Described herein is a modular, adjustable system for distributing fluids to one or more wellbores. The system is readily configured and assembled at a well site, and allows for one portion of the system to be isolated for service or repair while the remainder of the system continues to operate. The system includes a plurality of pump skids having both a distribution junction in fluid communication with inlets to of plurality of pump trucks and an exit junction in fluid communication with outlets of the plurality of pump trucks.