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Old 09-10-2017, 06:36 PM   #1
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Safe water pressure on 2017 Bay Star

I just purchased an adjustable water regulator as the non-adjustable one I have seems to really dial the pressure down.

I searched the site and the general rule seems that the pressure should be kept around 55 to be safe.

Is this correct for Newmar coaches?

Thanks.
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Old 09-10-2017, 06:47 PM   #2
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No - you can go up to 85psi safely- they pressure test them at the Newmar factory at 100 psi as they build them. The problem with most pressure regulators is they have only a 5/16"-3/8" diameter orifice. This greatly restricts the flow rate- GPM.

I made up a short piece -6"- of hose with a hose female fitting on one end and a glycerin filled 125 psi pressure gauge on the other end. I measure the water pressure before connecting my water supply hose at all campsites.

Happy Trails
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Old 09-10-2017, 06:57 PM   #3
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45 psi is a good safe number. Too many people think a good shower is due to higher pressure but it is not. Volume make a shower feel better. The low cost non-adjustable regulators are good for about 2 gpm when new but quickly drop to 1 gpm. A show needs about 2.5 gpm for a food feel.

A Watts type pressure regulator provides about 4-5 gpm.
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Old 09-10-2017, 07:13 PM   #4
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45-55 imho.
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Old 09-10-2017, 07:18 PM   #5
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When having shower issues in my CS Newmar told me 60psi would be ok. I ended up changing the shower head to one that draws air in to increase pressure and that really helped.
https://www.ecocamel-showerheads.com/
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Old 09-11-2017, 12:27 AM   #6
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Safe water pressure on 2017 Bay Star

Most residential systems operate at about 60 Lbs. That's where I set my DS. Good flow rate and no problemsko
Your internal pump runs at about 40-45 Lbs. I find that to be annoyingly low for sink and toilet use. It is satisfactory in the shower IF you use an Oxygenics (which I do) or other showerhead optimized for low pressure use.
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