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Old 07-30-2020, 04:20 PM   #1
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Default Setting Water pressure for city water supply

I have had my '12 X214 since new and have always used one of the inline water pressure reducers that is supposed to be pre-set to "40-50" psi.

Lately, water pressure has seemed really low, so I bought a fancier one with the gauge on it and adjusting scew.

Now I'm not sure what to set it at! Nothing in any of the manuals mention what the trailer's system is rated for, but a did find a pre-delivery check sheet says it was pressure tested to 80 PSI with air.


Articles found online suggest 40 psi for "older" trailers, and 50 psi for "newer ones".

I'd like to set it for the highest safe psi. If anyone has any ideas, I'd love to hear them. TIA.
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Old 07-31-2020, 02:49 AM   #2
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If you have an expansion/accumulator tank for the house pump you don't want to set the city pressure higher than the tank manufacturer recommends.
I would say a good rule of thumb would be to test or research the house pump cut-off pressure setting and simply copy that for city pressure. That way whether you're boondocking or hooked up the pressure is the same.
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Old 07-31-2020, 09:45 AM   #3
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For what it is worth, several of the Shurflo accumulators recommend 29 PSI for the diaphragm pressure. Not sure if that corresponds to incoming water pressure from the city line, but it makes sense that it might.

I know what you are thinking -- how would I know such a seemingly random fact? It's because my accumulator started acting up after I would travel to high altitude (10,000 feet) and then back down to sea level. The accumulator pressure would vary, and so I often need to check the pressure and add air with a bike pump. Not a big deal, but just another chore to do while prepping for each camping trip.
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Old 08-01-2020, 09:11 AM   #4
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Rule of thumb is 50 psi. Not sure how having an accumulator would affect that, but my guess is it wouldn't. I would try that first and see how you like the water flow. If you think it's too low you could probably get away with tweaking it up to 55.
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Old 08-01-2020, 03:27 PM   #5
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For reference:

"The normal range of water pressure in a residential application is between 40 psi and 80 psi. There is no specific rule about how much pressure is best for your house, since everyone's needs are different. However, anything below 40 psi will likely lead to poor performance of devices that use water. Anything higher than 80 psi could lead to damage, such as blown sprinkler heads or ruptured pipes. Check your pressure regularly by attaching a pressure gauge to an outdoor faucet and turning on the water."

When working on a water plant for a manufactured home/camper park - the water pressure was set at 65 PSI.

Campgrounds with private water sources may be different.
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Old 08-09-2020, 12:26 PM   #6
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Used the new device last week. Dialed it up to 50psi and water pressure in the trailer is MUCH better.


Confident that 50 is safe for the plumbing so I'll leave it at that.
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