A tank valve system comprises a main valve body, an overfill protection device (OPD), a gauge drive apparatus and a fuel level indicator. The OPD and gauge drive apparatus are configured to both be inserted through a narrow neck of a fuel storage tank prior to connecting the valve body to the neck. The valve body includes a primary fuel channel and a shuttle interface channel. The OPD includes an overfill float driving an overfill shutoff valve for controlling fluid flow from the primary channel into the tank. The gauge drive apparatus includes a gauge float, a shuttle, and an elongated extension body. The gauge float is movable with respect to the extension body between an uppermost position and a lowermost position, thereby driving the shuttle. The shuttle has a gauge actuation portion transportable within the shuttle interface channel to thereby actuate the fuel level indicator.

A tank valve system comprises a main valve body, an overfill protection device (OPD), a gauge drive apparatus and a fuel level indicator. The OPD and gauge drive apparatus are configured to both be inserted through a narrow neck of a fuel storage tank prior to connecting the valve body to the neck. The valve body includes a primary fuel channel and a shuttle interface channel. The OPD includes an overfill float driving an overfill shutoff valve for controlling fluid flow from the primary channel into the tank. The gauge drive apparatus includes a gauge float, a shuttle, and an elongated extension body. The gauge float is movable with respect to the extension body between an uppermost position and a lowermost position, thereby driving the shuttle. The shuttle has a gauge actuation portion transportable within the shuttle interface channel to thereby actuate the fuel level indicator.

An autonomous spacecraft propellant-gauging system, the system including a propellant tank, one or more heating devices, at least one temperature sensor and a processor. The heating devices are used to heat up the propellant tank, and the temperature sensors sense the temperature of the propellant content of the propellant tank. The processor controls operations of the heating devices and the temperature sensor. The processor further executes an algorithm to automate gauging of the propellant content of the propellant tank based on a reduced order model (ROM) and a number of parameters, and reports out an estimate of the mass of the remaining propellant of the propellant tank.

Disclosed herein is a water level indicator for a pontoon tank comprising a float mechanism that comprises a support mechanism that does not move; wherein the main support mechanism is fixedly attached to a manway cover that protects the pontoon tank; an extension system with an extension rod adjustment system that contacts the main support mechanism at a first end and that contacts a float at a second end that is opposed to the first end; and a movable portion that comprises a plurality of levers; wherein the movable portion contacts the main support mechanism and the extension system; and wherein the plurality of levers act cooperatively to displace a gauge rod in proportion to a fluid level in the tank.

Disclosed herein is a water level indicator for a pontoon tank comprising a float mechanism that comprises a support mechanism that does not move; wherein the main support mechanism is fixedly attached to a manway cover that protects the pontoon tank; an extension system with an extension rod adjustment system that contacts the main support mechanism at a first end and that contacts a float at a second end that is opposed to the first end; and a movable portion that comprises a plurality of levers; wherein the movable portion contacts the main support mechanism and the extension system; and wherein the plurality of levers act cooperatively to displace a gauge rod in proportion to a fluid level in the tank.

Showerhead devices incorporate sensors to control bath fill levels. Showerheads have interchangeable attachments, including bristle attachments. Oral care devices are attachable to standard shower arms. Pump devices allow various lotions and fluids to be used in conjunction with showers. Shower organizing devices provide for ordered storage and access to accessories. Bathtub spouts including sensors and valves to control bathtub filled levels.

A fluid level monitor incorporated into a fuel tank. A sensor module is adapted to being mounted to an exterior of the tank. A tube extends from the module within the tank and secures a housing at an interior location. The housing has a gear assembly, a float arm pivotally secures to the gear assembly and, in response to changes in a fluid level of the tank, causes the gear assembly to rotate a drive rod extending within the tube. A coupler forms a portion of the sensor module and is secured to an upper end of the drive rod. Rotation of the coupler relative to a PCB integrated into the sensor module produces an inductive signal indicative of the amount of displacement of the float and, consequently, the level of the fluid within the tank.

A method that configures a liquid-level transmitter device to generate a measured value for a level of a liquid. The method includes steps to correct for changes in physical properties of one or more components of the device. In one embodiment, the method utilizes a correction value that incorporates data from a temperature sensor disposed inside of the device, for example, inside of the electronics member.

A method that configures a liquid-level transmitter device to generate a measured value for a level of a liquid. The method includes steps to correct for changes in physical properties of one or more components of the device. In one embodiment, the method utilizes a correction value that incorporates data from a temperature sensor disposed inside of the device, for example, inside of the electronics member.

A no emission tank gauge has a housing having a valve connection extending from a bottom side of the housing, a gauge line within the housing, the gauge line having a plumb bob attached at a free end, a pulley attached within the housing and supporting the gauge line, the pulley configured to allow extension and retraction of the gauge line, and an actuator connected to the pulley and extending exterior to the housing and configured to actuate the extension and retraction of the gauge line via rotation of the pulley. The housing has a window in a wall of the housing facing a marked side of the gauge line. The valve connection has an opening sized to allow for passage of the plumb bob and the gauge line. The housing is sealed when the valve connection is connected to a valve to prevent escape of fluid.