Abstract: A liquid-in-stem thermometer includes a bulb configured to contain a thermometric fluid and a tube in fluid communication with the bulb. The tube has an inner surface. The liquid-in-stem thermometer further includes a layer of fluoropropyltrimethoxysilane. The layer of fluoropropyltrimethoxysilane is disposed on the inner surface of the tube. The thermometric fluid is saline water.

Abstract: A closed loop system for obtaining a sample of a fluid from a source of fluid is disclosed, the system including a collection vessel having a fluid chamber disposed therein. A valve assembly is disposed within the collection vessel and adapted to selectively open and close a fluid communication path between the fluid chamber and an associated fluid receptacle. An inlet provides a fluid communication path between the source of fluid and the fluid chamber, and an outlet provides a fluid communication path between the fluid chamber and a fluid recovery system.

Abstract: A closed loop system for obtaining a sample of a fluid from a source of fluid is disclosed, the system including a collection vessel having a fluid chamber disposed therein. A valve assembly is disposed within the collection vessel and adapted to selectively open and close a fluid communication path between the fluid chamber and an associated fluid receptacle. An inlet provides a fluid communication path between the source of fluid and the fluid chamber, and an outlet provides a fluid communication path between the fluid chamber and a fluid recovery system.

Abstract: A water detector probe is disclosed which can be wetted with a small quantity of water and including a manually operated screw-type pump to force the water into an electrically conductive central passageway and thence into contact with the fuel side and, as well as, the grounded main body of the probe to complete an electrical circuit which, in turn, controls fuel flow to an aircraft, for example.

Abstract: A wear gauge for determining excessive wear of the notches and lugs of an aircraft fueling nozzle adapter to expeditiously sense wear which might result in leakage of fuel during an aircraft refueling operation.

Abstract: A pressure gauge having a pressure operated piston for measuring the difference in pressure between two pressure signals including an automatically operative pressure relief valve and a manually operable three-way valve to provide a venting function useful for inspecting the operation of the pressure operated piston of the pressure gauge.

Abstract: A wear gauge for determining excessive wear of the notches and lugs of an aircraft fueling nozzle adapter to expeditiously sense wear which might result in leakage of fuel during an aircraft refueling operation.

Abstract: Filters for treatment of jet fuels and light hydrocarbons include clay filter material to remove surfactants and other contaminants. One of the most common systems has a series of replaceable filter elements, each in the form of an elongated annulus, about 7 inches in diameter and about 18 inches long, where the fluids flow from outside to inside through the clay filter material. These fiter elements are stacked with one or more in series on a common collector tube for the filtered fluids. The unfiltered fluids are applied to the outside of the stacks of bags, and the filtered fluids are drawn out of the common collector.