Zurn Wilkins 2 NR3XLDUC 2" NR3XL Pressure Reducing Valve with Double Union FNPT Copper Sweat Union Connection Flange Fitting_1" The patented scrubber mechanism actively The patented scrubber mechanism actively cleans the stainless steel screen with every cycle The 408 Series Hydrant is the result of spending a significant amount of time with our plumbing contractor customers and continuing to respond to their needs in the field Our time tested Pressure Reducing Valves are ideal for residential applications that require frequent cleaning of sediment and debris prevent buildup to protect commercial and residential plumbing systems double union and less union end connections