Abstract: According to the invention, an apparatus to characterize leaks in a fluid storage container is disclosed. The apparatus may include a valve coupler, a gas manifold and a processor. The valve coupler may couple the apparatus with a closed valve on the fluid storage container. The gas manifold may be coupled with the valve coupler and may include a first branch connected with a gas monitoring device. The gas monitoring device may scan for a plurality of gases that may be emitted by the closed valve of the fluid storage container. The processor may be operable to receive gas monitoring device data representing masses for one or more of the plurality of gases detected by the monitor.

Abstract: According to the invention, a system for applying torque to a valve element that stops fluid flow through the valve is disclosed. The system may include an input element, a drive element, and a torque transferring mechanism. The input element may be configured to receive a torque. The drive element may be configured to apply substantially none of the torque, or at least a portion of the torque, to the valve element. The torque transferring mechanism may be configured to receive the torque from the input element, and transfer substantially none of the torque, or at least a portion of the torque, to the drive element based at least in part on a resistance of the valve element to turning.

Abstract: An apparatus for determining a leak rate of a gas from a closed valve is disclosed. The apparatus may include a vacuum pump, a pressure measuring device, a monitoring device, and a computer. The vacuum pump may be configured to couple downstream of the closed valve and decrease the pressure of the downstream side of the closed valve. The pressure measuring device may be configured to couple with the downstream side and determine the pressure. The monitoring device may be configured to couple with the downstream side and monitor a gas, where the gas may be emitted from the closed valve and be characterized by a mass. The monitoring device may further be configured to determine the mass. The computer may be configured to control the vacuum pump based on the pressure, and determine the leak rate of the gas based at least in part on the mass.

Abstract: According to the invention, an apparatus to characterize leaks in a fluid storage container is disclosed. The apparatus may include a valve coupler, a gas manifold and a processor. The valve coupler may couple the apparatus with a closed valve on the fluid storage container. The gas manifold may be coupled with the valve coupler and may include a first branch connected with a gas monitoring device. The gas monitoring device may scan for a plurality of gases that may be emitted by the closed valve of the fluid storage container. The processor may be operable to receive gas monitoring device data representing masses for one or more of the plurality of gases detected by the monitor.

Abstract: A system (10) for leak-testing an article (20) required to be fluid leak-tight in use at a fluid contacting region (38) thereof, to determine fluid leakage through the article to a non-fluid contacting region (40) of the article. The system includes a leak-testing fluid held in confinement by the fluid-contacting region of the article, a vacuum assembly (46, 66) arranged for establishing a vacuum environment at the non-fluid-contacting region of the article, and a leak detector (76) arranged to detect presence or absence of the leak-testing fluid in the vacuum environment, to determine fluid leakage through the article. The system enables leak sensitivity significantly below 1×10?6 standard atmospheric-cc/scc to be achieved, e.g., sensitivity in a range of from 1×10?7 to 1×10?11 standard atmospheric-cc/see, and is useful for quality assurance testing of vessels (118) intended to carry hazardous gases.

Abstract: According to the invention, an apparatus to characterize leaks in a fluid storage container is disclosed. The apparatus may include a valve coupler, a gas manifold and a processor. The valve coupler may couple the apparatus with a closed valve on the fluid storage container. The gas manifold may be coupled with the valve coupler and may include a first branch connected with a gas monitoring device. The gas monitoring device may scan for a plurality of gases that may be emitted by the closed valve of the fluid storage container. The processor may be operable to receive gas monitoring device data representing masses for one or more of the plurality of gases detected by the monitor.

Abstract: According to the invention, a system for applying torque to a valve element that stops fluid flow through the valve is disclosed. The system may include an input element, a drive element, and a torque transferring mechanism. The input element may be configured to receive a torque. The drive element may be configured to apply substantially none of the torque, or at least a portion of the torque, to the valve element. The torque transferring mechanism may be configured to receive the torque from the input element, and transfer substantially none of the torque, or at least a portion of the torque, to the drive element based at least in part on a resistance of the valve element to turning.