Rainbow320 low flow

May 21, 2014
18
Massachusetts
Hi
Anyone have any thoughts?
Just installed a Rainbbow 320 and barely getting a trickle of water flowing in to it.
(Have the see through version and moved the input to the cylinder to the top. )

I won't normally use it (using BBB method) but want it for backup when we are away.

The only way I see any flow is with the metering valve all the way open and the pump turned up to 3450 RPM.
The 320 is in the middle of a straight run of 2" pipe from the filter back to the returns.
I normally run the pump at 1250-1750 RPM.

How much pressure do I need to push water through the this thing?

TIA
Steve
 
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