Example of use in automatic relay operation (No operator is required at the relay pump). The relay pumping line with VF63BS-R can be extended endlessly. When the water hits the VF63BS-R, engine and pump function are automatically started which means that no one need to be on and operate the pump pressure. When the water from master pump stops, the VF63BS-R is also stopped automatically. It is fully-automatically controlled and providing new solution for forest/wild land fire and long distance water transfer action.