Provided is a device for measuring a micro flow rate. The device includes a container having an internal space for containing a fluid flowing therein and an inflow line and an outflow line formed in communication with the internal space, a fluid level gauge configured to sense whether a level of a fluid collected in the container rises to a predetermined height to conduct or block flow of an electric current, a control valve disposed in the outflow line and configured to open or close the outflow line according to a state in which the control valve is electrically connected to or disconnected from the fluid level gauge such that the outflow line is opened or closed according to a change in the fluid level; and a control unit configured to calculate a micro flow rate of the fluid collected in the container using information acquired from at least one of the fluid level gauge and the control valve.

A fuel pump assembly includes an attachment section and a pump housing. The attachment section includes an upper telescoping section having an outer portion and a support rod that extends into the outer portion for telescoping movement with respect thereto. The support rod further extends downward from the outer portion. The pump housing is supported to a lower end of the support rod of the attachment section. The upper telescoping section of the support rod is configured such that the pump housing is movable between a first position and a second position, such that in the first position the pump housing is retained by the upper telescoping structure a first distance away from the attachment section and in the second position the pump housing is located a second distance away from the attachment section. The first distance is greater than the second distance.

A fuel sender assembly having a housing, a first positioning mechanism, a second positioning mechanism and a sender unit. The first positioning mechanism contacts an outer surface of the housing and is movable in a first direction relative to the housing. The first positioning mechanism is further configured to retain the sender unit in any one of a plurality of positions relative to the outer surface of the housing. The second positioning mechanism includes a first part and a second part. The first part is attached to the first positioning mechanism. The second part is coupled to the first part such that the second part is movably positionable relative to the first part in a second direction perpendicular to the first direction. The sender unit is connected to the second part.

A liquid level control module comprising an elongated tubular housing immersible through a surface of a liquid and into a bulk volume of the liquid, and first, second, and third electrical switches, and first and second floats movable along the tubular housing. The first electrical switch is disposed within a lower portion of the tubular housing, the second electrical switch is disposed within an intermediate portion of the tubular housing, and the third electrical switch is disposed within an upper portion of the tubular housing. Each of the switches has an open state and a closed state. Motion of the first float relative to the first switch changes its state. Motion of the second float relative to the second switch changes its state, and motion of the second float relative to the third switch changes its state. Thus a two-float module may provide three level control signals.

A method for installing a device into a crude oil service operation, the method may include installing the device into a section of the crude oil service operation, wherein the device comprises a surface comprising a bonded layer coating, and may also include contacting the surface with the contaminant, wherein the contaminant is selected from the group consisting of paraffins and asphaltenes, and wherein the bonded layer is a molecularly bonded layer or a covalently bonded layer. Various systems include one having a liquid environment of paraffins and asphaltene, and a surface residing within the environment comprising a bonded layer composition. Systems also include pipelines and vessels having an internal surface therein comprising a bonded layer composition, and with hydrocarbon liquids present in the pipeline or vessel.

A device having cooperating surfaces, method of treating cooperating surfaces of a device, and method of installing device having cooperating surfaces, wherein the device may include a first cooperating surface and a second cooperating surface, and wherein the first and second surfaces form cooperating surfaces, and wherein at least one of the surfaces comprises a Self-Assembled Monolayer of Phosphonate (SAMP). The method of treating cooperating surfaces includes applying a coat of a Self-Assembled Monolayer of Phosphonate (SAMP) composition to at least one of said cleaned and dried surfaces. The method of installing may include installing said device into a section of a crude oil service operation.

A method and kit for treatment of a stainless steel or other nickel alloy component utilized in a crude oil service operation including cleaning a surface of the component to remove surface contamination; drying the cleaned surface of the component; applying a coat of Self-Assembled Monolayer of Phosphonate (SAMP) to the cleaned and dried surface of the component to form a treated component; and installing the treated component into a section of a crude oil service operation. The coating reduces paraffin/asphaltene deposition on the component. The kit includes a cleaner wipe impregnated with a cleaning substance for cleaning the component; a nano-coating wipe impregnated with a SAMP for applying a nano-coating of the SAMP to the component; and instructions for treating said component utilizing the cleaner wipe and the nano-coating wipe.

A method for treating surfaces of equipment comprising applying a Self Assembled Monolayer of a moiety to at least one surface of the equipment, wherein the equipment is selected from the group consisting of level sensors, sucker rods, turbine meters, Coriolis meters, magnetic flow meters, down hole pumps, check valves, valves, cables, drill bits, wire lines, and pigs, and the moiety may be present in mono, di or tri headed form or as a bis, gem-bis or tris headed form, and is selected from the group consisting of thiols, amines, silanes, siloxanes, selenides, tellurides, isocyanides, or heterocycles, and equipment having at least one surface comprising such a treated surface.

A fluid tank (1) of the type comprising at least two fluid-receiving chambers (2, 3) separated from each other by a partition (4), level detection means (5) for detecting the level of fluid in the first chamber (2), level detection means (10) for detecting the level of fluid in the second chamber (3), and signal emission means (20) for emitting a warning signal as a function of the level detected by said level detection means (5, 10). At least a portion of the level detection means (5) for detecting the level of fluid in the first chamber (2) is common to at least a portion of the level detection means (10) for detecting the level of fluid in the second chamber (3).

A method for treating surfaces of equipment comprising applying a Self Assembled Monolayer of a moiety to at least one surface of the equipment, wherein the equipment is selected from the group consisting of level sensors, sucker rods, turbine meters, Coriolis meters, magnetic flow meters, down hole pumps, check valves, valves, cables, drill bits, wire lines, and pigs, and the moiety may be present in di or tri headed form or as a bis, gem-bis or tris headed form, and is a phosphonate, and equipment having at least one surface comprising such a treated surface.