4-18 PUMP, PIPING, AND VALVES - Continued
If pipe replacement is necessary, remove the end cap (4) from the pipe (7).
Apply pipe sealant (item 22, Appendix E) to the threads of the new pipe and install the end cap (4)
hand tight. Continue to tighten end cap an additional 1-2 turns. Be sure to install the end cap so that it
will line up with the valve body and opposite end cap.
Lubricate the O-rings (6) using silicone grease (item 27, Appendix E) and install into the valve body
Set the control handle (8) to the open position to eliminate damage to the ball during installation of
the valve body (5).
Carefully install the valve body (5) between the end caps (4). Be sure the O-rings (6) are not
damaged during installation.
Apply threadlock liquid (item 29, Appendix E) to the capscrews (3) and install capscrews (3) through
end caps (4) into valve body (5). Tighten until snug. Do not overtighten.
Attach the control rod linkage to the control handle (8). Install the nut (1) onto ball joint and tighten
Test valve operation by actuating lever on structural control panel a few times.