Pump bypass loop help

[Coffeeuk]

Hi,

I'm looking for advise restricting the flow through my pump when recirculating through the rims. The pump is a Stuart turner RG550-2 Which is not magnetically coupled and needs a bypass loop to restrict the flow.

Looking at the picture below, is this the right setup on the left hand side for a bypass loop( ignore the right hand side )

Thanks

Mick

[LeeH]

Ever thought about just slowing it down with a controller?

[Coffeeuk]

Ever thought about just slowing it down with a controller?

Apparently it's not a good idea, but I'm happy to be convinced otherwise

[LeeH]

A bad idea in what respect?

[Fastline]

Maybe best to put a tee in output of pump
One leg of this you use as output
The other leg put a tap on and return its output to the tank you are pumping from

This would allow pump to output full power unrestricted but would bleed off some of the pressure

[Coffeeuk]

I'm lead to believe the pump needs to spin at full speed in order for the cooling fan to do its job properly, but like I say, I'm happy to be convinced otherwise.

[LeeH]

I'm lead to believe the pump needs to spin at full speed in order for the cooling fan to do its job properly, but like I say, I'm happy to be convinced otherwise.

That's true, but only if they're under large loads at greatly reduced speeds.

I'll trial my chugger on Friday for 1 hour at half speed, take some temps and report back. I need to confirm this for myself as I'm building a panel at the moment.

[Coffeeuk]

OK cheers

[LeeH]

Didn't get time to do this but I'll get around to it this week.

[Coffeeuk]

No worries.