types even if they are called "HIGH FLOW" or some other restriction like a partially clogged inlet screen or valve.. Then there is an "Air Cushion" in the water heater.

When water is OFF. the pressure in everything goes up to around 50 PSI. then when you first turn on the water the HOT tank can discharge back into the cold line. Normally not enough hot gets into the cold line for you to notice. But as the pressure in the HOT tank goes down... The flow slows since not enough water is entering the RV.

Now.. this should only happen on city water. not on "Tanked" water

What I did.. originally I used a WATTS 3/4" in-line regulator till it aged out then a ZURIN, also 3/4 inch (1/2 should do it but believe it or not would have cost more at least the ZURIN I put a gauge after the regulator and Turned on a major water sucker.

Cheap ones.. Watch the pressure go down
Cheap HIGH FLOW. Watch the pressure go down
Aged out Watts (I could not find a rebuild kit) Watch the pressure go down
Brand new Zurin.... Watched the needle sit there on 50 like it was glued.

Later. For other reasons.. I stopped worrying about pressure regulation on the city side. Filled the 80 gallon on board and pumped it out for everything. That worked great. and Solved a rare other issue (over chlorination of city water)


Home is where I park it.
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after a semi "nicked" it. Still have the radios
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Dick_B

Palos Heights, IL USA

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Posted: 04/21/21 05:57pm Link  |  Quote  |  Print  |  Notify Moderator

Is there a back flow preventer in the CG inlet port in the RV? It could be clogged or just plain stuck. Replace the plastic ones with a metal one.


Dick_B
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