Honeywell MP516 Catalog Page

Pneumatic Damper Actuators

ALTERNATE POSITION
FOR SUPPLY AIR
CONNECTION

TOP VIEW

5 (27)

2-13/16

(71)

SIDE VIEW

1/8 (3) NPT AIR
CONNECTION (2)

3/4-16 MOUNTING STUD

5/8 (16)

9/32 (7)

7/16 (11)

4-3/8
(111)

2-1/2

(64)

2-1/2 (64)

MAX.

TRAVEL

2-1/16 (52)

MIN. TRAVEL

M27104

MP516 Pneumatic Unit Ventilator Damper Actuator

Used to control the damper on unit ventilators. Can be adapted to
various unit ventilator control cycles. Replacement devices are
available for Johnson, Powers, Robertshaw, Barber-Colman, and
older Honeywell unit ventilator damper actuators.

• Constructed of strong zinc die castings.

• Hesitation feature available for unit ventilator cycles requiring a
minimum percentage of outdoor air.

Dimensions in inches (millimeters)

Actuator Type: Damper
Actuator Force: Medium
Fail Safe Mode: Spring Return
Air Connections: 1/8 in. NPT
Stroke: 2-1/8 in. to 2-1/2 in. (54 mm to 63 mm)
Diaphragm Effective Area: 11 sq in. (71 sq cm)
Temperature Range: -20 F to +160 F (-29 C to +71 C)
Maximum Operating Pressure: 25 psi (172 kPa)
Humidity Range: 5 to 95% RH

Accessories:

26025B-Damper crank arm for 3/8 in. (9.5 mm) diameter axle.

Elongated slot for linkage connection. Slot scaled for 40-50-60-75-90
degrees.

27174B-Damper crank arm for 7/16 in. (11.1 mm) diameter axle.

Elongated slot for linkage connection. Slot scaled for 40-50-60-75-90
degrees.

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)
309389J-Mounting Bracket and Linkage
312867C-Damper Crank Arm for 1/2 in. (12.7mm) diameter axle.

Elongated slot for linkage connection. Slot scaled for 45-60-75-90
degrees

315321-Crankarm Balljoint (with 1/4 in male threads), fits 5/16 in.

diameter pushrod

Product Number

Spring Range

Comments(psi) (kPa)

MP516A1087/U 3 psi to 12 psi 21 kPa to 83 kPa The lever arm moves to the desired minimum position as air pressure increases from 0 to 3

psi, hesitates from 3 to 8 psi, and completes its stroke from 8-12 psi.

MP516A1095/U 4 psi to 8 psi 28 kPa to 55 kPa No hesitation.

MP516A1103/U 5 psi to 12 psi 34 kPa to 83 kPa No hesitation.

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