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95F-27855-10
4. VB-7000 Globe Valves
Actuators & Linkages
4. VB-7000 Series Globe Valves
Actuators & Linkages
Application
Positive positioner pneumatic relay is used to accurately position an actuator stroke
with respect to signal pressure from the controller. It can also be used to change the
effective spring range of an actuator and increase the capacity of a controller.
Features
For accurate positioning of valve and damper actuators, this positioner utilizes a
pilot-operated, relay-type position-sensing mechanism, much more sensitive to ac-
tuator position changes than some competitive“force-balance” positioners.
Model Number Description
AK-42309-500

Note: This model cannot be used with M556, M572, M573, M574 Series actuators.
Use N800-0555 positioner with M556, M573, and M574.
Specifications
Action
Direct (increase in output pressure to actuator with an increase in
pilot pressure from controller).
Pilot input
0…main air pressure, psig.
Output
0…main air pressure, psig.
Construction
Housing

Diaphragm
Neoprene
Start point

Span

Stroke
-
back spring for 7/16…5" stroke.
Supply air pressure

Maximum
30 psig (207 kPa).
Nominal supply
15…20 psig (103…138 kPa)
Environment
Ambient temperature limits
Shipping: -40…160°F (-40…71°C).
Operating: 32…140°F (0…60°C).
Humidity
5…95% R.H., non-condensing.
Locations

Air connection code
Refer to Figure 1
Air connections
“M” and “B”
Barbed for 1/4" O.D. plastic tubing.
“P”
Dual-contoured for 1/4" O.D. and 5/32" O.D. tubing.
Air consumption for sizing
air compressor

Air capacity for sizing air
mains
20 scim (5.5 mL/s).
Flow capacity

Mounting linkage

MK-2690 actuator and the following actuator series; MK-3000,
MK-4400, MK-4600, MK-4700, MK-4800, MK-6600, MK-6800, MK-
6900, MK-7100, MK-8800 and MK-8900.
Dimensions
2½ H x 4½ W x 3 D" (64 x 114 x 76 mm).
Regulatory Compliance
RoHS and REACh
AK-42309-500 Positive
Positioning Relay
AK-42309-500
Positive Positioning Relay
MORE INFO
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for more information.
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