Please Note: Most of our misting system components are brand specific. All DIG brand misting components are compatible with DIG's Ocean Breeze Misting Systems while most Orbit brand misting components will work in several of the Orbit Misting Kits. The DIG brand is not compatible with the Orbit brand. Please contact our Customer Support agents for assistance. The Orbit 3/8" Auto Drain Valve is a great addition to your misting system. Just as the name implies, the auto drain valve drains water from your misting system when system shuts down. This reduces clogging of the mist nozzles. Can be installed by threading into a 10-24 female threaded nozzle opening. The auto drain valve operates with a siphoning effect that draws the water out once the system de-pressurizes or installed at the low point of your mist system it will allow gravity to drain water out of the lines.