An isolation valve assembly is provided that includes a valve body having an inlet and an outlet, a sealing body disposed within an interior cavity of the valve body, and an actuatable closure element disposed within the valve body. The sealing body comprises a channel extending between a first opening on a surface of the sealing body and a second opening on an opposite surface of the sealing body. The sealing body is rotatable between a first position permitting gas flow from the inlet to the outlet of the valve body via the channel, and a second position preventing gas flow from the inlet to the outlet of the valve body. The actuatable closure element is configured to retain the sealing body stationary in the first position or the second position.

By mounting a line blind valve (2) between a grease container (i) and a grease lubrication pump (3) replacement and mounting of the grease container can take place without leak of grease during the mounting as the outlet section must turn downwards during the mounting. By providing the installation with a line blind valve this can block grease leakage during the mounting and thereafter be opened. The valve (2) includes a flat central part (1o) with an opening (ii) which part can be displaced in relation to an upper positioned inlet section (4) and a lower positioned outlet section (8) and by displacement of the slide open and close for passage. In order to keep these parts (4, 8, 10) together a magnet (6, 7) is embedded in each of the two parts (4, 8) by which a sealed connection is secured with no air infiltration.

The present invention includes a lateral support member for a server computer constructed to permit advantageous airflow. The present invention can be operated to shunt organized airflow into multiple computer cases and/or organized airflow from multiple computer cases to a dedicated heat reservoir.

Pressure-reduction devices for fluid systems are disclosed. An example device includes a housing defining an axial fluid passageway between an inlet and an outlet. A first plate is fixed to the housing and positioned in the axial fluid passageway. A second plate is positioned adjacent the first plate in the axial fluid passageway. The second plate is moveable relative to the first plate between a first position to move the pressure-reducing device to a closed position to restrict or prevent fluid flow through the axial fluid passageway and a second position to move the pressure-reducing device to an open position to allow fluid flow through the axial fluid passageway.

A system for exhausting hazardous stored energy from a pneumatic subsystem of a railcar, comprises: an air supply for delivering air to the pneumatic subsystem of the railcar; and an isolation valve interposed between the air supply and the pneumatic subsystem of the railcar. When the isolation valve is in a normal operating position, a supply port and a delivery port of the isolation valve are in fluid communication with one another, but when the sliding shoe is in the second position, the sliding shoe effectively closes access to the supply port, and the delivery port is in fluid communication with an exhaust port of the isolation valve. The isolation valve further includes a means for locking the sliding shoe in the second position.

The present invention includes a server system that uses an airflow source that can be external to the computer that the airflow source cools. The computer may be sealed such that the conduits are the primary source of fluid ingress and egress. The airflow source can be positioned in a case of the computer, support members affixing the computer to a rack stand, the rack stand, or beyond conduit that conducts fluid to the rack stand.

A valve assembly includes a valve body and an opening extending through the valve body along a longitudinal axis. The valve assembly also includes a valve member arranged within the opening, the valve member being movable, along the longitudinal axis, between an open position and a closed position. The valve assembly includes an upper seal positioned to seal against at least a first portion of the valve body. The valve assembly includes a lower seal positioned to seal against at least a second portion of the valve body, wherein both the upper seal and the lower seal travel with the valve member as the valve member moves between the open position and a closed position.

Disclosed is system, method, and rack stand portion for the advantageous cooling of computer equipment. The rack stand includes a hollow body that may be formed of cartridges. Gas from an airflow source is guided into the rack stand body and then into a sealed case of the computer equipment. Air flow is then guided out of the computer equipment for recirculation, exhaust, or other purpose.

Disclosed is system, method, and rack stand portion for the advantageous cooling of computer equipment. When multiple instances of computer equipment are managed from a central authority, cooling, heating, and/or cessation of either can be controlled in a way that enhances efficiency. Impediments that control access channels and interior access to computer equipment is toggled by the present invention.

Fracturing systems with frac valves having gates for controlling flow of fracturing fluid are provided. In one embodiment, a fracturing apparatus includes a frac valve having a housing with a cavity transverse to a bore. A gate is positioned in the cavity and is movable between open and closed positions to selectively block flow through the bore. The gate includes a seal assembly positioned to seal against a sidewall of the cavity to surround the bore and block flow through the frac valve when the gate is in the closed position. The seal assembly can be actuated between a less-energized state and a more-energized state following movement of the gate within the cavity from the open position to the closed position. Additional systems, devices, and methods for fracturing are also disclosed.