Completely Redesigned And Improved Model
The SmartValve MKII is the very same valve used in the Autopots and SmartGardens™ systems. The SmartValve MKII is capable of sub irrigating a suitable tray with up to four large plants in 10" containers, or six smaller plants in 5" containers. Each SmartValve is fed by a 1/4" connection to a low pressure (up to 8 psi) water or nutrient solution source. Since they can operate at extremely low pressure, a simple gravity feed reservoir can be used as a supply by making sure it is raised just slightly above the SmartValve(s). The higher the reservoir is situated above the SmartValve(s), the longer the 1/4" feed lines can be and the more SmartValves you can supply.

The SmartValve's method of operation resembles that of an ebb & flow system by employing a simple flood and drain principle but without the need to return depleted solution back to the reservoir. This simplifies nutrient solution management and opens up hundreds of new uses for this proven technique. By first flooding the tray to a depth of 1" with water or nutrient solution. It then "waits" for your plants to consume the solution before re-flooding the tray with a fresh charge. In this fashion, the Smartvalve automatically cycles plants through a complete wet/dry cycle that simulates the cycle of natural rainfall without the problems of pumps, timers and nutrient solution management. Refer to the diagrams below for a detailed illustration of its operation.