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Fire Pump Automatic Start with By-Pass
For fire pump automation
Opening of Fire Hydrant
Initial flow through flow switch on a by-pass (secundary circuit), preferencial way by the retention valve mounted in main circuit, turning the pump on.
Closing of Hydrant Water Output
The flow switch automatically will turn the pump off.
2 1/2" pipe
min. h = 4 m
VR Retention valve