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Old 05-23-2018, 02:14 PM   #1
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city water flow

I have a 2007 Suncruiser. My city water does not provide very much pressure. When using the tank water, I have lots of pressure. Any suggestions.



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Old 05-23-2018, 02:20 PM   #2
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What's the water pressure like at the supply? If good, I'd look at your pressure regulator next.

Bob Hyatt
2018 Tiffin Allegro 32SA
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Old 05-23-2018, 06:27 PM   #3
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The city water inlet has only whatever the outside water source supplies, so check that at the campsite water faucet first.

It is possible your city inlet has a partially clogged check valve that is reducing the flow (water volume) that can get through the inlet. There may also be a screen there, to filter out gravel. The screen is repalceable and should be available wherever plumbing parts are sold. The check valve can be cleaned, or you can replace the entire inlet if you prefer. They are a standard RV item and should not be expensive.

Probably looks like this one:

Gary Brinck
Former owner of 2004 American Tradition
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC
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Old 05-23-2018, 08:27 PM   #4
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I drilled out the cheap plastic check valve...did not work even after replacing the O ring. This increased the flow dramatically and I eventually replaced with a real metal check valve.
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Old 05-24-2018, 07:30 AM   #5
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DO you use a pressure regulator on the city water (you should) these come in basically 5 flavors
Standard, a brass or plastic cylinder, male hose fitting on one end female on the other, all one piece about 3/4 " in diamater Junk

High Flow: Same as above but with "Wings" on a plastic body or a bright plastic/rubber grip on the female end, like above Junk

Sur-Flow This is the regulator BUILT INTO many RV's. When new I give it a 9 out of possible 10 As it ages read on

Valterra adjustable.. I have not tested this one but others rate it high 9 or 10

Watts and Zurin "Whole house" mine are 3/4 inch.. THis is a brass assembly the upper housing is bell shaped. the bolt that would attach a genuine bell to the yoke is the pressure adjustment. 3/4 " was cheaper than 1/2 Inch when I got mine, plus you need hose adapters (3/4" IPT to Garden hose) New these are a 10 and then some.

What is a 10: I set my Zurin at 50 PSI static (no flow) then opened the outside shower full.. No head, full flow and watched the needle on a pressure guage not even wiggle. let alone move, that's a 10.

All the above good ones as they age however the membranes get stiff and 9, Rebuild kits are out there for Watts and Zurin. I need to rebuild my watts.
Home is where I park it!
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Old 05-24-2018, 08:51 AM   #6
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No one has mentioned the simple and quite possible old water filter. Has that been changed within the last year? That would cause what OP describes.
Shell Bleiweiss
2014 1/2 Thor Challenger 37KT
Sedona, AZ
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Old 05-24-2018, 10:38 AM   #7
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Hi Jim! Welcome to IRV2! We're sure glad you joined the gang!

I think others have covered it!

Good luck, happy trails, and God bless!

Joe & Annette

2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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