Brochure

MK-44xx Series, MK4-44xx Series
Damper Actuators, Proportional
Model Chart
For proportional pneumatic actuator with 11 sq. in.
(71 cm
2
) effective area used to control damper and
air valves in heating, ventilating, and air
conditioning systems.
Features:
• Rugged cast aluminum body.
• Special linkage permits easy adjustment of stroke to suit
various applications.
• Hesitation and non-hesitation models available.
Model No.
Nominal
Operating
Range
Starting
Pressure
Adjustable
Maximum Force
a
a
Force and torques on based on factory set stroke and starting pressure.
Nominal Torque
b
Proportional Control
a
b
Nominal torque for actuators is based on 1.5 psi (10 kPa) pressure change at the actuator.
Return
Stroke
Power Stroke
Based on
1.5 psi
Pressure
to Actuator
15 psi
Supply
Dual
Press.
System
15 psi
Supply
Single
Press.
System
c
c
Adjust pressure reducing valve so that listed pressures are available at the actuator. MK-4421 requires that 15 psi (103 kPa) be available to actuator.
MK-4461 requires that 20 psi (138 kPa) be available to actuator.
20 psi
Supply
Single or
Dual Press.
System
c
15 psi
Supply
Dual
Press.
System
15 psi
Supply
Single
Press.
System
c
20 psi
Supply
Single or
Dual Press.
System
c
psig psig lb lb lb lb lb-in. lb-in. lb-in.
MK-4401
MK4-4401
d
d
Factory installed positive positioner (AK-42309-500) start point adjustable 2 to 10 psi with span adjustable 2 to 10 psi.
3 to 8 3 r1 8.25 30.25 38.5 66 7.9 7.9 7.9
MK-4411
MK4-4411
d
5 to 10 5 r1 19.25 19.25 27.5 55 7.9 7.9 7.9
MK-4421
MK4-4421
d
8 to 13 8 r1 35.75 2.75 11 38.5 2.6 7.9 7.9
MK-4451
MK4-4451
d
3 to 6,
9to12
3 to 6 8.25
8.25 16.5 44 7.9 7.9
7.9
MK-4461
MK4-4461
d
3 to 6,
11 to 17
0016.500
MK
-
44
x
Series
,
MK4-4
4
Series
F-27383-1 © Copyright 2006 TAC. All Rights Reserved. 51