The Vector 21 Spas Waterfall Valve is a high-quality replacement part designed specifically for Marquis Vector 21 Series spas from 2016 and newer. Featuring a two-tone gray design with a distinctive "W" on the handle, this valve controls the on/off function of your spa's waterfall feature. With ¾” barb connections, it ensures a secure and easy installation. This valve offers the perfect replacement for a worn or damaged waterfall valve, allowing you to restore full control over the soothing waterfall feature in your spa.