United Technologies Corporation

David E Diaz

Steven Dill

Matthew J Howlett

A flange fitting for attaching to double wall tubes includes a fitting center port, a plurality of fitting mounts, inner and outer seal surfaces, fluid communication ports, and a connections surface. The fitting center port extends through the fitting for passing a primary fluid flow. The fitting mounts are spaced radially away from the center port for receiving fasteners. The inner and outer seal surfaces are predominantly flat. The fluid communication ports for pass a secondary fluid flow and fluid communication ports extend through the fitting from between the inner and outer seal surfaces to the connection surface between the inner sleeve connection and the outer connection. The connection surface is on a side of the fitting opposing the seal surfaces. The connection surface includes an inner sleeve connection and an outer connection.

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Dorado, Puerto Rico

David E Diaz