March pump question

[missing link]

For those of you that use a pump, how do you control the flow? Do you use the valves to slow down the flow or do you adjust the amount of power going to the pump?

THanks

Linc

 

[Ryan_PA]

You really only want to control the flow with a valve on teh outlet side of the pump. The motor is designed to run at the full voltage, anything less will compromise the life of the pump.

 

[Jester369]

+1 Just put a ball valve on the outflow and provide the full juice to the motor.

 

[Lil' Sparky]

+1+1

.....

 

[korndog]

Yep, this from Morebeer.

The magnetic drive acts as a clutch allowing the user to put backpressure on the pump to slow down flow.

 

[missing link]

Yep, this from Morebeer.

The magnetic drive acts as a clutch allowing the user to put backpressure on the pump to slow down flow.

That makes sense, the magnetic motor will turn regardless of the pump blades. I was imagining the impeller cavitating if the flow was to slow.

Thanks

 

[mr x]

Pumps generally don't cavitate unless you restrict the suction too hard relative to the output.

 

[Bsquared]

I got fancy and put a diverter on my pump.

 

[korndog]

I got fancy and put a diverter on my pump. View attachment 4070

So on the uphill leg, gravity forces wort (water) down and across the bypass, regulated by the ball valve? That's pretty cool if I am reading it right.

 

[CodeRage]

Could always use a small VFD a bit overkill for the application though

Nm... forgot about the 110. Those are a bit harder to find.

 

[Bsquared]

So on the uphill leg, gravity forces wort (water) down and across the bypass, regulated by the ball valve? That's pretty cool if I am reading it right.

Zackly, It works well, but I bet a ball valve on the out let would work just as well. But I have fun soldering copper, reminds me of playing with Legos.