Schneider Electric MK-3101 Catalog Page
MK-3xxx Series, MK4-3xxx Series
Model Chart (Continued)
Maximum Force
Return
Stroke
21
Nominal
Stroke
3-1/2 (89),
adjustable
2 to 4
(51 to 102)
3-1/2 (89),
adjustable
2 to 4
(51 to 102)
a
Base d on
1.5 psi
(10 kPa)
Pressure
to
Actuator
lb
(N)
52
(231)
12
(53)
52
(231)
(103 kPa)
Nominal Operating
Model No.
MK-3121
MK4-3121
MK-3141 3 to 13 21 to 90 3 non-adj.
MK-3821 8 to 13
MK4-3821
a
b
c
d
e
e
e
Factory setting required for published operating range.
Force and torques based on factory set stroke and starting pressure.
Nominal torque for actuators without positive positioner is based on 1.5 psi pressure change at the actuator.
Adjust pressure redu cing valve so that listed pressures are available at the actuator.
Factory installed positive positioner (AK-42309-500) start point adjustable 2 to 10 psi with span adjustable 2 to 10 psi.
Range
psig kPa psig kPa in. (mm)
8 to 13 55 to 90 8 ±155 ±7
55 to 90 8 ±155 ±1
8 to 13
Starting Pressure
non-adj.
15 psi
Supply
Dual
Press.
System
lb
(N)
4
(18)
4
(18)
Power Stroke
15 psi
(103 kPa)
Supply
Single
Press.
System
lb
(N)
16
(71)
16
(71)
b
d
20 psi
(138 kPa)
Supply
Single or
Press.
System
15 psi
(103 kPa)
Supply
d
Dual
Press.
System
lb-in.
(N-m)
Dual
lb
(N)
56
(249)7(0.79)
56
(249)7(0.79)
Nominal Torque
Proportional Control
15 psi
(103 kPa)
Supply
Single
Press.
System
lb-in.
(N-m)
(2.37)21(2.37)
(3.16)91(10.28)
(2.37)
(2.37)
(3.16)91(10.28)
21
28
21
21
28
d
(138 kPa)
Single or
System
c
b
20 psi
Supply
Dual
Press.
lb-in.
(N-m)
21
(2.37)
d
Specifications
Construction
Housing Die cast aluminum.
Diaphragm Beaded molded neoprene.
Stroke Refer to Model Chart.
Nominal Damper Area Actuator sizing should be done in accordance with damper manufacturer’s specifications.
Start point Adjustable on most models ±1 psi, refer to Model C hart.
Spring Retracts actuator shaft on loss of air pressure.
Maximum air pressure 30 psig (207 kPa).
Ambient temperature limits
Shipping -40 to 160°F (-40 to 71°C).
Operating -20 to 160°F (-29 to 71°C).
Air connections 1/8 in. FNPT.
Mounting
Dimensions
MK-3100, MK4-3100 Series 12 L x 5-7/8 W x 5-1/2 D in. (305 x 149 x 140 mm).
MK-3800 Series 20-3/16 L x 7-1/4 W x 6-1/2 D in. (513 x 184 x 165 mm).
In any position. Mounting bracket and connector for 5/16 in. (8 mm) diameter push rod included with
actuator.
8
© Copyright 2008 TAC. All Rights Reserved. F-27383-2
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