Plastic Male Threaded 3/4" Adapter Kit 1000982 or 1001769 Includes A Pair of 3/4" male NPT Tubes, A Pair of large Black Nuts, and A Pair of Gaskets ( part # 54f ). Used to connect to Autotrol Valves ( like 163, 168, 263, 268 )directly or to any Autotrol By Pass. Commonly used with Autotrol 155 and 255 By Pass valves.