I would suggest you might need to provide the size and length of pipe before 
the suction flange, the pump size, and the water flow test information for an 
appropriate answer.

Scott

Office: (763) 425-1001 x 2
Cell: (612) 759-5556

From: Taylor Schumacher <[email protected]>
Sent: Friday, August 5, 2022 8:35 AM
To: '[email protected]' 
<[email protected]>
Subject: [Sprinklerforum] WFD In Pump Suction Line

Does anyone have any experience with a paddle-type water flow detector in the 
suction line of a fire pump?

I have a long section of pipe between my backflow preventer and the suction 
flange of my pump that a plan reviewer wants supervised. I get the concern, but 
I have concerns with the paddle in the suction piping.

Any thoughts or experiences are greatly appreciated.


Taylor Schumacher ET



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