TM 10-3930-669-34 (22)  Install  poppet  (43),  preformed  packing (41),   and   fitting   (17)   in   poppet   body (42). (23)  Install    preformed    packing    (44)    and poppet body (42) in stack valve (27). (24)  Install    preformed    packing    (40)    and elbow (5). (25)  Install    preformed    packing    (39)    and elbow (7). (26)  Install    two    poppets    (37),    preformed packings (35), and fittings (10 and 11) in poppet bodies (36). (27)  Install   two   preformed    packings    (38) and poppet bodies  (36)  in  stack  valve (27). (28)  Install 90’ tee (3) on adapter (33). (29)  Install    preformed    packing    (34)    and adapter (33) in stack valve (27). 15-25