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Instruction Manual
D103298X012
Figure 9. Lever/Shaft/Disk Orientation with Valve Closed
A3344
TYPICAL ACTUATOR (FISHER 1052)
ACTUATOR
MOUNTING
STYLE
STYLE A
(PDTO)
RIGHT-
HAND
1
STYLE B
(PDTC)
3
STYLE C
(PDTC)
3
LEFT-
HAND
2
STYLE D
(PDTO)
NOTES:
1
WHEN ONE IS FACING THE INLET, THE ACTUATOR IS TO THE RIGHT OF THE VALVE BODY.
2
WHEN ONE IS FACING THE INLET, THE ACTUATOR IS TO THE LEFT OF THE VALVE BODY.
3
FOR 60‐DEGREE OPERATION WITH PUSH‐DOWN‐TO‐CLOSE ACTION (EXTENDING ACTUATOR ROD CLOSES VALVE), ROTATE ACTUATOR LEVER COUNTERCLOCKWISE SO THAT LEVER INDEX
MARK IS OFFSET 1 SPLINE TOOTH FROM VALVE SHAFT INDEX MARK FOR NPS 2 THROUGH 4 VALVES AND 2 SPLINE TEETH FROM VALVE SHAFT INDEX MARK FOR NPS 6 THROUGH 12 VALVES.
4
CURVED ARROWS IN "VALVE CLOSED' COLUMN INDICATE ROTATION REQUIRED TO OPEN VALVE (COUNTERCLOCKWISE WHEN VIEWED FROM ACTUATOR SIDE OF VALVE).
5
ARROWS IN "MOUNTING POSITION'' COLUMNS INDICATE DIRECTION OF ACTUATOR ROD TRAVEL REQUIRED TO OPEN VALVE.
6. PDTC—PUSH DOWN TO CLOSE; PDTO—PUSH DOWN TO OPEN.
43A5323‐B
B1125‐1
4
VALVE CLOSED
FORWARD
FLOW
FORWARD
FLOW
FORWARD
FLOW
FORWARD
FLOW
ACTUATOR ROD
ACTUATOR ROD
END BEARING
ACTUATOR LEVER
SECTIONAL THROUGH HOUSING
MOUNTING
MOUNTING
5
POSITION 1
POSITION 2
Control-Disk Valve
LEVER INDEX
MARKS (4)
VALVE SHAFT
INDEX MARK
MOUNTING
5
5
POSITION 3
June 2017
MOUNTING
5
POSITION 4
19
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