Help making a re circulation pump

[Buffers brewery]

https://www.thehomebrewforum.co.uk/threads/maintaining-mash-temps.90903/#post-971973
Look at post #6 might be of interest.

 

[Ashman]

Wow! That's plenty. Let's know if it works out.

Although the LED driver controlled the flow pretty well the controller or the pump screamed loudly (very annoying sound) and I lost some flow at maximum. Anyway,Well I was thinking I might just restrict the pipe by mechanical crimping? I’m too tight to buy a 1/2 ball valve. Planning to use the sight glass tube as the overflow drain as I hacked a connection to the tap. Also Added a slot for the solar pump mounting.

 

[Andy_K]

What’s the best power supply for a solar pump?

 

[Buffers brewery]

Depends how/if you want to control flow. I use a Guagemaster model railway controller to vary the speed of the pump. They’re a bit expensive new but you can pick them up on the bay. Others prefer to run at 12 Vdc and control flow using a tap.

 

[Andy_K]

....... Others prefer to run at 12 Vdc .......

So would that be a car battery?

 

[Buffers brewery]

So would that be a car battery?

Yes, just get the polarity the right way round. They don’t run if the polarity is reversed.

 

[crescent city Mike]

Although the LED driver controlled the flow pretty well the controller or the pump screamed loudly (very annoying sound) and I lost some flow at maximum. Anyway,Well I was thinking I might just restrict the pipe by mechanical crimping? I’m too tight to buy a 1/2 ball valve. Planning to use the sight glass tube as the overflow drain as I hacked a connection to the tap. Also Added a slot for the solar pump mounting.

A friend wrote an article about this very problem in our local newsletter. You can read it here in this link : The Pump* – DIY Build