Brochure
MK-3xxx Series, MK4-3xxx Series
48
© Copyright 2006 TAC. All Rights Reserved. F-27383-1
Pneumatic Damper Actuators
Model Chart
Proportional pneumatic actuator with 8 in.
2
(52 cm
2
) effective area used to control dampers,
mixing boxes, air valves, etc., in heating,
ventilating, and air conditioning systems.
Features:
• Rugged cast aluminum bodies.
• Long lasting rolling diaphragm.
• Provisions for adjustable stroke-stop.
Model No.
Nominal
Operating
Range
Starting Pressure
Nominal
Stroke
a
a
Factory setting required for published operating range.
Maximum Force
b
b
Force and torques based on factory set stroke and starting pressure.
Nominal Torque
c
Proportional Control
b
c
Nominal torque for actuators without positive positioner is based on 1.5 psi pressure change at the actuator.
Return
Stroke
Power Stroke
Based on
1.5 psi
(10 kPa)
Pressure
to
Actuator
15 psi
(103 kPa)
Supply
Dual
Press.
System
15 psi
(103 kPa)
Supply
Single
Press.
System
d
d
Adjust pressure reducing valve so that listed pressures are available at the actuator.
20 psi
(138 kPa)
Supply
Single or
Dual
Press.
System
d
15 psi
(103 kPa)
Supply
Dual
Press.
System
15 psi
(103 kPa)
Supply
Single
Press.
System
d
20 psi
(138 kPa)
Supply
Single or
Dual
Press.
System
d
psig kPa psig kPa in. (mm)
lb
(N)
lb
(N)
lb
(N)
lb
(N)
lb-in.
(N-m)
lb-in.
(N-m)
lb-in.
(N-m)
MK-3101 3 to 8 21 to 55 3r121r7
3-1/2 (89),
adjustable
2 to 4
(51 to 102)
12
(53)
44
(196)
56
(249)
96
(427)
21
(2.37)
21
(2.37)
21
(2.37)
MK-3111 5 to 10 34 to 69 5r134r7
28
(125)
28
(125)
40
(178)
80
(356)
MK
-
3
xxx
Series,
MK4-3xx
x
Series
MK-31xx Series
MK-38xx Series