Leslie Controls CONTROL VALVES SINGLE PORTED DOS User Manual
Leslie Controls Equipment

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