NDS Control Zone Kits make mastering drip zones simple by providing the necessary components for on/off control, filtration and pressure regulation in a single unit. These convenient kits are preassembled for ease of installation, featuring a valve, pressure regulating filter, and universal fitting (and flow control handle). Each component in this assembly is made of high-quality glass filled nylon, which is stronger and more durable than other plastic components. The valve featured in this kit has a 1 inlet size, 4 stainless steel bolts on the bonnet, (a flow control handle,) a unique on/off switch, and is compatible with both standard 24V and two-wire controller systems. The pressure regulating filter in this kit contains a 200 mesh stainless steel screen, and features an EZ-flush cap for easy access to the filter. This kit also comes with a universal Smart-Loc? fitting that will accept 16-18mm drip tubing.