Brochure

F-27855-10140
7. VB-8/9000 Series
Actuators and Linkages
Pneumatic Positive Positioning
Relay for VB-7/8/9xxx
Positive Positioning Relay
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
actuator 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, and MK-12000 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 to main air pressure, psig.
Output
0 to main air pressure, psig.
Construction
Housing

Diaphragm
Neoprene
Start point

Span

Stroke

spring for 7/16 to 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 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 (air
compressor sizing)

Air capacity for sizing
air mains
20 scim (5.5 mL/s).
Flow capacity

Mounting linkage

following actuator series; MK-6600, MK-6800, MK-6900, MK-8800
and MK-8900.
Dimensions
2½ H x 4½ W x 3 D" (64 x 114 x 76 mm).
MORE INFO
Scan the QR code
or visit the link below
for more information.
Visit:
http://goo.gl/LJCLEb
7. VB-8/9000 Series
Actuators and Linkages