Certain embodiments described herein are directed to manifolds that comprise a moveable, internal sealing member that can be used to engage one or more ports of the manifold and prevent or reduce fluid flow from the engaged port into the manifold. In certain examples, the manifold can be used in a mass spectrometer to control fluid flow from an interface and a turbomolecular pump.

A downhole valve to be used in a flow management system that comprises a valve inlet for coupling with a hydrocarbon reservoir pump outlet, a valve outlet for coupling with production tubing transport to the surface pumped hydrocarbons, a valve body with a valve body centerline that extends between the valve inlet and outlet, and a spill port for bypassing a backflow.

Gas flow control valves comprising a valve housing including a cylindrical interior passage, and a housing opening extending from the interior passage through the housing. The gas flow control valve further comprises a cylindrical rotary valve element including a sidewall, and a rotary valve element opening extending through the sidewall. The valve element is rotatably received within the interior passage of the valve housing, such that the housing opening may be selectively aligned with the rotary valve element opening, and an area of overlap of the housing opening and the valve element opening may be varied by rotating the valve element within the interior passage of the valve housing.

A downhole valve to be used use in a flow management system comprises a valve inlet for coupling with a hydrocarbon reservoir pump outlet, a valve outlet for coupling with production tubing transport to the surface pumped hydrocarbons, a valve body with a valve body centerline that extends between the valve inlet and outlet, and a spill port for bypassing a backflow.

Certain embodiments described herein are directed to manifolds that comprise a moveable, internal sealing member that can be used to engage one or more ports of the manifold and prevent or reduce fluid flow from the engaged port into the manifold. In certain examples, the manifold can be used in a mass spectrometer to control fluid flow from an interface and a turbomolecular pump.

An online personal merchandise cataloguing system is equipped with integrated item tracking and hosted (or imported) social network functionality. The system comprises an internet application with a supporting backend network, the pertinent configuration and operation of both being substantially under the control of an individual retailer. Accessible through an internet browser or a smartphone app, the internet application is configured to provide a user with means for listing or otherwise cataloguing items of merchandise. In combination with and supported by the retailer's backend computer network, the internet application enables the user to share his online catalog with an extrinsic social network and to track cataloged items.

Gas flow control valves comprising a valve housing including a cylindrical interior passage, and a housing opening extending from the interior passage through the housing. The gas flow control valve further comprises a cylindrical rotary valve element including a sidewall, and a rotary valve element opening extending through the sidewall. The valve element is rotatably received within the interior passage of the valve housing, such that the housing opening may be selectively aligned with the rotary valve element opening, and an area of overlap of the housing opening and the valve element opening may be varied by rotating the valve element within the interior passage of the valve housing.

Embodiments of the present invention provide a flow router for inclusion in a production string that is for insertion in a well casing, the flow router comprising a retrievable assembly removably inserted in a perforated cover and a valve of the retrievable assembly including a valve body extending between opposed first and second ends of the valve to define an axial flow path, the retrievable assembly retrievable to and removable from an open end of the production string.

Gas flow control valves comprising a valve housing including a cylindrical interior passage, and a housing opening extending from the interior passage through the housing. The gas flow control valve further comprises a cylindrical rotary valve element including a sidewall, and a rotary valve element opening extending through the sidewall. The valve element is rotatably received within the interior passage of the valve housing, such that the housing opening may be selectively aligned with the rotary valve element opening, and an area of overlap of the housing opening and the valve element opening may be varied by rotating the valve element within the interior passage of the valve housing.

Embodiments of the present invention provide a flow router for inclusion in a production string that is for insertion in a well casing, the flow router comprising a retrievable assembly removably inserted in a perforated cover and a valve of the retrievable assembly including a valve body extending extends between opposed first and second ends of the valve to define an axial flow path, the retrievable assembly retrievable to and removable from an open end of the production string.