Application Guide

KMC Actuators Selection Guide 1 AG150807B
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KMC Actuators
Selection Guide
Contents
Actuator Torque Selection .............................. 1
Important Notices.......................................... 1
Introduction ................................................... 2
Electronic vs. Pneumatic ............................. 2
Fail-Safe vs. Non-Fail-Safe ........................... 2
Input Types ................................................. 2
KMC Actuator Selection Chart ....................... 3
KMC Actuator Replacement Cross-Reference 4
Specifications, design, and operation are subject to change without notice.
Actuator Torque Selection
Damper manufacturers should provide information
about the required minimum actuator torque. If
that information is not available, use the following
general guidelines to calculate the required torque.
(Square feet for a rectangular duct can be calculated
by multiplying the height and width in inches and
then dividing by 144.)
After minimum torque is known, see the actuator
information to select the appropriate model.
Damper Type
Opposed Blades Without Seals
Parallel Blades Without Seals
Opposed Blades With Seals
Parallel Blades With Seals
Up to 1000 FPM
3 in-lb. per square foot
4 in-lb. per square foot
5 in-lb. per square foot
7 in-lb. per square foot
1000 to 2500 FPM
4.5 in-lb. per square foot
6 in-lb. per square foot
7.5 in-lb. per square foot
10.5 in-lb. per square foot
2500 to 3000 FPM
6 in-lb. per square foot
8 in-lb. per square foot
10 in-lb. per square foot
14 in-lb. per square foot