Schneider Electric MK-4401 Catalog Page
MK-44xx Series
Damper Actuators, Proportional
For proportional pneumatic actuator with 11 sq. in.
(71 cm
air valves in heating, ventilating, and air
conditioning systems.
Features:
• Rugged cast aluminum body.
• Special linkage permits easy adjustment of stroke to suit
• Hesitation and non-hesitation models available.
2
) effective area used to control damper and
various applications.
Model Chart
Model No.
Nominal
Operating
Range
Starting
Pressure
Adjustable
Return
Stroke
Based on
1.5 psi
Pressure
to Actuator
Maximum Force
15 psi
Supply
Dual
Press.
System
a
Power Stroke
15 psi
Supply
Single
Press.
c
System
20 psi
Supply
Single or
Dual Press.
System
c
Nominal Torque
Proportional Control
15 psi
Supply
Dual
Press.
System
15 psi
Supply
Single
Press.
System
Dual Pres s.
c
b
a
20 psi
Supply
Single or
System
c
psig psig lb lb lb lb lb-in. lb-in. lb-in.
MK-4401 3 to 8 3
MK-4411 5 to 10 5
MK-4421 8 to 13 8
MK-4451
a
Force and torques on based on factory set stroke and starting pressure.
b
Nominal torque for actuators is based on 1.5 psi (10 kPa) pressure change at the actuator.
c
Adjust pressure redu cing valve so that listed pressures are available at the actuator. MK-4421 requires that 15 psi (103 kPa) be available to actuator.
3 to 6,
9to12
±1 8.25 30.25 38.5 66 7.9 7.9 7.9
±1 19.25 19.25 27.5 55 7.9 7.9 7.9
±1 35.75 2.75 11 38.5 2.6 7.9 7.9
3 to 6 8.25 8.25 16.5 44 7.9 7.9 7.9
10
© Copyright 2008 TAC. All Rights Reserved. F-27383-2
MK-44xx Series
Specifications
Construction
Housing Die cast aluminum.
Diaphragm Replaceable beaded molded neoprene (Part number PNV-002).
Stroke
Linkage Adjustable 1/2 to 3 in. (13 to 76 mm); factory set for 2 in. (51 mm).
Diaphragm Factory set for 1 in. (25 mm).
Nominal Damper Area Actuator sizing should be done in accordance with damper manufacturer’s specifications.
Start point Adjustable. Refer to Description Model Chart.
Spring Retracts actuator crank arm 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 7-7/16 H x 5-3/4 W x 4-7/8 D in. (189 x 146 x 124 mm).
Accessories
Model No. Description
AK-42309-500 Positive positioning relay.
AM-111 Crank arm for 5/16 in. diameter damper shaft.
AM-112 Crank arm for 3/8 in. diameter damper shaft.
AM-113 Crank arm for 1/2 in. diameter damper shaft.
AM-115 Crank arm for 7/16 in. diameter damper shaft.
AM-122 Linkage connector straight type.
AM-123 Damper clip.
AM-125 5/16 x 20 in. damper rod.
AM-125-048 5/16 x 48 in. damper rod.
AM-132 Ball joint connector.
AM-161-3 Damper linkage kit (AM-173 crank arm an d AM-132 connector).
AM-743 Linkage kit for M-693 Series replacemen t.
TOOL-095-1 Pneumatic calibration tool kit.
Maintenance Parts
PNV-002 Diaphragm.
PNV-251 High temperature diaphragm.
PND-145-104 Black, 3 to 8 psi or 5 to 10 psi spring.
PND-145-107 Blue, 8 to 13 psi or 6 to 11 psi spring.
In any position. Mounting bracket, linkage, and connector for 5/16 in. (8 mm) diameter push rod
assembled to actuator.
F-27383-2 © Copyright 2008 TAC. All Rights Reserved. 11
Loading...