RV water pump

[luvrbus]

Look at the way Shurflo sets up a 2 pump system model 4558-153-E75 it looks like 2 pumps in tandem but 10gpm @ 55psi they are pricey if you buy from a marine store

[Seangie]

Dave,
http://www.remcoindustries.com/RV/product.php?f=5500.php&c=11
We have a two year older model of this one in our bus.  Best pump out there...done

We have 3/4" pex coming in and it pushes through 2 house sized filters and is often more pressure then most parks we are at.  Its about 45-60psi at the faucet.

Its variable speed and doesn't hammer but I would still suggest an accumulator.  It is not much louder than a cheap pump but should take noise into consideration when mounting.  Mounting an old mouse pad under the feet helps to absorb vibrations.

-Sean

Wandering the country in a 1984 Eagle 10S.  
www.herdofturtles.org

[daveola]

Best pump out there...done

Looks great, but it's 12V.  I have 110VAC and 24VDC easy throughout the bus, but not 12V.

[daveola]

Look at the way Shurflo sets up a 2 pump system .. it looks like 2 pumps in tandem but 10gpm @ 55psi

Sure are pricey, but that's some amazing stats.

I wonder if they need different sensors, I've wondered if two pumps in parallel would both merely try to pressurize the line to get 4.5gpm flow thereby both working less but not improving flow (though saving you if one breaks).

[digesterman]

I have three of these tandem setups and they work very well. In the Prevost it is the same as being hooked up to city water and you can not hear them anyway in the coach. I recommend the shurflos highly


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[oltrunt]

I've always had Surflow in the past but at the recommendation of the mfg of my instant hot water heater I now have two Flo Jet pumps rated at 2.9 gpm ea @50 psi. One for cold and one for hot.  Though they say they run at 4.4 amps ea, I've not checked.  What I do know is that they were reasonably priced and solved the water mixer problem in the shower--no more heater shut off mid shower.  Burrrrrrrrrr.  At nearly 6 gpm possible I'll have to be careful.  I can only carry 60 gal fresh water in my tiny bus.  Jack

[digesterman]

Jack did you install the hot water heater pump just right before going into the hot water tank?


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[oltrunt]

Hey Lee.  Yes, I did install my pump within inches of the on demand water heater.  Actually both pumps are housed within the same steel box that contains the heater.  My thought was that if (when) the pumps leaked the water would run out the bottom air intake of the box and not ruin my floor.  What is your take?  Jack

[digesterman]

Good idea think I will do the same, I like the idea of a separate pump for the hot side


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[oltrunt]

Lee, I forgot to mention that I also plumbed for the hot water pump to recirculate hot water back to the fresh water tank from the furthermost point of the circuit via a solenoid valve.  If I want only limited hot water flow, I leave the bypass solenoid valve open.  If I want full hot water flow I switch the solenoid valve off and get full pump pressure.  This both gives me instant hot water at the spigot as well as eliminating running cold (hot) water down the drain.  My instant water heater is sensitive to both pressure and flow rate.  The dedicated pump and the recirculating solenoid valve solved this problem.  I use a three way switch, (like a hallway switch) one in the bath and one in the kitchen to manage the solenoid valve. Jack