High pressure valve with multi-piece stator assembly

A valve for liquid chromatography comprising:

• a mounting plate having a first side and a second side and having a plurality of openings extending through the mounting plate from the first side to the second side;
• a stator plate having a first side and a second side, wherein the first side of the stator plate is adapted to engage with the second side of the mounting plate, wherein the stator plate has a first plurality of openings proximal a periphery of the stator plate in the first side of the stator plate, including a first peripheral opening, and a second plurality of openings proximal a center portion of the stator plate in the second side of the stator plate, including a first central opening, wherein each of the first plurality of openings of the stator plate are in first fluid communication with one of the openings of the mounting plate;
• a rotor seal adapted to engage with the second side of the stator plate;
• a rotor shaft enabled to rotate around a longitudinal axis shared by the rotor shaft, the mounting plate, and the stator plate, wherein the rotor shaft is enabled to rotate about the longitudinal axis with respect to the mounting plate in order to form a second fluid communication between two of the second plurality of openings on the second side of the stator plate;
• and
• a first fluid pathway formed within the stator plate in third fluid communication between the first peripheral opening and the first central opening, wherein the first fluid pathway further comprises a sample loop.