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Manual Operators

 Reliable handwheel driven gear operators for
standalone operation or declutchable manual override.

 

GO/GS Series

Manual Gear Operator
Manual-Only Valve Operator

Cast Iron: Up to 885,075 in-lbs
Stainless: Up to  39,825 in-lbs
ISO 5211 Mounting
Optional:
Chainwheel w/ Lockout
Limit Switch Mounting
High Visibility Beacon

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GOW Series

Declutchable Gear Override
Automated Valve Override

Up to 61,955 in-lbs
Coated WCB, triple epoxy
IP67 Rated
ISO 5211 Actuator Mounting
ISO 5211 Valve Mounting
Lockout plate standard w/
integrated block & bleed

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Manual Operator Case Studies

Chainwheel-Operated Butterfly Valve w/ Add-On Lockout Bucket — Data Center Chilled Water Line 050/051 Series250/251 Series650/651 SeriesCase StudiesGO Series
July 1, 2026

Chainwheel-Operated Butterfly Valve w/ Add-On Lockout Bucket — Data Center Chilled Water Line

A colocation data center needed a reliable way to isolate an 8" chilled water line feeding a critical redundant chiller during maintenance. The existing manual valve had no lockout provision and was mounted in a hard-to-reach spot, making safe LOTO procedures difficult. Max-Air supplied a…
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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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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Max-Air MT Series Aluminum Rack & Pinion Actuator w/ Gear Operator & Explosion Proof Limit Switch/Termination Case StudiesGOW SeriesLimit SwitchesMT SeriesSolenoid Valves
October 16, 2024

Max-Air MT Series Aluminum Rack & Pinion Actuator w/ Gear Operator & Explosion Proof Limit Switch/Termination

Below you will see an MT Series Rack and Pinion Actuator w/ Explosion Proof Solenoid, Limit Switch Box, and Termination. Our GOW Series Declutchable Override features an easy declutch mechanism, integrated block and bleed capability, and lockout/tagout holes.
Max-Air Technology
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