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From: Pascal Gademer (no email)
Date: Wed Feb 13 2008 - 14:39:34 EST
one of the shurflo engineer (dont have his name handy) told me 2000hrs at
30psi, not 1500... so it seems like even shurflo isnt sure...
but note that these pumps operate a higher pressure... 50 or 60psi cut off i
think... so real world lifespan is more like 1000 hours which was my
experience.
I guesstimate average flow to be 3GPM (depending on nr of fixtures in use at
the same time). in my case, that's 80 minute per 250 gallon tank... which i
refill every 5 days. so one hour and 1/3 every five days.. 100 hours a
year ?
so in theory, the diaphragm should be good for 10 years ? something is
wrong either with my math or with the pump. I got about a year from the
first one, and again a year out of the second one.
pascal
miami,fl
70 hatteras 53MY
live helm cam @ www.sandbarhopper.com
----- Original Message -----
From: "Larry N. Brown" <>
To: "Trawlers and Trawlering" <>
Sent: Wednesday, February 13, 2008 1:43 PM
Subject: T&T: Fw: Shurflo 5.7
> Listees:
>
> You'll remember the tale of my Surflo experience. Pedro Silva from Shurflo
> advised me that he was shipping me a replacement pump for my first smoked
> one
> and a repair kit for my now leaking one. Good. Great. So I asked him what
> was
> the service life of the diaphragm. Here's his reply:
>
>
>
> Larry,
>
>
> The diaph. life expectancy varies with each application and use. Here are
> some numbers to give you an idea.
>
> Pump operating under these conditions number of hours.
> Open flow no restrictions. 3000 hours.
> 30 psi restriction. 1500hours.
>
> The recommended service, diaph. replacement is at 1200 hours or every
> year.
>
>
> Let me know if you have questions
>
>
>
> Pedro Silva
>
>
> Now, this is a lot different from how I looked at the situation in the
> beginning. If they warrant the pump for 3 years, that must indicate that
> they
> expect the diaphragm to last that long in normal service. Perhaps some of
> our
> engineering types can figure out how many hours would be accumulated for a
> fulltime liveaboard couple in one year. Not sure what a diaphragm kit
> costs
> but throwing in a diaphragm every year or so is a cheap price to pay for a
> really good pump.
>
> Regards,
>
> Larry and Teri
> M/V Cigano, 47' Prairie Sundeck Cruiser
> Lying: Covington, LA
> N 30 26.7
> W 90 07.1
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