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HD/HHD Series

Scotch Yoke Actuator
Heavy Duty

Overview  |  Brochure  |  Video (Coming Soon)  |  Data Sheets  |  IOM Manuals  |  3D CAD Files  |  Case Studies

HD/HHD Series | Heavy Duty
Scotch Yokes

Manual Override Options Available

  • Symmetric and Canted Yoke options
  • Slide Block Technology extends service life
  • Hard chrome plated wear surfaces
  • Three layer epoxy coating for general corrosion resistance
  • Modular design w/ self-contained spring modules
  • Optional Heavy Duty Polyamide Epoxy coating

Hydraulic & Custom Paint
Options Available

Technical Videos

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YouTube Video UExSelBPX28zNmI1SC1vQ2ZzaUxURjBHRnk0Qm44Q0hHNS4wOTA3OTZBNzVEMTUzOTMy

Convert Max-Air Rack & Pinion Actuator from Fail Close to Fail Open or from Fail Open to Fail Close

Max-Air Technology August 31, 2023 2:15 am

This tutorial covers the basics of adjusting the open & close travel stops on MT Series actuators. For more information, visit www.maxairtech.com/

This tutorial covers the basics of adjusting the open & close travel stops on MT Series actuators.

For more information, visit www.maxairtech.com/

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YouTube Video UExSelBPX28zNmI1SC1vQ2ZzaUxURjBHRnk0Qm44Q0hHNS4yODlGNEE0NkRGMEEzMEQy

MT Series – Travel Stop Adjustment Tutorial

Max-Air Technology November 3, 2022 6:42 pm

This tutorial covers the basics of setting the supply pressure on a standard air filter regulator. For more information, visit www.maxairtech.com/

This tutorial covers the basics of setting the supply pressure on a standard air filter regulator.

For more information, visit www.maxairtech.com/

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YouTube Video UExSelBPX28zNmI1SC1vQ2ZzaUxURjBHRnk0Qm44Q0hHNS41MjE1MkI0OTQ2QzJGNzNG

Air Controls – Air Filter Regulators Tutorial

Max-Air Technology November 3, 2022 6:42 pm

Recently, we had the opportunity to photograph one of our LockMesh® Coated Actuators after 2 years of service. This unit comes from a prominent salt mining and processing company. They have had great success using our LockMesh® Coated Actuators. With several hundred units installed, they have specified our coated actuators for all future projects. This is a significant cost savings for them when compared to the alternatives of stainless steel actuators or replacing standard aluminum actuators every few months. More info on our LockMesh® Coating: https://www.maxairtech.com/literature/04-FeatureFocus/00-Max-Air_FeatureFocus_LockMesh.PDF Max-Air is proud to offer our advanced coating system, LockMesh®. This hybrid coating system combines the rugged toughness of a stainless steel base coating with the corrosion resistance of PTFE. Corrosive environment applications such as marine areas, caustic wash down, submerged service, and direct chemical exposure require equipment with enhanced corrosion resistance. Frequently the common options are plating, painting, or a change to stainless steel construction. All of these can be effective in some applications; however, they do have limitations and in some cases carry a significant weight and/or cost impact. LockMesh® has been shown to provide a cost effective compromise. It provides the chemical resistance of PTFE along with the durability enhancement of a stainless steel base layer.

Recently, we had the opportunity to photograph one of our LockMesh® Coated Actuators after 2 years of service. This unit comes from a prominent salt mining and processing company. They have had great success using our LockMesh® Coated Actuators. With several hundred units installed, they have specified our coated actuators for all future projects. This is a significant cost savings for them when compared to the alternatives of stainless steel actuators or replacing standard aluminum actuators every few months.

More info on our LockMesh® Coating:
https://www.maxairtech.com/literature/04-FeatureFocus/00-Max-Air_FeatureFocus_LockMesh.PDF

Max-Air is proud to offer our advanced coating system, LockMesh®.
This hybrid coating system combines the rugged toughness of a stainless
steel base coating with the corrosion resistance of PTFE.

