Systems and methods for controlling fluid flow are described. In some aspects, a system may include a first port, a second port, and a third port. The system may be configured to be in a first state if a male fitting of a device is not inserted in a female fitting of the third port. The valve may block a first fluid path defined between the first port and the third port if the system is in the first state. The system may also be configured to be in a second state if a male fitting of a device is fully inserted in the female fitting of the third port. The valve may block a second fluid path defined between the first port and the second port if the system is in the second state.

Systems and methods for controlling fluid flow are described. In some aspects, a system may include a first port, a second port, and a third port. The system may be configured to be in a first state if a male fitting of a device is not inserted in a female fitting of the third port. The valve may block a first fluid path defined between the first port and the third port if the system is in the first state. The system may also be configured to be in a second state if a male fitting of a device is fully inserted in the female fitting of the third port. The valve may block a second fluid path defined between the first port and the second port if the system is in the second state.

A breather device includes an intake path configured to communicate between an interior space of a target case and an exterior space, an exhaust path configured to communicate between the interior space and the exterior space and at least partially separated from the intake path, an intake valve inserted in the intake path and configured to allow outside air to flow into the interior space only when an internal pressure Pi is lower, at least by a fixed extent, than an external pressure Po, and an exhaust valve inserted in the exhaust path and configured to allow gas within the interior space to flow toward the exterior space only when the internal pressure Pi is higher, at least by a fixed extent, than the external pressure Po, and a water stop filter disposed downstream of the intake valve in an intake air flowing direction in the intake path.

The invention provides an apparatus for adjusting the flow of a fluid within a conduit, comprising a slide plate with a flat body and a fixed plate with a flat body. The slide plate and fixed plate have openings on their bodies. At a fully closed position, the openings of the slide plate do not substantially overlap with the openings of the fixed plate. By rotation of an actuator shaft and drive pin disposed thereon, the slide plate may move relative to the fixed plate, whereby the openings of the slide plate begin overlapping with the opening of the fixed plate, thereby allowing flow of fluid through the openings. Sequentially or independently from the movement of the slide plate, rotation of the actuator shaft may cause the fixed plate to rotate relative to the walls of the conduit, whereby flow of fluid may pass through the opening between the conduit and fixed plate assembly.

The invention provides an apparatus for adjusting the flow of a fluid within a conduit, comprising a slide plate with a flat body and a fixed plate with a flat body. The slide plate and fixed plate have openings on their bodies. At a fully closed position, the openings of the slide plate do not substantially overlap with the openings of the fixed plate. By rotation of an actuator shaft and drive pin disposed thereon, the slide plate may move relative to the fixed plate, whereby the openings of the slide plate begin overlapping with the opening of the fixed plate, thereby allowing flow of fluid through the openings. Sequentially or independently from the movement of the slide plate, rotation of the actuator shaft may cause the fixed plate to rotate relative to the walls of the conduit, whereby flow of fluid may pass through the opening between the conduit and fixed plate assembly.

A vented draining device configured to be affixed to an existing container, such as a plastic beverage bottle with a threaded neck finish. The vented draining device allows for the attachment of a tube for the connection of the draining device to a fluidic system for draining while venting air from the existing container. Apertures in the draining device provide venting for the exhaust of air which is displaced by the fluid which is drained into the container.

A vented draining device configured to be affixed to an existing container, such as a plastic beverage bottle with a threaded neck finish. The vented draining device allows for the attachment of a tube for the connection of the draining device to a fluidic system for draining while venting air from the existing container. Apertures in the draining device provide venting for the exhaust of air which is displaced by the fluid which is drained into the container.

In some examples, a system includes a display and a computing device coupled to the display. The computing device includes a memory and one or more processors coupled to the memory, and the memory includes instructions that when executed by the one or more processors identify, based on at least an identity of a worker, one or more articles of PPE for the worker to use and display an avatar of the worker, where displaying the avatar includes equipping the avatar with the one or more articles of PPE.

An apparatus is shown for removing valve caps from an instrument. A chamber is formed along a longitudinal axis of a rigid tool body, where the chamber includes an opening formed in a first end of the tool body for receiving a bottom cap of a valve of the instrument. An inner wall surface of the chamber tapers from the opening of the tool body such that a cross sectional radius of the chamber reduces with respect to the longitudinal axis. Splines are formed in the internal wall surface for engaging knurls on a bottom cap of the valve. The splines can have a cross section that is V shaped semi-circular or scalloped. The tool body can include a shank or openings formed in a second end of the tool body using a driver to apply torque to the tool body.

An apparatus is shown for removing valve caps from an instrument. A chamber is formed along a longitudinal axis of a rigid tool body, where the chamber includes an opening formed in a first end of the tool body for receiving a bottom cap of a valve of the instrument. An inner wall surface of the chamber tapers from the opening of the tool body such that a cross sectional radius of the chamber reduces with respect to the longitudinal axis. Splines are formed in the internal wall surface for engaging knurls on a bottom cap of the valve. The splines can have a cross section that is V shaped semi-circular or scalloped. The tool body can include a shank or openings formed in a second end of the tool body using a driver to apply torque to the tool body.