The double action float valve is connected to a single pipe and a tank and controls both the filling and discharge of the tank. The double action float valve utilizes a valve body, an obturator positioned within the valve body, a unidirectional device, and a float connected to the obturator. When the inflow pressure from the pipe is greater than the outflow pressure of the tank, the tank is filled until the float reaches a predetermined level. When the outflow pressure of the tank is greater than the inflow pressure, the double action float valve is automatically reconfigured to discharge the fluid from the tank into the pipe.

A top fill water reservoir system that allows the reservoirs to be filled without waiting for a reverse osmosis (RO) filter to produce enough water to fill the system and avoids the need for a service worker to remove the system from the cabinet, or wait for RO filtration, to fill the reservoirs. The top fill water reservoir system comprises a drinking reservoir adapted to store and dispense drinking water. A supply reservoir in fluid communication with the drinking reservoir and adapted to feed water into the drinking reservoir and receive water from a reverse osmosis (RO) filter. An overflow tube adapted to connect an upper portion of the drinking reservoir to the supply reservoir and feed overflow water from the drinking reservoir to the supply reservoir.

Disclosed is a sheath delivery system that uses a continuous flow of sheath fluid into a pressurized internal reservoir that substantially matches the outflow of sheath fluid through the nozzle of a flow cytometer. A substantially constant level of the sheath fluid is maintained. If the sheath fluid level falls below a desired level, or goes above a desired level, a dampened control system is used to reach the desired level. In addition, air pressure in the pressurized internal container is controlled so that an external sheath container can be removed and refilled with additional sheath fluid without stopping the sheath delivery system 100. Differences in pressure are detected by a droplet camera, which measures the droplet breakoff point to determine the pressure of the sheath fluid in the nozzle.

Methods for managing a hazardous fluid within a pipeline and within a storage facility, and in particular for managing a potential or actual leak of the hazardous fluid. Such methods include the detection of such an event by one or more sensors, and the containment and the mitigation of the event.

A top fill water reservoir system that allows the reservoirs to be filled without waiting for a reverse osmosis (RO) filter to produce enough water to fill the system and avoids the need for a service worker to remove the system from the cabinet, or wait for RO filtration, to fill the reservoirs. The top fill water reservoir system comprises a drinking reservoir adapted to store and dispense drinking water. A supply reservoir in fluid communication with the drinking reservoir and adapted to feed water into the drinking reservoir and receive water from a reverse osmosis (RO) filter. An overflow tube adapted to connect an upper portion of the drinking reservoir to the supply reservoir and feed overflow water from the drinking reservoir to the supply reservoir.

Disclosed is a basement sewer drain pump housing that draws fluid from a drain into a housing, where after the fluid is discharged from the housing and out of the basement. The device comprises a pickup tube having a fluid level sensor, which is placed within a sewer main drain or floor drain. The housing comprises an enclosed volume, a suction tube connected to the pickup tube, a suction pump, and a discharge pump. The pump is activated by a switch controlled by the pickup tube fluid sensor, the fluid is drawn into the housing from the drain and discharged through a discharge pipe. The device operates from outlet or battery and serves as a basement drain pump that prevents fluid and sewage backflow during power outages and plumbing blockages. Another modification provides two donuts to prevent the flow of fluid locking both the floor drain and the main sewer drain. Another embodiment show an inflator to stop the flow of fluids.

A liquid measuring beaker is suitable for measuring an amount of a liquid required in a liquid mixing process. The liquid measuring beaker includes a shell and an adjusting partition. The shell defines a reservoir having a volumetric capacity, in which the shell has a first opening passing through a bottom of the shell. The adjusting partition is vertically movable in the reservoir for adjusting the volumetric capacity, in which the adjusting partition has a second opening passing through the adjusting partition.

Disclosed is a sheath delivery system that uses a continuous flow of sheath fluid into a pressurized internal reservoir that substantially matches the outflow of sheath fluid through the nozzle of a flow cytometer. A substantially constant level of the sheath fluid is maintained. If the sheath fluid level falls below a desired level, or goes above a desired level, a dampened control system is used to reach the desired level. In addition, air pressure in the pressurized internal container is controlled so that an external sheath container can be removed and refilled with additional sheath fluid without stopping the sheath delivery system 100. Differences in pressure are detected by a droplet camera, which measures the droplet breakoff point to determine the pressure of the sheath fluid in the nozzle.

Methods for managing a hazardous fluid within a pipeline and within a storage facility, and in particular for managing a potential or actual leak of the hazardous fluid. Such methods include the detection of such an event by one or more sensors, and the containment and the mitigation of the event.

Disclosed is a sheath delivery system that uses a continuous flow of sheath fluid into a pressurized internal reservoir that substantially matches the outflow of sheath fluid through the nozzle of a flow cytometer. A substantially constant level of the sheath fluid is maintained. If the sheath fluid level falls below a desired level, or goes above a desired level, a dampened control system is used to reach the desired level. In addition, air pressure in the pressurized internal container is controlled so that an external sheath container can be removed and refilled with additional sheath fluid without stopping the sheath delivery system 100. Differences in pressure are detected by a droplet camera, which measures the droplet breakoff point to determine the pressure of the sheath fluid in the nozzle.