Abstract: The application relates to a valve arrangement for a filtration system. A valve assembly includes a valve body. The valve body includes a first central wall defining a first valve opening, a first fluid passageway, and a valve central opening, and a valve wall defining a second valve opening and a second fluid passageway. The valve assembly includes a first valve member disposed at the first valve opening. The first valve member is selectively repositionable between a first valve member first position, where the first valve member engages the first central wall such that the first valve member forms a first seal that substantially prevents a fluid from flowing through the one or more first fluid passageways, and a first valve member second position, where the first valve member disengages the first central wall such that the fluid is permitted to flow through the one or more first fluid passageways.

Abstract: A self-balancing floating battery case, comprising an upper casing and a lower casing, wherein the upper casing and the lower casing are connected by threads, a height of the upper casing is bigger than a height of the upper casing. A light opening is provided at an intermediate portion of the upper casing away from a center of the upper casing, a box surrounding the light opening is provided on an inner wall of the upper casing, the box is divided to be a PCB cavity and a battery cavity, a main body of the light opening deviates towards the PCB cavity and a main body of the battery cavity deviate towards the center of the upper casing. In the present invention, existing structures are modified, the battery case has a higher waterline, entrance of water can be prevented; and eccentricity of the center of gravity is corrected by weight.

Abstract: The present invention relates to the field of lighting, and in particular to a light-emitting lamp string wire, wherein the light-emitting lamp string wire comprises a lamp string wire male connector, a lamp string wire female connector, and bulb power cords and copper wire lamp power cords installed between the lamp string wire male connector and the lamp string wire female connector, wherein the bulb power cords are connected in parallel with several bulbs, and the copper wire lamp power cords are connected in parallel with several LED lamp beads.