Unpowered Wicking Irrigation Controller with 25mm Valve

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Any irrigation system with a conventional irrigation controller can be upgraded to an unpowered system where each solenoid valve is replaced by an Unpowered Wicking Irrigation Controller with 25mm Valve. The conventional irrigation controller and the associated wiring become redundant.

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This amazing invention lets you set the volume of water discharged by each dripper or sprinkler during the irrigation event. The dripper or sprinkler discharge is also independent of the water supply pressure.

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The Unpowered Wicking Irrigation Controller uses onsite weather conditions to control irrigation scheduling rather than the static timer intervals in conventional devices.

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After irrigation and as water evaporates from the soil, water also evaporates from the container. The water in the container eventually reaches a low level corresponding to the soil drying out. The valve opens and irrigation begins. A dripper attached to the irrigation system refills the container during the irrigation. When the water in the container reaches a high level corresponding to the required watering of the plants, the valve shuts off and the cycle restarts.

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Once correctly calibrated, the Unpowered Wicking Irrigation Controller only sends water when plants need it and does not overwater. It responds to the same local weather conditions as the soil. Deep or shallow watering, frequent or delayed watering – all can be accommodated. You don’t have to ‘turn it off’ over winter as rain and cooler temperatures keep the container from drying out. You can leave your irrigation system unattended for months on end.

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A polyester cloth wicks water from inside the container to outside the container to evaporate and so the cloth is always wet.

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