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Old 04-02-2013, 08:18 PM   #1
bbarr21
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Sep 2010
Fuquay-Varina, NC
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Will using a smaller diameter hose from the output of my march pump to the whirlpool valve increase the pressure?

I'm looking to improve my whirl pooling power
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Old 04-04-2013, 03:14 PM   #2
WalterAtMarchPump
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It will...but keep in mind the 809-HS will only generate a max pressure of 5psi when fully closed off....
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Old 04-04-2013, 03:44 PM   #3
maida7
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Asheville, NC
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I use 1/2" hose but have the end of the copper tube pinched a bit where is shoots back into the pot. Pinching the end makes it shoot a bit harder (like putting your thumb over the end of the garden hose) and makes the whirlpool stronger. Make sense?

 
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Old 04-04-2013, 04:26 PM   #4
tophmck
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Madison, WI
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Does this really help? I see how the restriction would increase the speed of the water coming out of your whirlpool arm, but at the cost of reducing the flow rate. I would have thought you'd get the best whirlpool by maximizing the amount of water going through the whirlpool arm, not it's speed.

I guess I'll have to play around with this...

 
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Old 04-04-2013, 04:49 PM   #5
itsme6582
 
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Quote:
Originally Posted by tophmck View Post
I would have thought you'd get the best whirlpool by maximizing the amount of water going through the whirlpool arm, not it's speed.
It's sort of a momentum thing. Think about a really big tube. If you have 6gpm flowing from a 6" tube, you'll hardly have any velocity. The wort won't whirlpool faster than the velocity of the wort exiting the tube.

+1 on reducing the diameter only at the end...
I use a stainless hose barb. I think it's 1/4." If you go too small you could blow your silicone tubing.

 
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Old 04-04-2013, 04:59 PM   #6
tophmck
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Quote:
Originally Posted by itsme6582 View Post
It's sort of a momentum thing. Think about a really big tube. If you have 6gpm flowing from a 6" tube, you'll hardly have any velocity. The wort won't whirlpool faster than the velocity of the wort exiting the tube.
That makes a lot of sense. Thanks! I'll give this a try.

 
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