A shallow fluid extractor is configured to remove a low level of a fluid from a designated area. The shallow fluid extractor includes a vacuum pump assembly further including an electrical power source connected to a vacuum and a pump. A pipe assembly is configured within the designated area and connected to the vacuum pump assembly. When the low level of the fluid is reached the vacuum draws the fluid through the pipe assembly into the vacuum pump assembly which is then pumped away by the vacuum pump assembly.

A shut-off valve includes a float and a negative G control component. The float is configured to occlude a tank outlet at a first fluid level and 1 G and unocclude the tank outlet at a second fluid level and 1 G. The negative G control component is operatively connected to the float to limit fluid, e.g. liquid or gas, communication between a tank outlet and an ejector pump during negative G events. An ecology fuel return system includes a tank, an ejector pump, a float, and a negative G control component, as described above. The tank has an inlet and an outlet. The inlet is configured to be in fluid communication with components of an engine. The ejector pump is in fluid communication with the tank outlet and is configured to pump fuel from the tank to a fuel pump inlet of an engine.

A shallow fluid extractor is configured to remove a low level of a fluid from a designated area. The shallow fluid extractor includes a vacuum pump assembly further including an electrical power source connected to a vacuum and a pump. A pipe pick up assembly is configured within the designated area and connected to the vacuum pump assembly. When the low level of the fluid is reached the vacuum draws the fluid through the pipe pick up assembly into the vacuum pump assembly which is then pumped away by the vacuum pump assembly.

A shut-off valve includes a float and a negative G control component. The float is configured to occlude a tank outlet at a first fluid level and 1 G and unocclude the tank outlet at a second fluid level and 1 G. The negative G control component is operatively connected to the float to limit fluid, e.g. liquid or gas, communication between a tank outlet and an ejector pump during negative G events. An ecology fuel return system includes a tank, an ejector pump, a float, and a negative G control component, as described above. The tank has an inlet and an outlet. The inlet is configured to be in fluid communication with components of an engine. The ejector pump is in fluid communication with the tank outlet and is configured to pump fuel from the tank to a fuel pump inlet of an engine.

A water recycler is designed to recycle waste water from a drip-type humidifying system. A water reservoir is provided with an opening to accept a drain line from the existing humidifier system. Additional fresh water is added into the reservoir to maintain a preset level via a float valve. The system is further provided with an internal pump which is activated by an existing furnace switch. The pump draws water from the reservoir and supplies it to the humidifier for reuse. As water is consumed by the humidifier, it is replenished by the fresh water system to ensure an adequate supply of water at all times.

An apparatus for preventing the formation of beer stones and a gas-induced phenomenon, in which foamy beer spurts out of a draught beer container, is disposed in a pipe between the draught beer container and a draught beer dispensing apparatus so as to prevent the gas-induced phenomenon from occurring when the beer is discharged from the draught beer container to the draught beer dispensing apparatus, and to remove and prevent the formation of beer stones deposited on the inner surface of the pipe, between the draught beer container and the draught beer dispensing apparatus, or on the inner surface of the draught beer dispensing apparatus.

A method for delaying the maximum rate of discharge of water from a stormwater retention basin includes varying the vertical distance of an intake opening from the waterline inversely with water depth. A flow control device for carrying out the method includes an intake pipe with an intake opening that is pivotally mounted to a float body, the pivot being spaced from the intake opening.