Re: [RE-wrenches] TIny House Pump (Dan Fink)

[Jeff Clearwater]

Hi Windy and all

Great to see you chime in here Windy -it's been many years!

I have a customer off grid in the Caribbean with a 230V 50 hz Radian. Is there 
any equivalent to the Flowlight Booster Pump for 50hz?  Any Positive 
Displacement pressurizing pumps for 50hz?  

Thanks!

Jeff Clearwater 

Sent from my iPhone

> On Oct 30, 2016, at 4:10 PM, Windy Dankoff <windydank...@mac.com> wrote:
> 
> I agree with Dan that the Shurflo is a viable approach. I have used them many 
> times when either budget or silty water made Flowlight Booster Pump out of 
> the question. I would add a bit more advice to get the best results:
> 
> 1. Pressure tank, absolutely and it can’t be too big. Shurlo plastic tank is 
> tiny. For same $ you can get a larger steel one. Install a pressure gauge. Be 
> SURE to set the air pre-charge according to instructions after observing pump 
> pressure range.
> 2. Standard AC pressure switch can be used, and it will last forever.
> 3. For the OUTLET pipe from the Shurflo, use 1/2 or 3/4” braided vinyl tube, 
> from any hardware store - with barb fittings. Use about a 7 foot length, 
> rolled up if necessary. It will damp the pulsations very effectively. Pump 
> will last longer, and there won’t be noise through the pipes.  I use flex on 
> the intake too, to make installation and service easy. No need to make it 
> long for damping.
> 
> Windy Dankoff / founder, retired Dankoff Solar Pumps, Consultant &
> Co-author, Solar Water Pumping (Taylor & Francis) for 2017 publication
> 
> 
> 
>> On Oct 30, 2016, at 11:00 AM, re-wrenches-requ...@lists.re-wrenches.org 
>> wrote:
>> 
>> When replying, please edit your Subject line so it is more specific
>> than "Re: Contents of RE-wrenches digest..."
>> When responding to posts within the Digest, be sure to restore the Subject: 
>> line to the original, and please edit out any extraneous lines from the 
>> quoted message.
>> Today's Topics:
>> 
>>   1. Re: TIny House Pump (Dan Fink)
>>   2. Conduit in a slab (AE Solar)
>>   3. Re: Conduit in a slab (Allan Sindelar)
>>   4. Re: Conduit in a slab (AE Solar)
>> 
>> From: Dan Fink <danbo...@gmail.com>
>> Subject: Re: [RE-wrenches] TIny House Pump
>> Date: October 29, 2016 at 11:50:35 AM PDT
>> To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
>> Reply-To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
> 
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Re: [RE-wrenches] TIny House Pump (Dan Fink)

[Windy Dankoff]

I agree with Dan that the Shurflo is a viable approach. I have used them many 
times when either budget or silty water made Flowlight Booster Pump out of the 
question. I would add a bit more advice to get the best results:

1. Pressure tank, absolutely and it can’t be too big. Shurlo plastic tank is 
tiny. For same $ you can get a larger steel one. Install a pressure gauge. Be 
SURE to set the air pre-charge according to instructions after observing pump 
pressure range.
2. Standard AC pressure switch can be used, and it will last forever.
3. For the OUTLET pipe from the Shurflo, use 1/2 or 3/4” braided vinyl tube, 
from any hardware store - with barb fittings. Use about a 7 foot length, rolled 
up if necessary. It will damp the pulsations very effectively. Pump will last 
longer, and there won’t be noise through the pipes.  I use flex on the intake 
too, to make installation and service easy. No need to make it long for damping.

