A tubular medical fluid flow set comprises a pressure sensing chamber connected in flow-through relation to fluid flow tubing of the set. The pressure sensing chamber defines a movable, flexible, impermeable diaphragm dividing the chamber into two separate compartments. The fluid flow tubing communicates with one of the compartments and is isolated from the other of the compartments. A port is carried on the chamber, the port having a seal therein, and communicating with the other of the compartments. Thus, the other of the compartments is hermetically sealed until the port is opened for connection with a pressure measuring device, to keep the flexible diaphragm in a desired, initial position prior to opening of the seal.

An Air Refueling Boom System comprising a boom joined to the tanker aircraft by means of a mechanical articulation with an inner fuel conduit and a nozzle at its distal end. The tip module of the boom includes a breakable section for separating the tip module in a first and a second portion for allowing a safe separation of tanker and receiver aircraft in a failure event of a refueling operation and linking means of its first and second portions to allow their separation in case of an overload on the nozzle when it is latched to the receptacle and to allow their separation in case of an overload on the nozzle when it is latched to the receptacle.

A protective cap is provided for protecting an end portion of a hydraulic hose of a hydraulic bicycle component. The protective cap is configured to be removably coupled to the end portion of the hydraulic hose. The protective cap comprises a head portion and a cord attachment portion. The cord attachment portion has a through hole for attaching a cord to the protective cap.