Abstract: The present disclosure relates to methodologies, systems and apparatus for cooling pump heads and providing balanced cooling and heat transfer between multiple pump heads. Multi-pump systems that are used to pump fluids that vary greatly in density with minor changes in temperature, such as the mobile phase of a C02-based chromatography system, require highly stable temperature conditions. In order to achieve a substantially equal average heat transfer between multiple pump heads and a coolant fluid, coolant fluid may be flowed through coolant passageways within the pump heads in a recursive and/or parallel coolant flow patterns. Such recursive and/or parallel coolant fluid flow patterns provide increased stability in temperature, compressibility, and density of the fluids passing through a multi-pump system.

Abstract: A downhole tool has a tool body with a tool body outer diameter. A liner with a liner outer diameter is connected to the tool body. The tool body has a plurality of diverter ports defined in a wall thereof. A closing sleeve is movable in the tool body to close the diverter ports. A closing seat attached to the closing sleeve is a frangible closing seat.

Abstract: A removable seat partition and/or seat blocker allows reconfiguration of any combination of seats to provide a barrier between seated persons and/or block or inhibit use of a seat to promote social distancing. The removable seat partition and/or blocker may be used on an aircraft seat, and/or on a seat in other modes of transportation, including but not limited to buses, subways, trains, etc., and/or on a seat in restaurants, bars, movie theaters, or any other public setting with seating.

Abstract: The present disclosure relates to methodologies, systems and apparatus for cooling pump heads and providing balanced cooling and heat transfer between multiple pump heads. Multi-pump systems that are used to pump fluids that vary greatly in density with minor changes in temperature, such as the mobile phase of a C02-based chromatography system, require highly stable temperature conditions. In order to achieve a substantially equal average heat transfer between multiple pump heads and a coolant fluid, coolant fluid may be flowed through coolant passageways within the pump heads in a recursive and/or parallel coolant flow patterns. Such recursive and/or parallel coolant fluid flow patterns provide increased stability in temperature, compressibility, and density of the fluids passing through a multi-pump system.

Abstract: The present disclosure relates to methodologies, systems and apparatus for cooling pump heads and providing balanced cooling and heat transfer between multiple pump heads. Multi-pump systems that are used to pump fluids that vary greatly in density with minor changes in temperature, such as the mobile phase of a CO2-based chromatography system, require highly stable temperature conditions. In order to achieve a substantially equal average heat transfer between multiple pump heads and a coolant fluid, coolant fluid may be flowed through coolant passageways within the pump heads in a recursive and/or parallel coolant flow patterns. Such recursive and/or parallel coolant fluid flow patterns provide increased stability in temperature, compressibility, and density of the fluids passing through a multi-pump system.

Abstract: The present disclosure relates to methodologies, systems and apparatus for cooling pump heads and providing balanced cooling and heat transfer between multiple pump heads. Multi-pump systems that are used to pump fluids that vary greatly in density with minor changes in temperature, such as the mobile phase of a C02-based chromatography system, require highly stable temperature conditions. In order to achieve a substantially equal average heat transfer between multiple pump heads and a coolant fluid, coolant fluid may be flowed through coolant passageways within the pump heads in a recursive and/or parallel coolant flow patterns. Such recursive and/or parallel coolant fluid flow patterns provide increased stability in temperature, compressibility, and density of the fluids passing through a multi-pump system.

Abstract: A seal assembly for pressurized fluid applications, including supercritical fluid chromatography applications, includes an annular body and a helical wound flat spring. A bore extends through the annular body. The annular body has an outer lip and an inner lip opposed to and spaced apart from each other. The inner lip, outer lip and an overhanging lip portion of the outer lip define a pocket in which the helical wound flat spring is disposed. A load line of the helical wound flat spring is directed substantially along a direction of separation between the inner and outer lips to bias apart the lips. Embodiments of the seal assembly have an improved distribution of contact pressure between the inside diameter of the seal assembly and the plunger with which the inside diameter seals, and between the outside diameter of the seal assembly and a gland surface with which the outside diameter seals.