AnsweredAssumed Answered

Are large fire pumps, 4500 gpm or 5000 gpm split case horizontal, really provided?

Question asked by on Sep 17, 2020
Latest reply on Sep 17, 2020 by nocivus


I wonder large fire pumps, 4500 gpm or 5000 gpm split case horizontal, are commonly provided in real world projects. I am not sure there are demands for such high capacity pumps in the industry. In my experience, never used single large pump, instead used multiple small or medium size pumps, e.g. 2 x 2500 gpm.  

I am working on a project requiring 4500 or 5000 gpm fire water flow, but not sure whether I should provide 2 x 50% pumps of 1 x 100% pump. I heard that 1 x 100% would have more benefit than 2 x 50% not only in space wise, but also in electrical switchgear and cable cost wise. I found that there are a few suppliers who have 4500 & 5000 gpm models, but not sure they actually produce them. And, I expect that it will take longer time for manufacturing such pumps than the time for smaller pumps. Is there anything else I should consider when using 4500 or 5000 gpm fire pumps?

It will be appreciate if I can have some thoughts from who has experience on this.