Brochure

MK-71xx Series, MK4-71xx

Specifications

Accessories

Construction

Housing Die cast aluminum.

Diaphragm Replaceable beaded molded neoprene.

Stroke Nominal 4-1/2 in. (114 mm), adjustable 4 to 5 in. (102 to 127 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 160qF (-40 to 71qC).

Operating -20 to 160qF (-29 to 71qC).

Air connections 1/8 in. FNPT.

Mounting In any position.

Dimensions 17-5/8 H x 7-3/4 W x 7-5/8 D in. (448 x 197 x 194 mm).

Model No. Description

AK-42309-500 Positive positioner and linkage.

AM-301 90 degree mounting bracket for floor mounting.

AM-530

Required to connect damper actuator to damper.

Crank arm for 1/2 in. diameter damper shaft. Holes for 4-1/2 in. stroke.

AM-532 Bolt-on frame lug and damper blade clip kit.

AM-538 Actuator brace kit.

AM-542 Rod end connector for 5/16 in. (10 mm) rod.

NOTE: Maximum length of 5/16 in. (8 mm) rod which can be used with AM-542, 15 in. (381 mm).

AM-543 Actuator shaft extension.

TOOL-095-1 Pneumatic calibration tool kit.

Maintenance Parts

PND-90 High temperature diaphragm.

PND-202 Diaphragm.

PND-203 Lower housing.

PND-245-103 3 to 8 psig spring.

PND-245-108 8 to 13 psig spring.