Fire Pump Info Reqd

[Donkin]

I have a fire system which requires two pressures for differing fire fighting applications.

The feed to the system is a water reservoir which can vary from 6 to 14barg (90-200psig).
I require a fire water pressure of 4barg (60psig) and 9barg (130psig).

Is there any pump which will automatically detect the suction pressure and either increase or drop the outlet pressure relative to the inlet pressure.

Is there a pump on the market with two outlet pressures both applications are low volume.

Thanks for your help in advance.

 

[pmover]

i will defer you to NFPA 20 and other related NFPA standards.

i understand the situation as a varying supply pressure (90-200 psig) with two independent fire systems to be operated(?) at 60 and 130 psig respectively? Please confirm.

While pressure is certainly a consideration, capacity is the other variable to design for. To maintain system pressure, a jockey pump may be utilized, but you must address capacity when system is activated.

The answer to your last question is most likely no, i know of no pump with two different outlet pressures (unless there are pumps with multiple impellers for different services/processes).
-pmover