The ESSL series Declutch Override Gear Box were specially designed used for butterfly valve, ball valve and plug valve together with pneumatic actuators / valve actuator. This device allows for manual operating during installation, system testing and in the event of a supply air-failure.



1. Compact and simply design, light in weight.
2. Manufactured with cast iron housing.
3. ISO 5211 direct mount patterns.
4. Easy for customers to choose relative position between gear operator and valve, with two keyway apart 90~ in the inner hole of the worm gear.
5. Easy to realize the manual drive or the pneumatic drive with the place-pin. Filled with special lubricant before leaving the factory.
6. Weather-proof is IP65.

Declutch Override Gear Box Catalog

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