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Old 05-16-2021, 06:50 AM   #1
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Low water pressure

I have a 2018 Isata 4. We are on our 3rd week traveling from Nevada to Georgia. We have had low water pressure throughout the RV for the past week. At first I thought it was the filter. Our pressure gauge from the faucet reads 40 lbs. This is our 3rd Camp ground so I know it’s not a pressure problem at the campground.
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Old 05-16-2021, 06:52 AM   #2
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You have a flow problem. Not a pressure problem. You need to hunt down the restriction.

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Old 05-16-2021, 07:04 AM   #3
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You have a flow problem. Not a pressure problem. You need to hunt down the restriction.

Bruce
I would start at where your hose connects to the RV. Make sure that screen washer isn’t all clogged up with junk. Then work your way from there up through the system until you find something causing a restriction. There shouldn’t be much to look for and it shouldn’t be hard to find since it’s your whole system with low flow.

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Old 05-16-2021, 07:06 AM   #4
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I’m not a mechanical guy. There’s not much I can check. Would removing the pressure gauge help push through any debris?
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Old 05-16-2021, 08:11 AM   #5
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I’m not a mechanical guy. There’s not much I can check. Would removing the pressure gauge help push through any debris?
What do you mean by “pressure gauge”? Do you have a pressure reducing valve with a gauge connected to your hose? If so, that could be the problem. There are so many versions of these and many of the cheaper types will restrict the flow a lot — especially if they have collected a little bit of debris in them. Even though the pressure gauge reads 40psi, that has nothing to do with flow restriction. If the pressure reducing valve is restricting flow, it will still read the correct psi, but you will see a very noticeable drop on your pressure gauge when you turn a faucet on in the RV. Take the pressure reducing valve off of the hose and see if anything changes. If you’re afraid to do that, watch the gauge as somebody turns a faucet on inside. If the pressure on the gauge drops more than 10psi, your problem is at or before your pressure reducing valve. If it doesn’t drop that much, the restriction is somewhere after the pressure reducing valve.

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Old 05-16-2021, 08:34 AM   #6
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What do you mean by “pressure gauge”? Do you have a pressure reducing valve with a gauge connected to your hose? If so, that could be the problem. There are so many versions of these and many of the cheaper types will restrict the flow a lot — especially if they have collected a little bit of debris in them. Even though the pressure gauge reads 40psi, that has nothing to do with flow restriction. If the pressure reducing valve is restricting flow, it will still read the correct psi, but you will see a very noticeable drop on your pressure gauge when you turn a faucet on in the RV. Take the pressure reducing valve off of the hose and see if anything changes. If you’re afraid to do that, watch the gauge as somebody turns a faucet on inside. If the pressure on the gauge drops more than 10psi, your problem is at or before your pressure reducing valve. If it doesn’t drop that much, the restriction is somewhere after the pressure reducing valve.

Bruce


Thankyou. I will give it a try.
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Old 05-16-2021, 08:46 AM   #7
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You may want to clean your aerators at the faucets. That seems to be a common problem.
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Old 05-16-2021, 09:48 AM   #8
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You may want to clean your aerators at the faucets. That seems to be a common problem.
That’s a good thing to do as well, but the OP is experiencing low flow throughout the RV which is another issue.

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