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050/051 & 650/651 Series

200 PSI Resilient Seated Butterfly Valves
Ductile Iron | Stainless Steel

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

05X/65X Series
Resilient Seated

(050, 051, 650, 651)

In 2009, Max-Air Technology entered the valve market with its first valve product, the Delta T Resilient Series Butterfly Valve. With years of industry experience in valve automation, Max-Air sought to address the market’s need for thoughtfully engineered valves. These Delta T Resilient Seated Butterfly Valves lead the way with a proven cartridge seat design and standard ISO configurations. The full breadth includes a comprehensive disc, seat, and size offering for any application. The Delta T 05X and 65X Resilient Seated Butterfly Valves follow the Max-Air Technology tradition of utilizing easy integration, flexible customization, and reliable operation. Features include standard ISO 5211 bolt circle patterns for mounting, ISO square stems, and a 3-year limited warranty.

  • Iron Body Butterfly Valve; sizes 1-1/2” – 48”
  • Stainless Steel Body Butterfly Valve; sizes 2” – 24”
  • Wafer and Lugged Body Styles Available
  • Manual Valves with handle or gear operator available
  • ISO 5211 mounting patterns for ease of actuation
  • ABS Type Approval, Certificate Pending
  • Coast Guard, NSF – Approvals

Data Sheets

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IOM Manuals

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3D CAD Models

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Check out these Case Studies!

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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Pneumatically Operated Resilient Seated Butterfly Valve w/ Open/Close Feedback & Declutchable Gear Override 050/051 SeriesCase StudiesGOW SeriesLimit SwitchesMT SeriesSolenoid Valves
October 23, 2024

Pneumatically Operated Resilient Seated Butterfly Valve w/ Open/Close Feedback & Declutchable Gear Override

These Delta T Resilient Butterfly Valves in Ductile Iron Wafer Body w/ Stainless Steel Disc & EPDM Seat are being operated by our MT Series Rack & Pinion Actuators. Each assembly has a GOW Series Declutchable Gear Operator for Manual Override. The Solenoid diverts air,…
Max-Air Technology
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On/Off/Jog Max-Electric Actuators w/ Handwheel Override on Delta T Resilient Lug Butterfly Valves 050/051 SeriesCase StudiesME Series
October 22, 2024

On/Off/Jog Max-Electric Actuators w/ Handwheel Override on Delta T Resilient Lug Butterfly Valves

These Open/Close/Jog 120VAC ME Series Max-Electric Actuators are automating our Lug Ductile Iron Resilient Butterfly Valves! Max-Air Technology is a full service part-turn automation manufacturer. We make our own valve, actuators, and automation accessories. Automation is simple with Max-Air because of our world class valve…
Max-Air Technology
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Stainless Steel Delta T Resilient Butterfly Valve Tee Assembly w/ Max-Electric Actuation & Handwheel Override 650/651 SeriesCase StudiesME Series
September 24, 2024

Stainless Steel Delta T Resilient Butterfly Valve Tee Assembly w/ Max-Electric Actuation & Handwheel Override

This 10" Stainless Steel Tee Assembly includes our Delta T Stainless Resilient Butterfly Valves, Stainless Tee, Custom Stainless Linkage, and a Modulating Max-Electric Actuator. This particular configuration is for diverting flow. Media enters through the center flange and diverts left, right, or somewhere in between…
Max-Air Technology
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Electrically Automated Resilient Butterfly Valve Tee Assembly w/ Custom Linkage 050/051 SeriesCase StudiesMA Series
September 20, 2024

Electrically Automated Resilient Butterfly Valve Tee Assembly w/ Custom Linkage

This Tee Assembly uses our Delta T Valves Ductile Iron Lug Resilient Butterfly Valves w/ Nickle Plated Ductile Iron Disc and Buna Seat. The valves are being operated by a single Max-Electric Intelligent MA Series Actuator complete with Electronic Failsafe via SuperCap!
Max-Air Technology
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