A method of filtering fluid for injection into an injection well comprises detecting a fluid pressure in a conduit upstream of an actuator valve, verifying that the fluid pressure is within an operating pressure range, opening an actuator valve based on the verifying, receiving a fluid having suspended solids within a filter assembly in response to opening the actuator valve, actuating a pump in fluid communication with the filter assembly based on receiving the fluid within the filter assembly, and separating at least a portion of the suspended solids in the fluid within the filter assembly.

Filtration systems having a normal filtration mode and an enhanced filtration mode are described. In some arrangements, the filtration system is an air filtration system having a primary air filter element, a pre-cleaner, and a pre-cleaner bypass valve. Based on feedback from an intake air quality sensor the bypass valve is either opened or closed to selectively route intake air through the pre-cleaner during sensed dirty air operating conditions (e.g., heavy dust or moisture concentrations). In other arrangements, the filtration system is a liquid filtration system (e.g., a fuel or oil filtration system) that has a main filter and a secondary filter. The filtration system selectively routes the liquid being filtered through the main filter, the secondary filter, or a combination thereof depending on a detected event or sensed characteristic of the liquid.

Disclosed is a double-water-output cylindrical integrated water purifier. A clean water flow channel, a pure water branch flow channel and a waste water bypass flow channel are further provided in the base, and a clean water outlet in communication with the clean water flow channel is provided at a side of the base; the pure water flow channel is communicated with the clean water flow channel via the pure water branch flow channel, and a second check valve for controlling water to flow into the clean water flow channel unidirectionally is disposed in the pure water branch flow channel; the waste water outlet end face is further communicated with the clean water flow channel via the waste water bypass flow channel, and a third check valve for controlling water to flow into the clean water flow channel unidirectionally is disposed in the waste water bypass flow channel.

A method including the steps of providing fluid through an inlet into a vessel at atmospheric pressure. The method further includes passing the fluid through a filtration unit utilizing a downstream pump, the filtration unit creating a flux of less than or equal to about 0.05 gallons per minute per square foot (GPM/ft.sup.2), and moving the fluid processed by the filtration unit through an outlet of the vessel.

A liquid processing apparatus includes: a storage tank that stores a processing liquid; a first circulation line that causes the processing liquid sent from the storage tank to pass through a first filter and to return to the storage tank; and at least one second circulation line that causes the processing liquid to pass through a second filter and to return to the storage tank, wherein the second circulation line is shorter in a flow path than the first circulation line, a second flow rate of the processing liquid flowing into the second circulation line is smaller than a first flow rate of the processing liquid flowing into the first circulation line at a downstream side of a location where the first circulation line and the second circulation line are joined, and the second filter is smaller in a filtration amount per unit time than the first filter.

A liquid processing apparatus includes: a storage tank that stores a processing liquid; a first circulation line that causes the processing liquid sent from the storage tank to pass through a first filter and to return to the storage tank; and at least one second circulation line that causes the processing liquid to pass through a second filter and to return to the storage tank, wherein the second circulation line is shorter in a flow path than the first circulation line, a second flow rate of the processing liquid flowing into the second circulation line is smaller than a first flow rate of the processing liquid flowing into the first circulation line at a downstream side of a location where the first circulation line and the second circulation line are joined, and the second filter is smaller in a filtration amount per unit time than the first filter.

A urea water tank (11) is provided with a unit insertion opening (12H) that is disposed on a top surface part (12A) of a tank body (12) and opens more largely than an external dimension (D2) of a sensor unit (20), a sensor mounting member (16) that is disposed on the top surface part (12A) of the tank body (12) and closes the unit insertion opening (12H), and a filter which is formed as a tubular body to surround the sensor unit (20), and inserted in the unit insertion opening (12H) of the tank body (12) from a lower end (24A4)-side, and having an upper end (24A3) mounted on the top surface part (12A) of the tank body (12) by using the sensor mounting member (16).

A logic that is used in water bar screen assemblies to control the flow of water through the assembly and to methods.

A movable seal for interfacing between a first surface and a second surface includes a floating portion attached to a non-floating portion by a flexible coupling portion, wherein the non-floating portion is coupled to the first surface by nesting in a groove on the first surface, and wherein the non-floating portion forms a seal between the first and second surfaces when the first surface moves relative to the second surface in a first direction, and wherein the non-floating portion does not form a seal between the first and second surfaces when the first surface moves relative to the second surface in a second opposite direction.

A multi-bank cooking system includes multiple discrete cooking systems sharing common plumbing and integrated safety features. The multi-bank cooking system may include two or more rack-fryer systems, each with discrete frypots, operating mechanisms and cooking controllers. Each of the discrete cooking systems, may share a common plumbing system with integrated valves and controls receiving coordinated safety signals to facilitate safe and efficient operation of the system.