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If it's a centrifugal type pump any restriction will reduce the load on the motor. The speed of rotation increases and power consumption goes down until you get cavitation.
Some restriction is a good thing. IME the sweet spot is usually between 60- 90% of rated flow.

FB,
I'm not sure what my mill gap is exactly, but I have opened it right up to the point where it just pops the husk open. This gap gets changed slightly sometimes for different grain types. After trying several different gap settings I've found this to be the best gap setting for flow and efficiency.
It looks something like this most of the time. (3:2 Wheatils in this shot).
[ATTACH]71223[/ATTACH]
Your mash seam gas problem sounds pretty interesting. I'm guessing there must be a pocket of air getting trapped under the false bottom when you fill the MT.
Do you add water to your grist, or the other way around?

<blockquote data-quote="Beerisyummy" data-source="post: 1175099" data-attributes="member: 20674">If it&#039;s a centrifugal type pump any restriction will reduce the load on the motor. The speed of rotation increases and power consumption goes down until you get cavitation.Some restriction is a good thing. IME the sweet spot is usually between 60- 90% of rated flow.FB,I&#039;m not sure what my mill gap is exactly, but I have opened it right up to the point where it just pops the husk open. This gap gets changed slightly sometimes for different grain types. After trying several different gap settings I&#039;ve found this to be the best gap setting for flow and efficiency.It looks something like this most of the time. (3:2 Wheat<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite7" alt=":p" title="Stick Out Tongue&nbsp; &nbsp; :p" loading="lazy" data-shortname=":p" />ils in this shot).[ATTACH]71223[/ATTACH]Your mash seam gas problem sounds pretty interesting. I&#039;m guessing there must be a pocket of air getting trapped under the false bottom when you fill the MT.Do you add water to your grist, or the other way around?</blockquote>

[QUOTE="Beerisyummy, post: 1175099, member: 20674"] If it's a centrifugal type pump any restriction will reduce the load on the motor. The speed of rotation increases and power consumption goes down until you get cavitation. Some restriction is a good thing. IME the sweet spot is usually between 60- 90% of rated flow. FB, I'm not sure what my mill gap is exactly, but I have opened it right up to the point where it just pops the husk open. This gap gets changed slightly sometimes for different grain types. After trying several different gap settings I've found this to be the best gap setting for flow and efficiency. It looks something like this most of the time. (3:2 Wheat:Pils in this shot). [ATTACH]71223.IPB[/ATTACH] Your mash seam gas problem sounds pretty interesting. I'm guessing there must be a pocket of air getting trapped under the false bottom when you fill the MT. Do you add water to your grist, or the other way around? [/QUOTE]

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