Sizing the jockey pump. (question)

[AN1010]

hi everyone, I would like to know how to size the jockey pump. i have read that it must size 1% of the fire pump. please help me.

 

[PEDARRIN2]

The purpose of the jockey pump is to maintain the pressure of the system so the fire pump doesn't have to.

I have not seen anything indicating what the flow rate should be, but it doesn't have to be much. I typically use 10 gpm. The TDH should be about 5-10 psig above what the system pressure is.

 

[TravisMack]

The 1% size is just a rule of thumb. We typically use that for most projects.

Travis Mack
MFP Design, LLC

http://www.mfpdesign.com

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