Leslie Controls CONTROL VALVES SINGLE PORTED DOS - Manual

Installation, Operation
and Maintenance
10/1.5.1
Rev. 0
CONTROL VALVES
SINGLE PORTED
CLASSES DL, DDL, DOS, DDOS
NOTE 1: Where noise is a factor follows recommendations for piping and fittings per 5/0.3.1.
TABLE OF CONTENTS
INSTALLATION
.............................................................................................................................. 2
V ALVE P OSITION ......................................................................................................................................... 2
P ROBLEM P REVENTING P ROCEDURES .......................................................................................................... 2
OPERATION
....................................................................................................................................... 2
MAINTENANCE
.............................................................................................................................. 3
R EPLACING V ALVE P LUG S TEM P ACKING ................................................................................................... 3
D ISMANTLING .............................................................................................................................................. 3
T O I NSTALL A C OMPLETE S ET OF P ACKING ................................................................................................. 3
R EMOVING A CTUATOR FROM V ALVE B ODY A SSEMBLY .............................................................................. 3
V ALVES F ITTED WITH C AGE T YPE T RIM (O IN C LASS ) ................................................................................ 4
R EPLACING S EAT R ING ( S )/I NSERTS ............................................................................................................. 4
T O I NSTALL S EAT R ING ( S )/I NSERTS ............................................................................................................. 4
I NSPECTION , C LEANING , R EWORKING OR R EPLACEMENT OF P ARTS ............................................................ 4
O RDERING P ARTS ........................................................................................................................................ 4
C LEANING .................................................................................................................................................... 4
L APPING IN V ALVE P LUG AND S EAT R ING ( S )/I NSERT .................................................................................. 5
C ONTROL V ALVES F ITTED WITH C AGE T YPE T RIM ..................................................................................... 5
R EASSEMBLY - S INGLE P ORTED C ONTROL V ALVES (DL T YPE ) ................................................................... 5
C AGE T YPE T RIM (DOS T YPE C TRIM P ARTS ) ( SEE F IG . 3)........................................................................... 5
A DJUSTING A CTUATOR S PRING P RELOAD (S TARTING P RESSURE )............................................................... 6
S INGLE P ORTED U NBALANCED C ONTROL V ALVES (DL, DOS T YPES ) ........................................................ 6
S INGLE P ORTED C ONTROL V ALVES (DDL, DDOS T YPES ).......................................................................... 6
A DJUSTED C ONTROL V ALVE FOR R ATED T RAVEL ....................................................................................... 6
S INGLE P ORTED U NBALANCED (DL, DOS T YPES ) ...................................................................................... 6
S INGLE P ORTED U NBALANCED C ONTROL V ALVES (DDL, DDOS T YPES ) .................................................. 7
ACTUATOR MAINTENANCE REPLACING DIAPHRAGMS, STEM
SEALS, ETC.
....................................................................................................................................... 7
R EASSEMBLY ............................................................................................................................................... 7
A LL A CTUATORS ......................................................................................................................................... 8
T O C HANGE V ALVE A CTION FROM N ORMALLY O PEN TO N ORMALLY C LOSED OR V ICE -V ERSA ................ 8
12501 Telecom Drive, Tampa Florida 33637