--- Russell Duffy <13brv3@bellsouth.net> wrote:
> Greetings,
>  
> Since I'm now planning to use two evap cores
> (ordered them today) in the
> cheeks, and both DC EWP's, I'm trying to figure out
> the best way to plumb
> them.  First, this does mean that I'll get rid of
> the mechanical pump, and
> probably the pump housing as well.  In fact, I
> ordered one of the Meziere
> adapters for the block to make the plumbing easier.
>
>  
> The adapter block has one large threaded hole for
> water out to the
> radiators, and two smaller threaded holes for water
> in.  I don't really know
> the size of the threaded holes yet, but I'm hoping
> they're 3/4" NPT for the
> smaller ones, and 1" NPT for the larger.   I'm
> planning to order two one way
> valves from McMaster Carr, as soon as I verify the
> size of the holes.  
>  
> Here's the current (never final) plan.  The large
> outlet from the Meziere
> adapter will go to a Y, then to the top of each
> core.  The bottom of the
> cores (other tank of course) will go to the pumps.
> The outlet of the pumps
> will go back to the one way valves, which will be
> screwed into the two inlet
> holes in the Meziere adapter.  
>  
> Here's the question of the day.  I could either run
> each evap core to a
> single pump, then to the engine, or I could combine
> the outlets of the
> cores, and run them to both pumps.  One way, a
> single pump will only flow
> through one core, where the other way, a single pump
> will flow through both.
> The second pump either adds a core to the circuit,
> or doubles the flow to
> both cores.  One core, at RV cruise speed is
> probably all I need, and it may
> be all I ever need in the winter.   Does anyone have
> a feel for which would
> be the better plumbing choice?  
>  
> Thanks,
> Rusty (hoping to "bring good things to light" in the
> near future)
>


Rusty Those holes are threaded for AN 12 and AN 16
Meziere also has the fittings for them if you want
                        John


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