Welcome to Standard-DD Damper Drives, LLCWelcome to Standard-DD Damper Drives, LLCWelcome to Standard-DD Damper Drives, LLCWelcome to Standard-DD Damper Drives, LLC

Your Path to Performance & Peace of Mind.  

High Performance Damper Drives for Precision Damper Control


STANDARD-DD Printable Brochure (pdf)


Drive Torque Output Chart (pdf)


STANDARD-DD Field Service Brochure (pdf)


Standard DD Damper Drives Power Point (pptx)




About Us

  • High Performance Damper Drives for Precision Damper Control

  • "Drop In Place" for Easy Retrofit Solutions of Existing Damper Drives

  • Wide Range of Torque Ratings available in seven (7) sizes from 90 to 10,415 ft. lbs. (122 TO 14,312 Nm)

  • Quarter-turn (90 deg.) Rotation is standard.  Other degrees of rotation are available.  
  • Conventional or Smart Digital Positioner with HART Communication, Fieldbus, or Profibus options.

  • Control Options for Fail-Safe or Fail-in-Place on loss of Input Signal or Air Supply
  • Wide Range of Options available:  NEMA 4X (IP66) Enclosures, Position Transmitters, Alarm / Travel Limit Switches, Air Failure Lock-up, Air Reservoir for Fail OPEN / CLOSE, Manual Operation shifts easy from Automatic to Manual Control
  • Suitable for High Temperature Environments to 300°F (149°C)

  • Linear Stroke Cylinder Drives are also available
  • The Right Choice for New Installations:  The Perfect Solution for Retrofit.


Electric Power Utilities


  • Electric Power Utilities 
  • Oil & Gas Refineries
  • Chemical / Petrochemical
  • Steel, Aluminum & other metals

Oil & Gas Refineries


  • Pulp & Paper Mills
  • Pharmaceuticals
  • Food & Beverage
  • Water & Waste Water Treatment

Steel Mill


  • Co-Generation
  • Fluidized Bed Boilers
  • Glass Manufacturing
  • Cement & Lime
  • Ships


STANDARD-DD Damper Drive Applications Flow Modulation of Combustion Air & Flue Gas


• Forced Draft (FD) Fan

• Induced Draft (ID) Fan

• Primary Air (PA) Fan

• Gas Recirculating (GR) Fan

• Booster Fan

• Seal Air Fan

• Primary Air to Mills

• Mill Hot Air Control

• Mill Tempering (Cold) Air

• Mill Velocity/Volume Air

• Mill Shut-off

• Mill Burner Shut-off

• Mill Seal Air

• CE Windbox Fuel & Aux Air



• CE Burner Nozzle Tilt Drives

• SOFA BOX Dampers

• SOFA BOX Nozzle Tilt

• Secondary Air Windbox

• Cyclone Burner Secondary Air

• Cyclone Burner Primary Air

• Air Heater Inlet

• Air Heater Outlet

• Air Heater Bypass

• Superheat Pass Dampers

• Reheat Pass Dampers

• Main Pass Dampers

• Bypass Dampers

• Gas Recirc Tempering

• Gas Recirc Bypass

• Baghouse Cell Isolation

• SCR System Dampers

• Scrubber Module Isolation

• Flop Gate Coal Diverter

• Bottom Ash Hopper

• Fly Ash Handling Systems

• Oxidation System Dampers

• Fluid drive Coupling Control:

F.D., I.D., P.A., G.R. Fans,

Boiler Feed Pumps

• Turbine Governors

• Stoker Speed Control

• Gas Turbine Exhaust Bypass



STANDARD-DD High Performance Damper Drives are the solution for Control of Combustion Air & Flue Gas thru a boiler.

STANDARD-DD is dedicated to assist our customers in providing resolutions.

Engineered for precise, accurate, dependable control for a wide variety of damper applications.

Rotary vane actuator - one moving part

  • Most reliable, efficient actuator design

Linear constant torque output for full 90° stroke

  • Output torques range from 90 ft. lbs. to 10,416 ft. lbs. (122 ot 14,312 Nm).
  • Master-Slave actuator option provides torque to 28,624 ft. lbs. (38,834 Nm).

Compact Rugged Design

  • Maximum environmental protection.

Wide range of input control & feedback options

  • Characterizable high-gain positioner with versatile signal conditions to interface with customers existing demand signal & feedback signals.

Durable corrosion resistant internal & external finish

High immunity to shock & vibration.

Damper Drives provide 100% duty cycle rating of 3600 starts per hour without overheating.

High Speed stroke times of three (3) seconds is available for full damper travel

No internal levers or gearing

  • Eliminates dead-band for fast response & sensitive control.

