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Zero Power, Self-Watering, Self-Regulating Container Garden

Step 3The Shut-Off Mechanism

The Shut-Off Mechanism
This is the fun bit.

We're going to use the ballcock assembly to make the shut-off valve, but since the water will be coming from the top, not the bottom (as it was designed to do), we're going to have to flip the valve around so that the fulcrum is on the other side.

Also, this whole assembly is going to fit inside the small tupperware container so the float arm will have to be shortened and a new, smaller float put on the end.

This may seem a bit complicated at first, but if you read through all the steps and understand what you are trying to achieve in the end it's actually pretty simple and can be adjusted for the specific design of ballcock mechanism you have. Also, once you've done one you'll be able to do additional ones pretty quickly and easily.
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Author:kingnemo