Data Sheet for Product

ManualsBrandsSiemens ManualsDampers#3 Pneumatic Damper Actuator w/ Bracket & Clevis, Fixed Mount (3 to 7 psi)

Siemens Industry, Inc.

POWERS™ Controls

Technical Instructions

Document No. 155-146P25

AP 331-1

November 10, 2021

No. 3 Pneumatic Damper Actuator

331-4312 Pivot Mounting

331-4313 Fixed Mounting

331-4311 Extended Shaft Mounting

Description

The POWERS Controls No. 3 Pneumatic Damper Actuator is a compact, totally

enclosed, rolling diaphragm-type actuator designed for modulating or two-position

actuation of dampers or air valves.

Features

• All metal body construction

• Totally enclosed to protect internal parts

• Variety of spring ranges for sequencing

• Fixed or pivot mounting models

• Pivot mounting for extended shaft

• Positioning relay (optional)

• Variety of mounting/linkage kits for special applications

• Threaded shaft for easy mounting to accessory thread

Product Numbers

See Table 1.

Application

Typical applications are for control of mixing box dampers or air valves, and damper

control for unit ventilators, unit conditioners and other HVAC applications.

These compact, totally enclosed actuators are easily installed either directly within the

mixing box or unit enclosure, or externally, as required for each application.

Summary of content (8 pages)

PAGE 1
Technical Instructions Document No. 155-146P25 AP 331-1 November 10, 2021 POWERS™ Controls No. 3 Pneumatic Damper Actuator 331-4312 Pivot Mounting 331-4313 Fixed Mounting 331-4311 Extended Shaft Mounting Description The POWERS Controls No. 3 Pneumatic Damper Actuator is a compact, totally enclosed, rolling diaphragm-type actuator designed for modulating or two-position actuation of dampers or air valves.
PAGE 2
POWERS™ Controls No. 3 Pneumatic Damper Actuator Technical Instructions Document Number 155-146P25 November 10, 2021 Table 1. Product Numbers for No. 3 Pneumatic Damper Actuators. Part No.
PAGE 3
POWERS™ Controls No.
PAGE 4
POWERS™ Controls No. 3 Pneumatic Damper Actuator Technical Instructions Document Number 155-146P25 November 10, 2021 Table 3. Thrust Torque Ratings. Maximum Thrust lb. (N) Nominal Spring Range Torque Rating* lb-in (Nm) Spring Return 25 psi (No Stroke) (172 kPa) 0 psig (0 kPa) Full Stroke Forward Gradual Operation 2-Position Operation 15 psi (103 kPa) 18 psi (124 kPa) 25 psi (172 kPa) 10 (1.1) 20.2 (2.3) 20.2 (2.3) 20.2 (2.3) 40 (178) 10 (1.1) 33.6 (3.8) 33.6 (3.8) 33.6 (3.
PAGE 5
POWERS™ Controls No. 3 Pneumatic Damper Actuator Technical Instructions Document Number 155-146P25 November 10, 2021 Installation, Continued Table 3. Damper Blade Rotation. Actuator Position in Relation to Damper Shaft Crank Position in Relation to Damper Shaft Rotation of Damper Blade on Increase of Pressure Left Above Clockwise Below Counterclockwise Above Counterclockwise Below Clockwise Right Figure 1. Mounting Plate and Extended Shaft Mounting.
PAGE 6
POWERS™ Controls No. 3 Pneumatic Damper Actuator Technical Instructions Document Number 155-146P25 November 10, 2021 Installation, Continued Extended Shaft Mounting, Fixed Actuator For Actuators 331-4314, 331-4514, 331-4814 order Linkage Kit 331-958. For Actuators 331-4313, 331-4513, 331-4813, order Clevis 333-207 and Linkage Kit 331-958. 1. Determine the direction of the damper shaft rotation (clockwise or counterclockwise) on an increase in pressure to the actuator. 2.
PAGE 7
POWERS™ Controls No. 3 Pneumatic Damper Actuator Technical Instructions Document Number 155-146P25 November 10, 2021 Installation, Continued Table 4. Crank Radius Connection. Dimensions Application Crank Radius Connection Crank Hole Number X Y 7-7/8 inch (200 mm) 1-3/16 inch (30 mm) 2-3/8 inch (60 mm) stroke 90 ° Rotation 1-11/16 inch (43 mm) 6 7-7/8 inch (200 mm) 2-1/16 inch (52 mm) 2-3/8 inch (60 mm) stroke 60 ° Rotation 2-3/8 inch (60 mm) 5 NOTE: Crank Radius Holes No.
PAGE 8
Technical Instructions Document Number 155-146P25 November 10, 2021 POWERS™ Controls No. 3 Pneumatic Damper Actuator Dimensions, Continued Figure 6. Extended Shaft Mounting Bracket Dimensions. Dimensions are in Inches (Millimeters). Figure 7. No. 3 Actuator with Pivot Mounting Bracket Dimensions. Dimensions are in Inches (Millimeters). Figure 8. No. 3 Actuator with the RL 147 Positioning Relay Mounted Dimensions. Dimensions in Inches (Millimeters).