Abstract: A two-piece valve shell (body and bolted-on top bonnet) structure reduces possible leakage paths while also providing a top-side ball/stem installation/removal path (when the bonnet piece is not present) to facilitate initial valve assembly as well as subsequent inspection/removal of the ball/stem and other valve internals for conducting valve maintenance without requiring the valve body to be removed from its process connections. Internal wetted valve surfaces are coated with tantalum to provide a tantalum ball valve suitable for use as a sulfuric acid feed valve in severe high-temperature high-pressure industrial processes such as HPAL processes. Sealing cavities created by spaced-apart body-to-bonnet and/or stem-to-bonnet sealing structures can be inertly pressurized to hermetically isolate the sealing structures from ingress/leakage of corrosive process materials.

Abstract: A two-piece valve shell (body and bolted-on top bonnet having external fins to dissipate heat) structure reduces possible leakage paths while also providing a top-side ball/stem installation/removal path (when the bonnet piece is not present) to facilitate initial valve assembly as well as subsequent inspection/removal of the ball/stem and other valve internals for conducting valve maintenance without requiring the valve body to be removed from its process connections. In some implementations, a second/bottom bonnet is also attached to the body such that it covers another opening to the ball cavity.

Abstract: An offset butterfly valve comprising a butterfly disc which receives a splined valve stem is disclosed. The butterfly disc is positioned for sealing an annulus formed in the valve housing when the valve stem is rotated from an open position to closed position. Provision of the spline towards the center of the valve stem and the butterfly disc allows the butterfly disc to move along the valve stem. In a particular embodiment a valve seal is secured to the butterfly disc using a securing disc which is threaded into a threaded cylinder concentric with the butterfly disc.

Abstract: An offset butterfly valve comprising a butterfly disc which receives a splined valve stem is disclosed. The butterfly disc is positioned for sealing an annulus formed in the valve housing when the valve stem is rotated from an open position to closed position. Provision of the spline towards the center of the valve stem and the butterfly disc allows the butterfly disc to move along the valve stem. In a particular embodiment a valve seal is secured to the butterfly disc using a securing disc which is threaded into a threaded cylinder concentric with the butterfly disc.

Abstract: A gas shielding device used during a welding step in a controlled atmosphere of a sound attenuation panel includes an inert gas injector to inject inert gas onto the panel and a housing to receive a welding torch. The inert gas injector comprises an inert gas diffuser mounted on the periphery of the housing for receiving the welding torch.

Abstract: A method for repairing a sound attenuation panel is disclosed. The panel includes a structuring skin in metal material, a resistive layer in metal material and a honeycomb structure as acoustic absorption material directly added onto the structuring skin and resistive layer. The method includes a step in which one reinforcing pin is inserted into the thickness of the attenuation panel and a step in which the reinforcing pin is secured by welding in a controlled atmosphere to the structuring skin and resistive layer respectively.

Abstract: A gas shielding device used during a welding step in a controlled atmosphere of a sound attenuation panel includes an inert gas injector to inject inert gas onto the panel and a housing to receive a welding torch. The inert gas injector comprises an inert gas diffuser mounted on the periphery of the housing for receiving the welding torch.

Abstract: A method for repairing a sound attenuation panel is disclosed. The panel includes a structuring skin in metal material, a resistive layer in metal material and a honeycomb structure as acoustic absorption material directly added onto the structuring skin and resistive layer. The method includes a step in which one reinforcing pin is inserted into the thickness of the attenuation panel and a step in which the reinforcing pin is secured by welding in a controlled atmosphere to the structuring skin and resistive layer respectively.

Abstract: The invention concerns a data processing method comprising the following steps: a)receiving a set of structured and mutually linked data to be processed, of the value type with a name and/or container with a name and capable of containing at least a value having a name and/or another container having a name; b) defining a dictionary object adapted to store/find in a memory workspace a container or a value under/corresponding to a predetermined name; c) generating an empty instance of the dictionary object; d) verifying whether the structure of the data to be processed is of the value or container type; e) if the data is of the value type, storing/finding the value in the memory workspace under/corresponding to the name of the data to be processed, and returning to step d) until the last data to be processed of said set whereas if the data is of the container type, generating an empty dictionary sub-object as per step c), filling the dictionary subobject with the content of the data to be processed as per step

Abstract: The invention concerns a data processing method comprising the following steps: a)receiving a set of structured and mutually linked data to be processed, of the value type with a name and/or container with a name and capable of containing at least a value having a name and/or another container having a name; b) defining a dictionary object adapted to store/find in a memory workspace a container or a value under/corresponding to a predetermined name; c) generating an empty instance of the dictionary object; d) verifying whether the structure of the data to be processed is of the value or container type; e) if the data is of the value type, storing/finding the value in the memory workspace under/corresponding to the name of the data to be processed, and returning to step d) until the last data to be processed of said set whereas if the data is of the container type, generating an empty dictionary subobject as per step c), filling the dictionary subobject with the content of the data to be processed as per step