A gate valve for controlling flow of a fluid therethrough is provided. The gate valve includes a valve body having an outer surface, a bore, a valve cavity, a first seat pocket, a second seat pocket, and first and second fluid ports extending from the outer surface to the first and second seat pockets, respectively. First and second seats are positioned respectively within the first and second seat pockets. The seats include circumferential fluid channels and one or more conduits in fluid communication with the fluid ports for permitting a repair fluid to be injected into the ports to the faces of the seats. A gate is slidably positioned within the valve cavity between the first seat and the second seat for controlling flow of a fluid through the valve. Sand shields are also provided at the rear of the seats to capture particulates and to bias the seats against the gate.

An indicator device is provided for indicating a configuration of a gate valve. The indicator device includes a cam that is coupled to a valve stem of the gate valve such that rotation of the valve stem causes rotation of the cam. The indicator device further includes a gear that is coupled to the cam such that rotation of the cam causes movement of the gear and a gauge along which the gear is movable. The gauge displays an indicator that corresponds to the configuration of the gate valve based on a first position of the gear and a second position of the valve stem.

An indicator device is provided for indicating a configuration of a gate valve. The indicator device includes a cam that is coupled to a valve stem of the gate valve such that rotation of the valve stem causes rotation of the cam. The indicator device further includes a gear that is coupled to the cam such that rotation of the cam causes movement of the gear and a gauge along which the gear is movable. The gauge displays an indicator that corresponds to the configuration of the gate valve based on a first position of the gear and a second position of the valve stem.

A valve member driving device capable of bidirectional movement includes: a main body with two gas chambers, a first gas-inlet opening, a first gas-inlet channel, a second gas-inlet opening, and a second gas-inlet channel; a first piston rod with a first flow passage; a second piston rod with a second flow passage; a first guide rod extending into the first flow passage at one end and having a gas socket and a gas hole in communication with the gas socket; a second guide rod extending into the second flow passage at one end and having a gas-guiding flow passage; a valve cylinder fixedly provided on the first piston rod and having a valve-cylinder gas chamber, an advance channel, a withdrawal channel, and a valve-cylinder piston rod; and a valve member fixedly provided on the valve-cylinder piston rod.

A valve member driving device capable of bidirectional movement includes: a main body with two gas chambers, a first gas-inlet opening, a first gas-inlet channel, a second gas-inlet opening, and a second gas-inlet channel; a first piston rod with a first flow passage; a second piston rod with a second flow passage; a first guide rod extending into the first flow passage at one end and having a gas socket and a gas hole in communication with the gas socket; a second guide rod extending into the second flow passage at one end and having a gas-guiding flow passage; a valve cylinder fixedly provided on the first piston rod and having a valve-cylinder gas chamber, an advance channel, a withdrawal channel, and a valve-cylinder piston rod; and a valve member fixedly provided on the valve-cylinder piston rod.

An encapsulated valve system includes a first housing portion having a first facing surface, the first facing surface comprising a plurality of branch pathways formed as a recess within the first facing surface. The valve system further includes a second housing portion having a second facing surface, the second facing surface comprising a plurality of branch pathways formed as a recess within the second facing surface. A disposable conduit is configured to be interposed between the first and second housing portions and disposed within the recess of the first facing surface and the recess of the second facing surface. The disposable conduit is thus sandwiched between the first and second facing surfaces. A plurality of pinch valve actuators are mounted on one or both of the first housing portion and the second housing portion, the plurality of pinch valve actuators configured to pinch the disposable conduit at selective branch pathways.

An encapsulated valve system includes a first housing portion having a first facing surface, the first facing surface comprising a plurality of branch pathways formed as a recess within the first facing surface. The valve system further includes a second housing portion having a second facing surface, the second facing surface comprising a plurality of branch pathways formed as a recess within the second facing surface. A disposable conduit is configured to be interposed between the first and second housing portions and disposed within the recess of the first facing surface and the recess of the second facing surface. The disposable conduit is thus sandwiched between the first and second facing surfaces. A plurality of pinch valve actuators are mounted on one or both of the first housing portion and the second housing portion, the plurality of pinch valve actuators configured to pinch the disposable conduit at selective branch pathways.

A system for converting operation of a valve between an unbalanced operation mode and a balanced operation mode includes a housing adapted to couple to a valve body. The system also includes a lower stem, including lugs, the lugs having a lug diameter that is larger than an adjacent lower stem diameter. The system further includes a valve member nut coupled to a valve member, the valve member nut having an opening to receive the lower stem, and pins extending into the opening, the pins forming a reduced diameter portion of the opening. In the system, the lower stem couples to the valve member, via the valve member nut, when the lugs are axially aligned with the reduced diameter portion and the lower stem decouples from the valve member when the lugs are axially misaligned with the reduced diameter portion.

The present invention is an elastic (mechanically stretchable), sanitizing pouch configured to receive and hold an Electronic Device of a predetermined configuration. The elasticity of the fabric used maximizes surface contact with the Electronic Device and the closeness of the fabric of the invention with the outside surfaces of the Electronic Device. A liftable and removable cover flap on the front of the invention is used to hold and access the inside of the invention. The back of the invention includes at least one pocket. The invention further includes a pull tab to help lift an Electronic Device out of the invention. While inside the invention, the silver ions are released in the fabric and inhibit the colonization of bacteria, viruses and fungus on the Electronic Device.

The present invention is an elastic (mechanically stretchable), sanitizing pouch configured to receive and hold an Electronic Device of a predetermined configuration. The elasticity of the fabric used maximizes surface contact with the Electronic Device and the closeness of the fabric of the invention with the outside surfaces of the Electronic Device. A liftable and removable cover flap on the front of the invention is used to hold and access the inside of the invention. The back of the invention includes at least one pocket. The invention further includes a pull tab to help lift an Electronic Device out of the invention. While inside the invention, the silver ions are released in the fabric and inhibit the colonization of bacteria, viruses and fungus on the Electronic Device.