Actuator Selection; Pneumatic Actuator; Electric Actuator - Johnson Controls VG8000V Series Quick Start Manual

4

Actuator Selection

Flow through the valve is dependent on the position of the plug, as indicated in the tables below. The
function of the actuator / valve combination is dependent upon the action of the actuator and the type of
valve used.

Pneumatic actuator

Valve type
E
2-way PDTC
VG82..V1N
E
L
3-way mixing
VG88.. V1N

Electric actuator

Valve type
E
2-way PDTC (NO)
VG82...
E
L
3-way mixing
VG88...
Direct Acting pneumatic actuators
MP-822xxxx0 and PA-2xx0-3x1x
Air pressure
extends stem
Control mode
VA7810-xxx-12, VA1225-GGA-1,
RA-3xxx-7x2x, RA-3100-8x2x,
FA-2xxx-7x1x and FA-33xx-741x
Actuator extends
stem
E = Equal percentage control characteristic
L = Linear control characteristic
Reverse Acting pneumatic actuators
Spring-return
retracts stem retracts stem
Power fail position (spring return
VA7820-xxx-12
VA1220-GGA-1
Actuator retracts
stem retracts stem
MP-832xxxx0 and PA-2xx0-3x2x
Air pressure Spring-return
extends stem
only)
VA7830-xxx-12
VA1420-GGA-1
spring force spring force
extends stem
= Flow
= No flow
VG8000V