Monthly Archives: May 2012

Week 5

Posted on May 4, 2012 by isaacmadan

This week we tested the device with a new commercial non-return valve in replacement of our homemade one using a yogurt lid and a plastic ring. The good news is that the non-return is reliable and does it’s job. The … Continue reading →

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Week 5 Update

Posted on May 3, 2012 by cacdiaz

This week, we acquired a store-bought non-return valve.  Good news: it was only $15, it fits our pipe, and it seals really well in one direction without causing a noticeable inhibition of flow in the other.  Unfortunately, we found that … Continue reading →

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