Ball Valve

TM 3-1040-220-34&P

1 Nut

10 Chain and Slink

2 Handle

11. Flange

3 Lock stop plate

12 Body seal

4 Locknut

13 Seat ring

5 Thrust washer

14 Valve body

6 Valve stem

15 Ball

7 Stem seal

16 Seat ring

8 Lock plate

17 Body seal

9 Bolt

18 Quick-release pin

Figure 2-4. Ball valve.

2-8. Ball Valve

a. Description and Function. The ball valve fig. 2-4 is

(1) Disassembly. The ball valve should be disassembled

a lever-actuated valve used to control the flow of agent

and cleaned after every mission. To disassemble the

under pressure from the agent tank. The valve is closed

ball valve, proceed as follows:

(a) Perform

when the handle (2) is turned perpendicular to the hose.

decontamination operations described in TM 3-1040-

Turning the handle parallel to the hose opens it. The

220-12&P.

handle is secured in the closed position by the quick

(b) Remove quick release pin (18, fig. 2-4) and

release pin (18), which must be removed before the

chain and S link (10) from flange (11) and valve body

handle can be operated.

(14) by removing bolt (9).

Maintenance.

Direct support

maintenance

personnel are authorized to repair the ball valve by

(d) Remove handle (2).

replacing the components which are supplied as a repair

(e) Lift off lock stop plate (3).

kit.

(f) Remove locknut (4).

(g) Pull up and remove valve stem (6).

2-10