Abstract: A spin filter plate is disclosed. The spin filter may be mounted in any type of separator/filter system used in irrigation system. The spin filter plate enables to create a cyclonic flow of the fluid, independent of the angle the fluid is supplied to the filter system.

Abstract: A spin filter plate is disclosed. The spin filter may be mounted in any type of separator/filter system used in irrigation system. The spin filter plate enables to create a cyclonic flow of the fluid, independent of the angle the fluid is supplied to the filter system.

Abstract: A passive, self-regulating valve includes a static pressure chamber and an elastically collapsible tube supported within the static pressure chamber. The elastically collapsible tube is defined by a geometry that determines an activation pressure of the valve. The passive, self-regulating valve also includes a flow restrictor in fluid communication with the elastically collapsible tube inside the static pressure chamber, as well as piping connecting a source of pressurized liquid both to the flow restrictor and to an opening into the static pressure chamber. The piping enables the flow restrictor to control flow rate of the pressurized liquid through the valve independent of the activation pressure of the valve. In a preferred embodiment, the flow restrictor is a needle valve.

Abstract: There is disclosed an apparatus for cleaning circular filter screens comprising at least one suction chamber fitted to a conduit of the dirt collection conduit system extending along a central axis of the housing of the filter screen. The suction chamber comprises a central nozzle through which fluid is forced to flow by virtue of a pressure differential between the outer surface of the filter screen and an extremity of the dirt collection conduit system. The fluid flow through the central nozzle creates a low pressure regime near the mouth of the central nozzle such that fluid is forced through a plurality of peripheral suction nozzles arranged around the central nozzle from the outer surface of the filter screen to the inside of the suction chamber, thereby forcing the dirt and retentate accumulated along the inner surface of the filter screen to be washed away.

Abstract: A passive, self-regulating valve includes a static pressure chamber and an elastically collapsible tube supported within the static pressure chamber. The elastically collapsible tube is defined by a geometry that determines an activation pressure of the valve. The passive, self-regulating valve also includes a flow restrictor in fluid communication with the elastically collapsible tube inside the static pressure chamber, as well as piping connecting a source of pressurized liquid both to the flow restrictor and to an opening into the static pressure chamber. The piping enables the flow restrictor to control flow rate of the pressurized liquid through the valve independent of the activation pressure of the valve. In a preferred embodiment, the flow restrictor is a needle valve.

Abstract: Self-regulating valve. The valve includes a static pressure chamber with an elastically collapsible tube supported within the static pressure chamber. A flow restrictor is in fluid communication with an inlet into the static pressure chamber for flow through the collapsible tube. Piping connects a source of pressurized liquid, both to the flow restrictor and to an opening into the static pressure chamber, whereby flow rate through the valve remains substantially constant with variations in pressure of the pressurized liquid. In a preferred embodiment, the flow restrictor is a needle valve.

Abstract: There is disclosed an apparatus for cleaning circular filter screens comprising at least one suction chamber fitted to a conduit of the dirt collection conduit system extending along a central axis of the housing of the filter screen. The suction chamber comprises a central nozzle through which fluid is forced to flow by virtue of a pressure differential between the outer surface of the filter screen and an extremity of the dirt collection conduit system. The fluid flow through the central nozzle creates a low pressure regime near the mouth of the central nozzle such that fluid is forced through a plurality of peripheral suction nozzles arranged around the central nozzle from the outer surface of the filter screen to the inside of the suction chamber, thereby forcing the dirt and retentate accumulated along the inner surface of the filter screen to be washed away.