Windy Dankoff / founder, retired Dankoff Solar Pumps, Consultant &
Co-author, Solar Water Pumping (Taylor & Francis) for 2017 publication



> On Oct 30, 2016, at 11:00 AM, re-wrenches-requ...@lists.re-wrenches.org wrote:
> 
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of RE-wrenches digest..."
> When responding to posts within the Digest, be sure to restore the Subject: 
> line to the original, and please edit out any extraneous lines from the 
> quoted message.
> Today's Topics:
> 
>   1. Re: TIny House Pump (Dan Fink)
>   2. Conduit in a slab (AE Solar)
>   3. Re: Conduit in a slab (Allan Sindelar)
>   4. Re: Conduit in a slab (AE Solar)
> 
> From: Dan Fink <danbo...@gmail.com <mailto:danbo...@gmail.com>>
> Subject: Re: [RE-wrenches] TIny House Pump
> Date: October 29, 2016 at 11:50:35 AM PDT
> To: RE-wrenches <re-wrenches@lists.re-wrenches.org 
> <mailto:re-wrenches@lists.re-wrenches.org>>
> Reply-To: RE-wrenches <re-wrenches@lists.re-wrenches.org 
> <mailto:re-wrenches@lists.re-wrenches.org>>
> 

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Re: [RE-wrenches] TIny House Pump

[Dan Fink]

I have had very few reliability issues with the Shurflo 2088 series, and
have a dozen of them in the field for clients in 12V, 24V and 120VAC. My
house is full-time, as is my guest cabin, both have 2, one 12V for house
pressure and one 120VAC underground for filling the cisterns from springs.

The diaphragm pump head is easy to rebuild or replace, as is the pressure
switch. I've only had to do that once at my house, after 15 years of
service.

I recommend the heat sink version at 12V, that can be a failure point if
run time is extended. Other failure point - lightning with the underground
spring pumps.

ALWAYS use a pressure tank, even if it's just the little Shurflo one,
otherwise they surge and pulse, which will reduce motor lifetime
drastically.

Dan Fink
Adjunct Professor of Solar Energy Technology, Ecotech Institute
IREC Certified Instructor™ for:
~ PV Installation Professional
~ Small Wind Installer
Executive Director, Buckville Energy
NABCEP Registered Continuing Education Providers™
970.672.4342



On Fri, Oct 28, 2016 at 1:13 PM, Ray Walters  wrote:

> Greetings Esteemed Wrenches:
>
> We have a tiny house project, and need to supply the pressure pump. My go
> to pump has been the Grundfos MQ series of constant pressure pumps.  They
> have no start up surge, and don't require an external pressure switch or
> pressure tank.  For small part time cabins, we've used the Shurflo or
> Aquatec diapraghm pumps.
> In this case, I fee that the Grundfos is overkill at 10 GPM, and that the
> RV pumps won't last very long in full time use.  Any other choices out
> there I should be looking at?
> I'm thinking 3 GPM max will be fine, but I would like something more
> reliable.  The pump would be preferred to be 120 vac, but I might consider
> a 24 vdc unit if it otherwise fits the bill.
>
> As always, thanks in advance for all your comments and suggestions.
>
> --
> R.Ray Walters
> CTO, Solarray, Inc
> Nabcep Certified PV Installer,
> Licensed Master Electrician
> Solar Design Engineer
> 303 505-8760
>
>
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Re: [RE-wrenches] TIny House Pump

[Chris Mason]

Boats have small pressure switched potable water pumps running on DC. The
pumps from manufacturers like Jabsco last for a long time and can be
rebuilt.

https://www.amazon.com/Jabsco-31620-0092-Marine-Pressure-Outlets/dp/B000O8B4CG/ref=sr_1_10?s=boating-water-sports=UTF8=1477760477=1-10

On Fri, Oct 28, 2016 at 3:13 PM, Ray Walters  wrote:

> Greetings Esteemed Wrenches:
>
> We have a tiny house project, and need to supply the pressure pump. My go
> to pump has been the Grundfos MQ series of constant pressure pumps.  They
> have no start up surge, and don't require an external pressure switch or
> pressure tank.  For small part time cabins, we've used the Shurflo or
> Aquatec diapraghm pumps.
> In this case, I fee that the Grundfos is overkill at 10 GPM, and that the
> RV pumps won't last very long in full time use.  Any other choices out
> there I should be looking at?
> I'm thinking 3 GPM max will be fine, but I would like something more
> reliable.  The pump would be preferred to be 120 vac, but I might consider
> a 24 vdc unit if it otherwise fits the bill.
>
> As always, thanks in advance for all your comments and suggestions.
>
> --
> R.Ray Walters
> CTO, Solarray, Inc
> Nabcep Certified PV Installer,
> Licensed Master Electrician
> Solar Design Engineer
> 303 505-8760
>
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com 
264.235.5670
869.662.5670
Skype: netconcepts
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Re: [RE-wrenches] TIny House Pump

