Abstract: Exemplary embodiments of the present disclosure include systems, apparatuses, and methods that are directed to controlling pressure in a pressurized flow system, such as a CO2-based chromatography system or other pressurized flow systems. Exemplary embodiments of the present disclosure comprise one or more apparatuses, systems or methods for implementing multiple pressure regulators to control pressure. In addition to providing pressure control, apparatuses, systems and methods described herein dampen damaging thermal effects caused by pressure drops of a mobile phase including CO2.

Abstract: Exemplary embodiments of the present disclosure relate to systems and methods comprising a dynamic pressure regulator and a force balance needle that regulate pressure changes due to flow or composition changes in a pressurized flow system, such as, for example, a CO2-based chromatography system.

Abstract: Exemplary embodiments are directed to apparatus, systems and methods used in connection with a needle valve device operating in a pressurized flow system. The apparatus, systems and methods provide for automatic positioning of a needle relative to a seat in the needle valve device to provide consistent calibration with minimal user interaction after a maintenance event or upon a start-up of the pressurized flow system. The apparatus, systems and methods utilize a calibration collar secured to a shaft of an actuator within the needle valve device. The calibration collar includes one or more locking mechanism and a spring.

Abstract: Exemplary embodiments are directed to apparatus, systems and methods used in connection with a needle valve device operating in a pressurized flow system. The apparatus, systems and methods provide for automatic positioning of a needle relative to a seat in the needle valve device to provide consistent calibration with minimal user interaction after a maintenance event or upon a start-up of the pressurized flow system. The apparatus, systems and methods utilize a calibration collar secured to a shaft of an actuator within the needle valve device. The calibration collar includes one or more locking mechanism and a spring.

Abstract: Exemplary embodiments of the present disclosure relate to systems and methods comprising a dynamic pressure regulator and a force balance needle that regulate pressure changes due to flow or composition changes in a pressurized flow system, such as, for example, a CO2-based chromatography system.

Abstract: Exemplary embodiments of the present disclosure include systems, apparatuses, and methods that are directed to controlling pressure in a pressurized flow system, such as a C02-based chromatography system or other pressurized flow systems. Exemplary embodiments of the present disclosure comprise one or more apparatuses, systems or methods for implementing multiple pressure regulators to control pressure. In addition to providing pressure control, apparatuses, systems and methods described herein dampen damaging thermal effects caused by pressure drops of a mobile phase including C02.