WECO Hammer union FIG 206 Threaded or BW XXH connected Male Nut & Female Nut & Seat ... Union type mainly consists of Figure 100, Figure 200, Figure 206, Figure 400, Figure 600,Figure 602, Figure 1002, Figure 1003 ... ,Figure 1502 and Figure 2002.FIGURE 206 HAMMER UNIONNominal pipe Size:1”, 2”, 3”,4”,6”,8 ... O-ring extends union service life. Weco Hammer Union FIG 206