Blumat Shut-off Valve - Packaged
At times it's useful to be able to turn your system on and off: when you're installing it, adding to parts, harvest some plants and want to let others keep growing... This 8mm quarter-turn valve let's you do all those things!
Works ideal as an air purge valve, simply add to the end of your system and open it every few weeks to purge any air that may be stuck in your line. In a closed loop system, use an 8mm Tee fitting, with a few inches of 8mm supply tube, and finally add the shut-off valve to create the air purge valve (see third image).