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SUBMITTAL SHEETS
Pneumatic Damper Actuator
MP913
MP913
Provides proportional control of
variable volume dampers in small
high velocity mixing boxes.
Replacement devices are available
for Johnson and Robertshaw
devices. Suitable for direct
replacement only, do not attempt to
replace larger damper actuators
with this unit.
SPECIFICATIONS
Actuator Type .......................................Damper
Dimensions, Approximate ....................2 5/8 in. high (add 3/4 in. for
shaft ) x 2 1/4 in. diameter
(67 mm high (add 19 mm for
shaft) x 57 mm diameter)
Actuator Force ......................................Low
Fail Safe Mode .....................................Spring Return
Air Connections ....................................Barbed fitting for 1/4 in. O.D.
plastic tubing
Stroke ...................................................1 in. (25 mm)
Diaphragm Effective Area ....................2.2 sq in. (14 sq cm)
Temperature Range ..............................50 F to 140 F (10 C to 60 C)
Maximum Operating Pressure .............30 psi (207 kPa)
Humidity Range ....................................5 to 95% RH
ACCESSORIES
27520C—Push Rod (5/16 in. dia., 12 in. length)
27520G—Push Rod (5/16 in. dia., 24 in. length)
27520K—Push Rod (5/16 in. dia., 36 in. length)
27520L—Push Rod (5/16 in. dia., 48 in. length)
315321—Crankarm Balljoint (with 1/4 in male threads), fits 5/16 in.
diameter pushrod
315781—Motor shaft balljoint with 3/8 - 16 UNC female threads, fits
5/16 in. diameter pushrods.
FEATURES
• Compact in size.
• Neoprene rolling diaphragm.
• The MP913 Operator can be used with or without a
crankarm.