[Ray Walters]

Yes,  I've definitely used the Dankoff Flolight before.  I've seen them 
last over 15 years.  Cost is higher than the Grundfos though.
I'm dreaming of something in the $200 - $300 range.  Basically a really 
beefed up Shurflo, or dumbed down Grundfos MQ.


R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760

On 10/28/2016 2:06 PM, jay wrote:

You could look at the rotary vane pump ( dankoff for example).  They come in 
24v, quiet, require extremely good filtration, much smaller than the MQ but 
you’ll need a small pressure tank.

jay

peltz power

On Oct 28, 2016, at 1:13 PM, Ray Walters  wrote:

Greetings Esteemed Wrenches:

We have a tiny house project, and need to supply the pressure pump. My go to 
pump has been the Grundfos MQ series of constant pressure pumps.  They have no 
start up surge, and don't require an external pressure switch or pressure tank. 
 For small part time cabins, we've used the Shurflo or Aquatec diapraghm pumps.
In this case, I fee that the Grundfos is overkill at 10 GPM, and that the RV 
pumps won't last very long in full time use.  Any other choices out there I 
should be looking at?
I'm thinking 3 GPM max will be fine, but I would like something more reliable.  
The pump would be preferred to be 120 vac, but I might consider a 24 vdc unit 
if it otherwise fits the bill.

As always, thanks in advance for all your comments and suggestions.

--
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760

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Re: [RE-wrenches] TIny House Pump

[jay]

You could look at the rotary vane pump ( dankoff for example).  They come in 
24v, quiet, require extremely good filtration, much smaller than the MQ but 
you’ll need a small pressure tank.

jay

peltz power
> On Oct 28, 2016, at 1:13 PM, Ray Walters  wrote:
> 
> Greetings Esteemed Wrenches:
> 
> We have a tiny house project, and need to supply the pressure pump. My go to 
> pump has been the Grundfos MQ series of constant pressure pumps.  They have 
> no start up surge, and don't require an external pressure switch or pressure 
> tank.  For small part time cabins, we've used the Shurflo or Aquatec 
> diapraghm pumps.
> In this case, I fee that the Grundfos is overkill at 10 GPM, and that the RV 
> pumps won't last very long in full time use.  Any other choices out there I 
> should be looking at?
> I'm thinking 3 GPM max will be fine, but I would like something more 
> reliable.  The pump would be preferred to be 120 vac, but I might consider a 
> 24 vdc unit if it otherwise fits the bill.
> 
> As always, thanks in advance for all your comments and suggestions.
> 
> -- 
> R.Ray Walters
> CTO, Solarray, Inc
> Nabcep Certified PV Installer,
> Licensed Master Electrician
> Solar Design Engineer
> 303 505-8760
> 
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[RE-wrenches] TIny House Pump

[Ray Walters]

Greetings Esteemed Wrenches:

We have a tiny house project, and need to supply the pressure pump. My 
go to pump has been the Grundfos MQ series of constant pressure pumps.  
They have no start up surge, and don't require an external pressure 
switch or pressure tank.  For small part time cabins, we've used the 
Shurflo or Aquatec diapraghm pumps.
In this case, I fee that the Grundfos is overkill at 10 GPM, and that 
the RV pumps won't last very long in full time use.  Any other choices 
out there I should be looking at?
I'm thinking 3 GPM max will be fine, but I would like something more 
reliable.  The pump would be preferred to be 120 vac, but I might 
consider a 24 vdc unit if it otherwise fits the bill.


As always, thanks in advance for all your comments and suggestions.

--
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760

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