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On Sat, 6 Nov 2004 10:01:22 -0600
"Russell Duffy" <13brv3@bellsouth.net> wrote:
> I'm considering the Meziere WP337, or two WP116's. I have my
> evaporator cores set up for AN16 fittings. I haven't quite figured
> out whether I can get any of the Meziere pumps to use AN16 for inlet
> and outlet directly, or whether I will have to make external adaptors.
>
> Bob White
>
>
> Hi Bob,
>
> The Meziere pumps you mentioned both use interchangeable fittings, and
> you can absolutely use AN-16 directly to the pump. I consider that a
> huge benefit vs having to make your own fittings like we do for the
> Davies Craig.
>
>
> Since some of the Meziere pumps have dual outlets, and some have
> single, the options are numerous. The easiest thing to do would be to
> use their adapter plate, and one of the pumps with a dual outlet. If
> you want redundancy, you could add a second pump like the WP336 inline
> with the inlet side of the dual outlet pump. I still think the
> neatest trick would be to have one pump for each evap core, but that
> requires a one way valve of some type, and I haven't come up with a
> good one yet.
>
> If you haven't found the Meziere site yet, here's a link to their
> catalog- http://www.meziere.com/index.php?pgName=catalog
>
> I can't seem to download the 2004 catalog, but the 2003 works. You
> can also look at page 16 (remote) and page 19 (fittings) from the 2004
> catalog. Those show you the pumps, and fittings. Page 14 (import)
> shows the adapter plate that bolts to the engine. HEY, look at that!
> They now sell an adapter (WP91) that has only one inlet, and one
> outlet, rather than two and one like the WP90 they've always had.
> This is the first I've seen this. Cool!!!
>
> Cheers,
> Rusty (now thinking about dual EWP's again)
>
Thanks Rusty,
It wasn't clear (to me) from the description that I could get the AN16's
with the correct dia fittings for both input and output. The WP116 I
referenced above should have been WP136. Two 20 GPM or one 55 GPM. I
doubt the 55 GP will be achievable through the AN16 fittings.
The WP91 is super if I decide to go with a single pump. I was going to
make my own and my stuff never looks too good.
I have attached a picture of some check valves I found on the internet.
It seems like these shouldn't create too much back pressure. If I
decide on two pumps, I might try this type of check valve.
My two pump option would be to run them in parallel, one off of each
evap core. I would think that if I had a pump fail, I could reduce
power to minimum required to maintain flight without overheating. Maybe
I need a flow sensor to know that I hava a problem before overheating
occurs. Actually, it would be kind of interesting to see if one of them
could be turned off for cruise.
I though I had seen a 7 Amp rating on one of the Maziere pumps, but when
I went to look for it again, I couldn't find it.
Bob White
--
http://www.bob-white.com
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