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Rob Torcellini of Eastford, CT, built this valve for controlling water in his aquaponics system. I love all the clever mechanical tricks found inside!

This is a sequencing / indexing valve that I designed a couple of years ago. This uses a pinching mechanism to stop the flow of water. It is able to pass solids and keep operating if there is a clog elsewhere in the plumbing. I decided that it would be too expensive to develop and would show everyone how it works!


John Baichtal

My interests include writing, electronics, RPGs, scifi, hackers & hackerspaces, 3D printing, building sets & toys. @johnbaichtal

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