No dangerous external moving parts

  • Safe for operating & maintenance personnel

Designed for maintenance-free operation in harsh high temperature environments up to 300°F (149°C).


Three (3) years of (2) million cycles (4 million strokes), whichever occurs first, after date of shipment.

Inside Story



  1. Dual Opposed Lip Seals - Provides effective, air assisted seal for low friction & long, maintenance-free life.
  2. Steel Travel Stops - On both sides of steel vane
  3. Corrosion-Resistant Finish - Durable TGIC-Polyester Epoxy powder-coat finish inside & outside of actuator surfaces
  4. Steel Side-Plate Seal Retainer - Located on both sides of steel vane.  Provides the strength to assure accurate Open and Close stop positions
  5. Integral Namur Manifold - For direct-mount solenoid valve, eliminating fittings & tubing
  6. Alloy Steel Drive Shaft - High tensile output shafts for strength and durability.  ENP finish for corrosion-resistance.  Wrench Manual Override and Vane Position Indicator
  7. Integral Vane / Shaft Casting - Cast as a single piece; only one moving part.  Eliminates all "slop", hysteresis or lost motion
  8. Stainless Steel Seal Expanders- Located on both sides of steel vane.  Ensures long-term lip seal-to-case contact.  Excellent in both high-cycle and low-cycle applications.


9. Stainless Steel Bolting Hardware - For long-term corrosion resistance

10. Bi-directional Travel Stops - 80° to 100° standard adjustments are stainless steel.  Extended travel stops available for reduced travel as low as 30° rotation

11. Large Air Inlet Ports on both sides of Actuator for Fast Operation- Provides for high-cycle speed of operation with no restrictions
12. Integral Namur Accessory Mount on outside top of Actuator Surface meets VDI/VDE 3485 accessory mount standards for positioners, limit switches and indicators

Drive Control Options

Conventional Positioner

  • Standard Linear Cam with square or square root cams available
  • Input Signals - 3-15, 3-27, 6-30 PSI / 4-20 mAdc / 1 to 5 VDC / 0 to 10 VDC / -10 to +10 VDC

Smart "Intelligent" Digital Positioner

  • 4-20 mAdc Signal
  • HART Protocol
  • Analog / Digital Communications
  • Microprocessor based
  • Autostroke calibration with diagnostics
  • Configured via local pushbuttons, PC with IBIS Software & FSK modem or handheld programmer
  • Profibus
  • Foundation Fieldbus
  • Explosion-Proof Positioner option
  • Low air bleed 0.0003 SCFM in Null state
  • Remote Mounted Positioner
  • CE Conformity

Feedback Signals

  • 4-20 mAdc Position Feedback
  • 1K Potentiometer Feedback

Adjustable Alarm / Travel Switches

  • 2 or 4 SPDT or DPDT Microswitches

Failure Modes

  • Fail OPEN or CLOSED with Air Reservoir
  • Hold last position on loss of signal
  • Hold last position on loss of supply air

Electrical Components

  • Nema 4X, (IP66) watertight, dust tight
  • Explosion-proof electrical ratings

ON-OFF for Isolation Service

  • Solenoid Valves, single & dual coil
  • 120, 240 VAC 60/50 Hz
  • 24, 125, 250 VDC

Manual Override

  • Hand Lever with locking bolt
  • Declutchable Gearbox with Handwheel
  • Pneumatic Regulator

Mechanical Speed Control Valves
Combo Particulate / Coalescing Air Filter
Booster Relays for Fast Drive Rotation
Air Failure Alarm Pressure Switch
Air Pressure Regulator with gauge


RETROFIT AILING DAMPER DRIVES WITH STANDARD-DD using rotary Vane Actuators as standard.  Other actuators are available.

  • Replace any existing brand of Electric or Pneumatic Damper Drives
  • Easy "Drop-in" installation
  • STANDARD-DD Series FS Floorstand drives are provided with the same footprint mounting dimensions & output shaft location as the existing drives.
  • Existing connecting rod linkage is inspected & reused or replaced by STANDARD-DD.



STANDARD-DD offers field services at your facility for the following:

  • Supervision of retrofit procedure when replacing an old tired damper drive with a new STANDARD-DD Damper Drive.
  • Our Technicians are familiar with the time & effort necessary for proper on-site installation & maintenance.
  • Our Field Service Teams will help you save time & energy with our expertise to get the job done right the first time.
  • Contact your local Representative or our factory office Sales Team for more information.

Contact Us

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

STANDARD-DD Damper Drives, LLC

Royse City, TX

Phone: (214) 300-8238 Fax: (214) 602-6823 Email: