TM 10-4610-237-12
4.25 TEE AND DUAL GATE VALVE ASSEMBLY (9148-Y2) REPAIR.
b. Cleaning.
(1) Wash all components with clean water and detergent.
(2) Rinse components in clean water and dry with wiping rag.
c. Inspection.
(1) Inspect male couplings (9 and 26) for cracks.
(2) Inspect female coupling (43) for cracks and damaged lock arms.
(3) Inspect tee (45) for cracks or corrosion.
d. Repair.
(1) Refer to para. 4.24 to repair gate valve.
(2) Replace defective components. Do not reuse gaskets (3, 20 and 37), flange gaskets (10, 17, 27, 34 and
44) or lockwashers (5, 12, 22, 29 and 39).
e. Assembly. Refer to Figure 4-16.
(1) Position gasket (44) and female coupling (43) on tee (45).
(2) Install eight flat washers (42), screws (41), flat washers (40), lockwashers (39) and nuts (38).
NOTE
Ensure gasket is fully seated in groove of female coupling.
(3) Install gasket (37) in female coupling (43). Connect plug (36) to female coupling (43) with ring (35).
(4) Position gasket (34) and gate valve (33) on tee (45).
NOTE
Two additional flat washers (32 and 25) are used at the top two screw holes (four per gate valve) to
prevent the screws from coming in contact with the gate valve body and assure proper torque.
(5) Install ten flat washers (32), and eight screws (31), flat washers (30), lockwashers (29) and nuts (28).
(6) Position gasket (27) and male coupling (26) on gate valve (33).
(7) Install ten flat washers (25), and eight screws (24), flat washers (23), lockwashers (22) and nuts (21).
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