Derick,
Are you using 1" or 3/4" fittings/lines?
Tom
----- Original Message -----
From: "Derick Giorchino" <[EMAIL PROTECTED]>
To: <biofuel@sustainablelists.org>
Sent: Thursday, July 20, 2006 7:03 PM
Subject: Re: [Biofuel] Pump choice
> No problem I have been making 120 liter batches for 2 years with not one
> leek or problem. Note I drain the pump after use.
> Good luck.
> Derick
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Joe Street
> Sent: Thursday, July 20, 2006 11:28 AM
> To: biofuel@sustainablelists.org
> Subject: Re: [Biofuel] Pump choice
>
> Hi Mike;
>
> I can only speak from my own experience and I haven't used that
> combination but I have read a fer anecdotes. Sorry but I think you
> should not get too excited about 40 gallons. You may find that you can
> only fill that tank to the 25 gallon point with that size plumbing and
> pump. You would not be the first one to discover this! There is no
> fine print telling you this by the people selling kits with a 40 gallon
> tank and clear pump. But then again if you don't do quality tests you
> would never know.....
>
> Joe
>
> Mike Weaver wrote:
>
>> Any advice on 40 gallon batches and a clearwater pump? We haven't used
>> this latest reactor yet - will it have enought power to
>> mix 40 gallons?
>>
>> -Mike
>>
>> Joe Street wrote:
>>
>>
>>>Hey Tom;
>>>
>>>My guess on this is it is not so much the pump but the size of the
>>>plumbing. I noticed that one particular pump with the same size motor
>>>and impeller was offered with 1" or 3/4" inlet and the throughput was
>>>almost the same as a smaller pump with standard 3/4" inlet unless you
>>>ordered it with the 1"
>>>I then took a look at a whoile bunch of pump curves and what you find is
>>>that you won't get beyond about 10-15 GPM with any size motor or pump
>>>unless you go larger than 3/4" on the pump inlet. The 90 litre wall I
>>>think is related to the 3/4" tank connections on the hot water tanks we
>>>all like using not the pump per se but it amounts to the same difference
>>>in the end.
>>>
>>>I believe it is a waste of time and money buying a larger tank than
>>>about 100 litres since as most people find out you can't get a good
>>>reaction on about more than 90 litres of oil anyways.
>>>
>>>Joe
>>>
>>>
>>>
>>>Thomas Kelly wrote:
>>>
>>>
>>>
>>>
>>>>Charles,
>>>> The impeller in the clearwater pump is metal. Plastic impellers
> will
>>>>eventually fail in pumps used to agitate the reaction.
>>>> My experience w. the clearwater pump is that it will handle up to
>>>> 90L
>
>>>>(~ 24 gal) batches. Above that, even after three hours reaction time, I
> have
>>>>gotten incomplete reactions.
>>>> Congratulations on your success scaling up.
>>>>
>>>> Tom
>>>>----- Original Message -----
>>>>From: "Charles List" <[EMAIL PROTECTED]>
>>>>To: <Biofuel@sustainablelists.org>
>>>>Sent: Wednesday, July 19, 2006 7:43 PM
>>>>Subject: [Biofuel] Pump choice
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>>Hi All
>>>>>
>>>>>Thanks to all who have advised me this last few months, I am now a
>>>>>biofueller! 105l batches, good product. Unfortunately, after 10 good
>>>>>batches, my pump has started spraying out of the back of the impeller
>>>>>housing. So I took it apart and the impeller has broken up and the
>>>>>housing has been eaten through at the back, around the mechanical
>>>>>seal. It was 30 years old or so, free and a plastic spa pump, so I'm
>>>>>not too distressed, but I obviously don't want it happening again.
>>>>>
>>>>>I notice that the clearwater pump used by JtF is made of cast iron,
>>>>>so should my next pump be made of metal? Also, is the impeller in the
>>>>>clearwater pump plastic? As I know you can get some with stainless
>>>>>steel blades, I wonder my impeller break-up was due to age or
>>>>>chemicals.
>>>>>
>>>>>Thanks
>>>>>
>>>>>Charles List
>>>>>--
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>>>>
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