Leslie Controls DKLO D1 & D4 .5-4 125/250 class User Manual
Illustration index
DKLO D1 & D4 CONTROL VALVE
Sizes ½” through 4” ANSI CLASS 125/250
TABLE OF CONTENTS
INTRODUCTION.......................................................................................................................................2
OPERATING PRINCIPLE.........................................................................................................................4
INSTALLATION .........................................................................................................................................4
START-UP....................................................................................................................................................4
TROUBLESHOOTING ..............................................................................................................................4
MAINTENANCE .........................................................................................................................................6
REMOVAL
OF
ACTUATOR
FROM
VALVE
BODY
ASSEMBLY.......................................................6
REVERSE
ACTING
PNEUMATIC
ACTUATOR ...................................................................................6
DIRECT
ACTING
PNEUMATIC
ACTUATOR.......................................................................................6
DISASSEMBLY
OF
VALVE
BODY........................................................................................................6
DISASSEMBLY
OF
ACTUATOR ...........................................................................................................6
RE-ASSEMBLY
OF
ACTUATOR ...........................................................................................................7
LAPPING
PLUG
INTO
SEAT ..................................................................................................................7
PACKING
REPLACEMENT ....................................................................................................................7
RE-ASSEMBLY
OF
VALVE
BODY
(D1) ...............................................................................................7
RE-ASSEMBLY
OF
VAVLE
BODY
(D4) ...............................................................................................7
REPLACING
ACTUATOR
ON
VALVE
BODY-PNEUMATIC .............................................................7
REVERSE
ACTING ..................................................................................................................................7
DIRECT
ACTING .....................................................................................................................................7
ACTUATOR
ADJUSTMENT
–
PNEUMATIC ........................................................................................7
REVERSE
ACTING ..................................................................................................................................7
DIRECT
ACTING .....................................................................................................................................7
PARTS LIST
.............................................................................................................................................................................
8
ILLUSTRATION INDEX
FIGURE 1 - TYPICAL STEAM INSTALLATION.......................................................................................................................4
FIGURE 2 - VALVE BODY ASSEMBLY D1 1"-2".....................................................................................................................9
FIGURE 3 - VALVE BODY ASSEMBLY D1 - 1/2" - 3/4"...........................................................................................................9
FIGURE 4 - VALVE BODY ASSEMBLY D4.............................................................................................................................10
FIGURE 5 - ACTUATOR ASSEMBLY D1&D4.........................................................................................................................11
FIGURE 6 - PISTON DIAPHRAGM ASSEMBLY.....................................................................................................................12
12501 Telecom Drive, Tampa Florida 33637
Installation, Operating and
Maintenance Instructions
Supplement
10/5.5.2
Rev. 1