Screen wash Mixing pump

[CMcF]

I am reverse engineering a screen wash system (our supplier has gone bust). I need to identify a mixing pump that is powered by the high pressure water supply, that draws in anti-freeze and mixes it with the output?
Any ideas?

 

[Latexman]

Some data would help. Pressure of the high pressure water, flow rate of high pressure water, flow rate of anti-freeze, outlet pressure, etc. Do you mean a pump or an eductor? It's a little unclear what's going on to me.

Good luck,
Latexman

 

[CMcF]

Hi Latexman,
The water is supplied a 3 bar, and mixed 3:1 with anti-freeze.
The fittings are 3/8 BSP.
The water drives a double piston crank, which drives the anti-freeze pump. It is not an eductor, but like an eductor has no other power supply.

 

[Latexman]

After the 3 bar water loses it's energy to the double piston crank/antifreeze pump, is it the same "exhaust water" that is mixed with the antifreeze or is there a second stream of water involved?

Good luck,
Latexman

 

[CMcF]

Yes it is. Thanks, I found the product I was looking for after 6 hours on Google.
It is a "Water Driven Proportioning Pump"
supplied by Shurflo

http://www.shurflo.com/pages/new_industrial/industrial/automotive/doc_sum/94-260-21.html

if you are interested.
Thanks for your interest.

Colin

 

[Latexman]

Very interesting! Thanks for sharing. There's a pump salesman that calls on me that only carries these esoteric, specialty, niche pumps. I would have called him.

Good luck,
Latexman