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Part-turn gearboxes

GSI

AUMA GSI part-turn gearboxes can be used for operating part-turn valves in nuclear power plants (Inside & Outside Containment).

For open-close duty
Type of duty: Short-time duty S2 - 15 min (open-close duty)
Selection of operation modes: - Motor operation (electric multi-turn actuator) - Manual operation directly with handwheel

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Design features

Sensitive adjustment of travelling nut
With or without primary reduction gearing
Suitable for electrical operation and manual operation

Service conditions

Ambient temperature –25 °C to+80 °C
Earthquake resistance
LOCA/DBE resistance: For a short time max, 185 °C

Interfaces

Valve attachments according to DIN and ISO standards

Options

Combinations with SAI/SARI or SAN/SARN actuators
Manual operation (without actuator) possible

Advantages

DBE resistant gearbox
Simple installation
Light & compact design
Easy maintenance
Non-blocking end stops

Specifications

Key information at a glance

Design features

Service conditions

Approvals

IP68

Enclosure protection

-25 °C – +80 °C

Ambient temperature

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