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1 1/2 Inch Drop-Out Ball Valve.
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TM-5-4210-220-12 Truck Firefighting: Powered Pumper: Foam and Water 500-GPM Capacity; Centrifugal Pump Power Takeoff Driven Manual
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Foam Piping, Couplings, and Valves
TM 5-4210-220-12 4-18.  PUMP, PIPING, AND VALVES - Continued REMOVAL (1) Remove  nut  (1)  and  separate  the  control  rod  linkage  (2) control handle (8). (2) Set  control  handle  (8)  to  the  open  position  to  eliminate damage to the ball during removal of the valve body (5). (3) Remove the capscrews (3) that retain the end caps (4) to the valve body (5).  Some valve bodies are connected to piping on one end only. (4) Slide valve body (5) from between end caps (4). (5) Remove  O-rings  (6)  from  valve  body  (5)  grooves  and discard. (6) If pipe replacement is necessary, remove the end cap (4) from the pipe (7) using two pipe wrenches (7) Apply pipe sealant (item 22, Appendix E) to the threads of the new pipe and install the end caps (4). Be sure to install the end cap so that it will line up with the valve body and opposite end cap. INSTALLATION (1) Lubricate the O-rings (6) using silicone grease (item 27, Appendix E) and install into the valve body (5) grooves. (2) Set the control handle (8) to the open position to eliminate damage to the ball during installation of the valve body (5). (3) Carefully install the valve body (5) between the end caps (4).  Ensure the O-rings (6) are not damage d during installation. (4) Apply threadlock liquid (item 29, Appendix E) to the capscrew (3) and install the capscrews (3) through end caps (4) into valve body (5).  Tighten until snug.  Do not overtighten. (5) Attach the control rod linkage to the control handle (8).  Install the nut (1) onto ball joint and tighten firmly. (6) Test valve operation by actuating lever on structural control panel a few times. 4-241

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