de-stratification pump, what do I need & where do I get it

Submitted by DaveTaylor on Mon, 25/05/2015 - 10:14

Hi, just installing Robins Mk2 and would like to heat all of the water in my HW cylinder

Longer Stat or de-stratification pump.

I like the pump idea so I can control when it is on, I assuming it does not need to be of any size, so what have you all been using?

Regards Dave

Re: de-stratification pump, what do I need & where do I get it

Submitted by Robert Wall on Tue, 26/05/2015 - 00:11.

Have you seen http://openenergymonitor.org/emon/node/4923#comment-20598 ?

Re: de-stratification pump, what do I need & where do I get it

Submitted by DaveTaylor on Tue, 26/05/2015 - 16:45.

Hi, thanks for the reply.

I have search through various threads before posting but cant find a link or reference to a particular type of pump.

Have seen this http://www.ebay.co.uk/itm/5M-16-4FT-Head-24V-100-C-Hot-Water-Solar-Circulation-Pump-Food-Grade-Silent-TE92-/171552161740?pt=LH_DefaultDomain_3&hash=item27f14e3fcc

But have also read that the pump needs to be made of Bronze, which are expensive.

So wondered what type of pump people have used?

Regards, Dave

Re: de-stratification pump, what do I need & where do I get it

Submitted by Robert Wall on Tue, 26/05/2015 - 23:12.

That was the only comment I recalled that had anything specific about a pump. I don't see why it needs to be bronze, as long as it's suitable for potable water and the temperature.

Re: de-stratification pump, what do I need & where do I get it

Submitted by PeterC on Sun, 20/03/2016 - 20:59.

Chaps,

Here is the pump I use. My 2 mates also destratify and use the same.

It is:

1 Effective. I was amased it did the job so well. 170 litres is a lot of water. I use it at 12V but run it using PWM at 150/255 so around 7V DC. I destrattifies to a temp difference top to bottom of 12C in about 10 mins

2 Cheap and getting cheaper. There are many suppliers and various forms, but the motor and internals appear the same

3 Proven after 2 years running

4 Quiet

BUT it is plastic, a hard plastic, but plastic nonetheless. I did know the name of it begings with "F" but forgotten now. So I worry about it fracturing and then the return-from-holiday-flood. If it had a stainless steel or bronze / brass body it would be perfect. Cars now use 12V DC external pumps for engine cooling so these would be better, but £more and likely far too powerfull for this job

http://www.ebay.co.uk/itm/like/131359822766?limghlpsr=true&hlpv=2&ops=tr...

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