A circulating fluid regulated braking device for a vehicle includes a piston pump mounted directly on the hub of each vehicle wheel. The pumps mounted on front wheels are connected by pipes to a primary two-way valve, which, in turn, is connected by pipes to a primary storage tank to define a completely independent front wheel brake hydraulic circuit. The pumps mounted on rear wheels are connected by pipes to a secondary two-way valve, which, in turn,is connected by pipes to a secondary storage tank to define a completely independent rear wheel brake hydraulic circuit. A moveable inner body located in each of the primary and secondary two-way valves is linked to a vehicle brake pedal lever.

 
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