MechanicalPiper
Member
So, generally all pump systems I have installed have been engineered by someone else, and I just install per plans. Now I'm up against the task of designing a system and have run into some questions. You're supposed to double your GPM taken off of the 'performance curve' graph of the pump specs to get your DFU. The smallest pump I can find @ my head height is 22 GPM, and there is no 4" available. (Possibly over 120' and down 5 stories, but that's not financially an option for them)
By UPC code then this is impossible? At 44 DFU I could technically tie into a verticle 3" line if there was 4 or less other DFU already discharging into it, but that's not available.
My only thinking is to discharge up to my 8', run horizontally the 120', turn into 3" and run down the 5 stories, tie into 4". If they do decide to continue with this plan, I could not have any offsets in that 3" line beyond a 45 degree fitting correct? Also anyone know of any limitation to how far you can run the 2" horizontally. There will be no room for grade. I know it can be run flat, but not sure if there is a cap to that distance.
Just wondering if anyone has any ideas I'm not thinking of.
By UPC code then this is impossible? At 44 DFU I could technically tie into a verticle 3" line if there was 4 or less other DFU already discharging into it, but that's not available.
My only thinking is to discharge up to my 8', run horizontally the 120', turn into 3" and run down the 5 stories, tie into 4". If they do decide to continue with this plan, I could not have any offsets in that 3" line beyond a 45 degree fitting correct? Also anyone know of any limitation to how far you can run the 2" horizontally. There will be no room for grade. I know it can be run flat, but not sure if there is a cap to that distance.
Just wondering if anyone has any ideas I'm not thinking of.