Corrosive environment applications such as marine areas, caustic
wash down, submerged service, and direct chemical exposure require
equipment with enhanced corrosion resistance. Frequently the common
options are plating, painting, or a change to stainless steel construction.
All of these can be effective in some applications; however, they do have
limitations and in some cases carry a significant weight and/or cost
impact.

LockMesh® has been shown to provide a cost effective compromise.
It provides the chemical resistance of PTFE along with the durability
enhancement of a stainless steel base layer.

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YouTube Video UExSelBPX28zNmI1SC1vQ2ZzaUxURjBHRnk0Qm44Q0hHNS4wMTcyMDhGQUE4NTIzM0Y5

LockMesh Coating for Rack & Pinion Actuators | Exclusively from Max-Air Technology

Max-Air Technology July 30, 2021 7:20 pm

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Data Sheets

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IOM Manuals

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3D CAD Models

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Check out these Case Studies!

Custom Forged Sesto Trunnion Ball Valves w/ Air Controls, Explosion Proof Termination, & Pneumatic Actuators Case StudiesHD SeriesLimit SwitchesMT SeriesSesto ForgedSolenoid Valves
July 28, 2025

Custom Forged Sesto Trunnion Ball Valves w/ Air Controls, Explosion Proof Termination, & Pneumatic Actuators

Even more Pneumatically Automated Explosion Proof Forged Trunnion Valves are shipping today! This order is a great example of the transition point between affordability of a Rack & Pinion and Scotch Yoke. At some point in the consideration of a higher torque actuator, the decision…
Max-Air Technology
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Dedicated Truck Shipment of Resilient Seated Lug Valves w/ Declutchable Overrides & Hand Pump Overrides 050/051 SeriesCase StudiesGOW SeriesHD SeriesMT Series
July 28, 2025

Dedicated Truck Shipment of Resilient Seated Lug Valves w/ Declutchable Overrides & Hand Pump Overrides

This dedicated truck shipment of Resilient Butterfly Valves is full of large lug valves w/ pneumatic actuation & manual override options. The Rack & Pinion assemblies include our GOW Series Declutchable Gear Operators and the Scotch Yokes include Hydraulic Hand Pump Overrides. #thebestwaytoautomateyourprocess
Max-Air Technology
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30″ Delta T Class 150 High Performance Butterfly Valve w/ Spring Return Scotch Yoke Actuator, Limit Switch, Solenoid, Termination, & Tubing 800 SeriesCase StudiesHD SeriesLimit Switches
October 23, 2024

30″ Delta T Class 150 High Performance Butterfly Valve w/ Spring Return Scotch Yoke Actuator, Limit Switch, Solenoid, Termination, & Tubing

This Delta T 851 Series, High Performance, Stainless Steel, Class 150, Butterfly Valves is being automated by our HD Series, Scotch Yoke Actuator and includes limit switch, solenoid valve, and termination. There was also another 18" Valve in the same configuration that shipped with this…
Max-Air Technology
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4″ Forged Sesto Carbon Steel Metal Seated Trunnion Ball Valves w/ Max-Air Spring Return Scotch Yokes & Air Handling Case StudiesHD SeriesSesto ForgedSolenoid Valves
October 11, 2024

4″ Forged Sesto Carbon Steel Metal Seated Trunnion Ball Valves w/ Max-Air Spring Return Scotch Yokes & Air Handling

Through our Sesto Valves brand, we supply a variety of engineered ball valve solutions! These 4" Class 600 Carbon Steel Metal-Seated Trunnion Valves are going into high pressure steam service. The 316 Stainless Steel Ball and Seat are coated with Tungsten Carbide. All of this…
Max-Air Technology
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Metal Seated Delta T Control Butterfly Valve w/ Scotch Yoke and Positioner C SeriesCase StudiesHD Series
September 12, 2024

Metal Seated Delta T Control Butterfly Valve w/ Scotch Yoke and Positioner

This Metal Seated Delta T Control Series Butterfly Valve is being automated by our HD Series Spring Return Scotch Yoke Actuator. Modulation is being performed via positioner. This is a premium control package. Our unique diffuser plate butterfly valve incorporates a spherical edged disc with…
Max-Air Technology
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