Fluid delivery systems and methods for continuous fluid flow

A method of delivering fluid in a continuous fluid delivery system, the method comprising:

• receiving a first fluid through a first inlet in fluidic communication with a first pump;
• receiving one or more signals from a first pressure sensor indicative of a first fluid pressure of the first fluid;
• receiving one or more signals from a second pressure sensor indicative of a second fluid pressure downstream from a second pump;
• comparing the first fluid pressure to the second fluid pressure;
• and
• upon a determination that the first pressure is about equal to the second pressure,
• (i) operably controlling a valve sufficient to switch the valve from a first position to a second position, wherein the first position permits fluid flow of the first fluid through a system outlet and the second position fluidically connects the first pump, the second pump, and the system outlet;
• and
• (ii) ceasing fluid flow through the first inlet substantially simultaneously with switching the valve from the first position to the second position.

A method of controlling a shear valve for fluid delivery comprising:

• receiving one or more signals from a first pump pressure sensor indicative of a first pressure generated by a first pump;
• receiving one or more signals from a second pump pressure sensor indicative of a second pressure generated by a second pump;
• comparing the first pressure to the second pressure;
• upon a determination that the first pressure is about equal to the second pressure, operably controlling the shear valve sufficient to rotate a rotor from a first position to a second position fluidically connecting a first rotor slot, a first stator orifice, a second stator orifice, and an outlet;
• and
• substantially simultaneously with rotating the rotor to the second position, operably controlling the first pump to cease.