Patent ID: 11940424
Assignee: WATERS TECHNOLOGIES CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  B  F | IPC B  G

Claim 6:
7. A method of mixing fluid comprising:
providing a gradient proportioning valve of claim 1;
receiving a plurality of fluids in the plurality of inlet ports of the gradient proportioning valve;
receiving at least one of the plurality of fluids in the at least one accumulator chamber;
opening and closing at least one of the plurality of conduits in a controlled manner with the actuation mechanism having the piston located within the bored structure surrounding the piston;
rotating the piston about the bored structure to open and close the at least one of the plurality of conduits in the controlled manner;
maintaining the fluid tight seal between the piston and the bored structure during the opening and closing;
mixing the plurality of fluids in the controlled manner within the manifold of the gradient proportioning valve; and
outputting the fluid composition from the common outlet port of the gradient proportioning valve.