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Old 07-27-2014, 03:56 PM   #1
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Low water flow on city water?

Hi,

We believe we have identified our trailer as a '77 Jayco Wren Deluxe. According to the manual:

CITY WATER SYSTEM OPERATION
Connect a flexible hose with 3/4" fitting to the city water service and
the R.V. water filler fitting. Turn on the city water and you will
receive pressure at all faucets, the toilet, and the water heater.

We used a 6' garden hose that came with our trailer to hook up to a spigot in my back yard. Water flows freely and with sufficient pressure when the hose is not connected to the trailer.

I connected it to the trailer and eventually we get a tiny trickle of water in the kitchen and bathroom faucets. Is there some kind of filter that needs to be cleaned? Any other reason city water is not pressurizing/flowing in our trailer?

Thanks in advance,

James and Becky (total trailer noobs)
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Old 07-27-2014, 04:46 PM   #2
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You say sufficient pressure.. What is your water pressure?? What is perceived as good water pressure by visually looking at a free flowing stream coming out of a hose can be very deceiving!! Too small of a diameter hose can drastically alter your pressure and flow. Have you used this trailer in the past or is this a new unit to you. If you have established that you really do have good unrestricted pressure into the city water inlet, you need to start looking for kinked or collapsed internal hoses. If its a 77 trailer, I doubt if there is any kind of filter on it unless a previous owner installed one.
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Old 07-27-2014, 05:02 PM   #3
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This is just one possibility...

If it has a pump and can connect to city water, there has to be a check valve somewhere to keep the pump from pumping out the city water inlet. Maybe that check valve is stuck mostly closed. It could be a separate check valve in the water line, or it could be built into the fixture you attach the hose to.
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Old 07-27-2014, 05:42 PM   #4
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Originally Posted by Ela1948 View Post
You say sufficient pressure.. What is your water pressure?? What is perceived as good water pressure by visually looking at a free flowing stream coming out of a hose can be very deceiving!! Too small of a diameter hose can drastically alter your pressure and flow. Have you used this trailer in the past or is this a new unit to you. If you have established that you really do have good unrestricted pressure into the city water inlet, you need to start looking for kinked or collapsed internal hoses. If its a 77 trailer, I doubt if there is any kind of filter on it unless a previous owner installed one.
It's a spigot off the main line to my house. My house has adequate water pressure. The kitchen faucet is just dripping at this stage... not even running.
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Old 07-27-2014, 06:12 PM   #5
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This is just one possibility...

If it has a pump and can connect to city water, there has to be a check valve somewhere to keep the pump from pumping out the city water inlet. Maybe that check valve is stuck mostly closed. It could be a separate check valve in the water line, or it could be built into the fixture you attach the hose to.
The fixture the hose connects to is a metal pipe that tees just inside the trailer wall. One side goes toward the water pump/fresh water tanks and the other towards the back of the trailer towards the shower, hot water heater and the kitchen.
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Old 07-27-2014, 06:34 PM   #6
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If you run the water pump (with water in the storage tank) what happens?
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Old 07-27-2014, 09:01 PM   #7
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If you run the water pump (with water in the storage tank) what happens?
I called the previous owner and that's what he suggested. I ran the pump for 20-30 minutes, no change.
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Old 07-27-2014, 09:20 PM   #8
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Pull one of the strainers off the faucet. May be plugged with "stuff". Check the flow without the strainer. Look for a whole house filter. Open the vent on the water heater and check the flow. Any difference in hot vs cold? How does the toilet flush and shower flow?
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Old 07-27-2014, 10:37 PM   #9
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Pull one of the strainers off the faucet. May be plugged with "stuff". Check the flow without the strainer. Look for a whole house filter. Open the vent on the water heater and check the flow. Any difference in hot vs cold? How does the toilet flush and shower flow?
Funny you should mention that. We bought the trailer with the kitchen faucet off. It was broken. We bought a new one today. I'd turned the water on for a second the day before and my wife said water shot out of the kitchen faucet supply pipes, so thought there was no problem.

There's no difference between hot and cold, kitchen and bathroom, shower or toilet. All of them just trickle water. There's got to be a valve or filter somewhere! We just can't find it!
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Old 07-28-2014, 07:31 AM   #10
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....I'd turned the water on for a second the day before and my wife said water shot out of the kitchen faucet supply pipes, so thought there was no problem. ....
So your city water system supplied water a couple of days ago?

Quote:
Originally Posted by RVhiker View Post
If you run the water pump (with water in the storage tank) what happens?
Quote:
Originally Posted by daoist View Post
I called the previous owner and that's what he suggested. I ran the pump for 20-30 minutes, no change.
1) Does that mean that the water supply is OK when the pump is running? **If so**, that eliminates most issues with the water supply system in your trailer. There is a check valve somewhere. On newer trailers (don't know about 1977) , I think that most check valves are built into the brass fixture you screw the city water hose into. If that check valve is stuck, that would reduce or eliminate the flow of water into the trailer from the city water connection. Here is one city water connection so you'll know what it looks like. By the way, if your city water inlet has a screen like in the attached picture, is the screen clogged up?

2) Or does that mean that there is no water pressure in the system when the water pump is running? This answer does not really shed much light on the situation, as there are a whole lot of issues that can make no water supply with the pump operating.
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