building your own cooler

[df5152]

Does anyone have any idea what the factory pumps put out in terms of psi and gph?

[Fishy Jim]

125gph procon models, and set to around 50psi. I had my WP20 running at 75psi (off a 150gph pump) when I first connected it, and nothing leaked or popped off, but I backed it down to 50 via the internal adjustment screw on the pump. No need to stress the hoses more than necessary.

[imported_frank865]

125gph procon models, and set to around 50psi. I had my WP20 running at 75psi (off a 150gph pump) when I first connected it, and nothing leaked or popped off, but I backed it down to 50 via the internal adjustment screw on the pump. No need to stress the hoses more than necessary.
I think the pumps are capable of 125 gph @ max output, but wouldn't the approximately one quart per minute (which is what I've been seeing) put the actual rate @ about 15 - 20 gph? :confused:

[CarmenElectrode]

If you are using a Procon pump, there are a variety of models out there. Check out the procon website:
http://www.proconpumps.com
They have the specs on the various models.

[Sundown]

According to my research 45-55 psi and about 1-1.5 QtPM is about what is needed. Easy way to test is to get a bucket, supply the pump input side with a tube that is in the bucket filled with water, connect a tube to the output side of the pump and slip the end of the torch input in the tube, turn on the pump for one minute and measure the amount that gets pumped through. Adjust the pump bypass until you get about a Qt in one minute and you are good to go. If you have a pump that is not adjustable then you will need to shorten the bypass spring (assuming the flow rate is greater than 1-1.5 Qt per min.) a little bit at a time until you get the flow rate that is required, or get the proper length spring from Procon.

[Fishy Jim]

Grainger has their Dayton brand carbonator pump motors on sale right now. 1/3hp, in either 120 or 230v, with 1 year exchange warranty for $52. My motor was only 115v and I needed 230, so I opened it up to see if there was a way to rewire it, and found a bee hive, a dead bee, and a whole bunch of green wire. It's in the trash right now. :D New pump will be ready at will call by 1pm.

There's also a guy selling rebuilt procon 125's for 33 bucks plus 10 for shipping on ebay.