Anvil pump (or another pump) controlled by a Speed Adjuster

[Fidelity101]

https://www.amazon.com/iPower-GLFANXCONTROLMAX-Variable-Adjuster-Controls/dp/B07P6NVNNT
I'm curious if anyone has used something like the above to control the flow on a pump. It seems like a better option that restricting the output.

 

[BrewdyQuah]

Not all pumps are designed to work with external voltage regulation, so you may actually do more damage to the motor by going this route.

Most brewing pumps are designed to handle output restriction as the method to control flow without damaging the motor. The coupling uses a mechanical bypass (via the magnet) to allows this.

 

[Fidelity101]

Thank you. I figured there had to be a reason why people aren't using potentiometers with these pumps.

 

[Vale71]

Not all pumps are designed to work with external voltage regulation, so you may actually do more damage to the motor by going this route.

Most brewing pumps are designed to handle output restriction as the method to control flow without damaging the motor. The coupling uses a mechanical bypass (via the magnet) to allows this.

The information above is just completely wrong. A magentic coupling is not a form of bypass but it simply avoids the need to have an axle pierce the wet chamber with all the associated possible leakage issues. No pump is actually designed to be restricted either in the input or in the output.

All pumps, regardless of whether magnetically coupled or not, should be flow-adjusted by adjusting the RPM. Pumps with AC motors require a variable frequency regulator like the one linked to by the OP, pumps with DC motors can be regulated either via voltage regulators or via PWM controllers. It's impossible to damage an electric motor by down-regulating its performance. Worst that can happen is that it stalls and the pump stops pumping.

 

[Bobby_M]

While a pump is not designed to be flow restricted as a feature, there is no problem doing so because they are rated for a certain amount of head. Closing down a valve on the output is just simulating a higher lift. As far as I can tell, the product the OP linked to is a TRIAC that cuts off portions of the waveform rather than changing the frequency. That kind of motor control is really only appropriate for fan motors. An actual single phase VFD is expensive.
https://www.ato.com/1-2hp-vfd-single-phase-input-outputhttps://www.wolfautomation.com/ac-drive-5hp-115v-4a-single-phase-input-1/

 

[Bassman2003]

Sort of an old thread, but is there is solid yet inexpensive way to throttle the output of the Anvil pump? I think it is a great little pump but it spends the entire time that I using it clamped to hardly any flow. Meanwhile the thing is whirring away at 100%. Seems like it would be better to be able to slow it down and have some measurement on a dial to know what rate(s) you recirculate at.

Thanks for your input.