1 / 4" Nozzle Holder, (90°), Low Profile The water injection Hyper-Sonic nozzle is screwed into the holder and connected to our 1/4" pressure line PLEASE NOTE: The nozzle holder is delivered by Snow Performance without Checkvalve! Snow Performancel Injection Check Valve is custom engineered for methanol water injection. With this check valve it/s not possible for it to open during engine vacuum. It also will help keep pressure in the water-methanol line. All this is being down while not reducing flow rate of your Water Injection system. Highly recommended when no Solenoid Upgrade is installed! Water Injection Nozzle holder for the Boost Cooler Hyper-Sonic nozzles with new 90° low profile design. - Brass nickel plated - Internal buna o-ring - Metal collet hose release ring - Max operating pressure 20 bar - 100% methanol compatible