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Old 01-25-2013, 07:15 PM   #11
Bobby_M
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I guess I'm not following. Mash is recirculationg through the HEX. Rest and ramp to mashout is done and now you want to start sparging right? The new input of this pump should be the drain from the HLT so that it goes through the HEX to flush the wort (and clean the HEX) and the output is already heading to the top of the grainbed anyway. IOW, no reason to bypass the hex.

Now, maybe you plan to batch sparge and the actual first step after the rest is to use the pump to drain the tun completely. Even in that case, you would actually be better off diverting the mash runoff via a 3-way valve right after the pump. I don't know, hard lines suck for these reasons. If you really want to control everything with valves, a Tee with two separate valves is cheaper than a 3 way but the three possible states gets confusing.

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Old 01-25-2013, 07:20 PM   #12
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Quote:
Originally Posted by Bobby_M View Post
I guess I'm not following. Mash is recirculationg through the HEX. Rest and ramp to mashout is done and now you want to start sparging right? The new input of this pump should be the drain from the HLT so that it goes through the HEX to flush the wort (and clean the HEX) and the output is already heading to the top of the grainbed anyway. IOW, no reason to bypass the hex.

Now, maybe you plan to batch sparge and the actual first step after the rest is to use the pump to drain the tun completely. Even in that case, you would actually be better off diverting the mash runoff via a 3-way valve right after the pump. I don't know, hard lines suck for these reasons. If you really want to control everything with valves, a Tee with two separate valves is cheaper than a 3 way but the three possible states gets confusing.
Maybe you're right, but isn't there a scenario where I'll want to recirc/vorlauf without adding heat? Maybe I haven't contemplated that angle and there's no reason...but I do batch sparge, and I do like to vorlauf/recirc for 10-15 minutes before draining the tun in either step.
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Old 01-25-2013, 11:30 PM   #13
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Assuming you regulate the mash temp as a function of the HLT water temp, you're never really adding heat other than that required to hold mash temp. I'm sure someone can come up with a reason to bypass, but I don't know what that would be.

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