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Foretravel Motorhome Forums => Foretravel Discussions => Topic started by: fkjohns6083 on July 10, 2014, 08:24:49 pm

Title: Fresh water design pressure.
Post by: fkjohns6083 on July 10, 2014, 08:24:49 pm
Is there a method of determining what the design pressure of the fresh water sys. is??  I want to replace the old
shurflo pump with a newer one, but I can't find what the max. pressure should be.  The newest one has a 55 psi cut off press. and I think that the old one is only 40 or 45 psi.  How to verify this??  Thanks and have a great day  ----  Fritz
Title: Re: Fresh water design pressure.
Post by: Roger & Susan in Home2 on July 10, 2014, 08:49:05 pm
PEX tubing is pressure tested at 100 psi or 1.5x normal operating pressure. So normal operating pressure is about 60 psi or a bit more.  I would think that 55 psi would be OK.  You could always put a pressure regulator downstream of the pump.  I use a 40 psi regulator when connected to city water.

Roger
Title: Re: Fresh water design pressure.
Post by: Roland Begin on July 11, 2014, 09:10:23 am
I installed a 65 max PSI water pump three years ago. No problems. Needed the higher pressure for the RO system.

Roland
Title: Re: Fresh water design pressure.
Post by: fkjohns6083 on July 11, 2014, 11:01:22 am
Thanks guys,  I'm going with the 55psi pump.  Have a great day  ----  Fritz
Title: Re: Fresh water design pressure.
Post by: Dan Stansel on July 13, 2014, 02:07:46 pm
Has any one got a REMCO  55AQUAJET-RV 60 psi- 5.3 gpm,//  water pump. Looking at replacing my old water pump with this one??????  Any other pump suggestions???
Title: Re: Fresh water design pressure.
Post by: Don & Tys on July 13, 2014, 02:32:46 pm
Dan I think the pump in the link I posted in another thread (quoted below) is the same pun you are asking about. If so, I put one in a year or so ago and have been happy with it so far. A little noisier than I would like, but that might be my fault... I made quarter-twenty mounting studs and the instructions said to use number 10 screws to mount (read them afterwards :o ) so  that the pump would be free to move on its rubber grommets. I don't know how much difference that made... one of these days if I hear someone elses installation of this pump, I will redo my mount if their's is significantly quieter.
Don
Quote from: acousticart –
I replaced our FlowJet with an Aquajet 55 ARV;
http://www.freshwatersystems.com/p-1070-remco-aquajet-arv-5503-av15-b636-rv-pump-53-gpm-12vdc.aspx?utm_source=Googlebase&utm_medium=Feed&utm_campaign=Product&utm_term=5503-AV15-B636&gclid=CNTQ7PzOvb8CFQiDfgodFokAjQ (http://www.freshwatersystems.com/p-1070-remco-aquajet-arv-5503-av15-b636-rv-pump-53-gpm-12vdc.aspx?utm_source=Googlebase&utm_medium=Feed&utm_campaign=Product&utm_term=5503-AV15-B636&gclid=CNTQ7PzOvb8CFQiDfgodFokAjQ)
We have been happy with it so far...
Don
Quote from: Dan J. Stansel –
Has any one got a REMCO  55AQUAJET-RV 60 psi- 5.3 gpm,//  water pump. Looking at replacing my old water pump with this one??????  Any other pump suggestions???
Title: Re: Fresh water design pressure.
Post by: Dan Stansel on July 13, 2014, 02:39:08 pm
Don: After your comments about noisy and reviews say same thing I may go with the Shurflo 4048
153 E75 High Flow. About same price. 
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