2-66. SKID-MOUNTED PRETREATMENT ASSEMBLY REPAIR (CONT)
Remove nipple from rear of valve.
Remove conduit locknut from nipple.
Valve V-4 Removal
Remove two nuts, bolts, coupling halves, and gasket from cartridge filter inlet pipe.
Remove nipple and T-pipe. Remove other nipple.
Disassembly and Assembly (All Ball Valves)
Unscrew two union nuts. Remove ball valve.
Remove two end connectors and union nuts from pretreatment assembly.
Remove two O-rings from ball valve.
Remove screw. Remove handle and O-ring.
Remove stem from valve body.
Remove carrier, O-ring, and ball seat.
Remove and discard gasket.
Repeat steps 6 and 8 for other end of ball valve.