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431 AquaHot pumps
#1

For anyone with the 431 model AquaHot, there are three zone pumps.  AquaHot charges over a $1,000 each.  They are a March pump

Part #809 BR 12vdc 0809-0100-0200 PLX-809-200

March Pump 809 BR 12vdc 0809-0100-0200 PLX-809-200 | eBay

Steve Bare
1999 Newell 2 slide #531
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#2

When you install one, make sure you prime it, they are not self-priming.

It also has an arrow for the flow.

Steve Magown
Calhoun, LA
2001 Prevost H3 Vantare
formerly Newell #458
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#3

Two of the three are leaking so I'm replacing them all. Any tips...................

Steve Bare
1999 Newell 2 slide #531
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#4

I remember Rudy saying “apply a small air pressure to the fill neck which forces fluid through the pumps”.  I have not needed to do that yet!

Gordon Jones
2000-45'-2slide-#567
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#5

I use a radiator pressure tester to put 15 psi in the coolant tank at the radiator filler neck. Make sure the coolant tank is lipping full. Turn the pump(s) ON and they will prime right away.

Rudy Legett
2003 Foretravel U320 4010
ISM11 450 hp Allison 4000R
Factory Authorized Aqua Hot Repair Center
Southeast Texas Area
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