ELECTRIC MULTI-TURN ACTUATORS for the automation of industrial and special valves with torque requirements up to 120,000 Nm

Offering the perfect actuator automating any valve – this is the milestone defined by AUMA. The new sizes of the GHT gearbox type range play a key role within AUMA's modular product portfolio. The abbreviation “HT” of the gearbox name GHT stands for “High Torque”. Wide application range SA multi-turn actuators and GHT gearboxes are available for both open-close and modulating duties and are also approved for use in potentially explosive atmospheres. The combinations can thus be used in technical process plants of the most different sectors – from water management and power plant sector right...

Explosion protection Both multi-turn actuators and gearboxes were tested and certified in close collaboration with national and international certification bodies. Approvals have been obtained from authorities worldwide, including ATEX (Europe), IEC (international), FM (USA) and ROSTECHNADSOR/EAC (TR-CU) for Russia. The combinations are also available in fireproof version and will remain fully operable for 30 minutes at temperatures up to 1,100 °C. Technical data Output mounting flange Suitable multi-turn speed Ambient temperatures > -40 °C to +120 °C > -40 °C to +60 °C for explosion-proof devices...

SA/GHT combinations can be used for all valves requiring a rotary movement for automation, including gate valves, globe valves or special valves such as double block and bleed valves. No matter whether standard valve design or special valves are involved: there is no standard solution for valve automation. The valve requires the actuator to provide either torque or thrust at defined running speed via a certain period in compliance with the respective type of duty. On the other hand, the actuator has to be integrated into an existing distributed control system with various functional requirements....

AUTOMATION OF COKER VALVES DAMPER AUTOMATION Delayed coking systems transform the residual oil generated when refining crude oil and crack it into gas oil and petroleum coke. The heart of the plant is a coke drum with a height of more than 40 metres where the conversion processes take place at high temperatures. Once the process is finished, both ends of the drum have to be opened to discharge the coke. By using automated special valves, manual opening, which is both dangerous and time-consuming while requiring large numbers of personnel, becomes obsolete. Large dimension dampers in various designs...

GHT worm gearboxes The hardened and ground tooth flanks of the worm shaft combined with the worm wheel made of bronze ensure low wear and guarantee an exceptionally long lifetime of these gearboxes. The worm shaft with anti-friction bearing ensures high efficiency and prevents critical warming of the gearboxes for long operating times. Optimised housing design reduces weight and consequently the load to be borne by the valve. Housing parts are made of lamellar graphite cast iron (GJL). On request they are available in spherulitic graphite cast iron (GJS). As an option, the GHT is also available...

Integral actuator controls (option) Controls, in our example the microprocessor controlled AC, are available with different interfaces to the DCS - either for parallel signal transmission or fieldbus communication. Profibus DP, Modbus RTU, DeviceNet as well as Foundation Fieldbus are supported. DCS connection using HART or wireless HART is also possible. Advanced diagnostic functions enable preventive maintenance and integration of actuators into asset management systems. The integral local controls allow for local actuator operation. Electric SA multi-turn actuator The torque of the electric...

AUMA Riester GmbH & Co. KG Aumastr. 1 D-79379 Muellheim Tel +49 7631-809-0 Fax +49 7631-809-1250 [email protected] AUMA subsidiaries or representatives are implanted in more than 70 countries. For detailed contact information, please refer to our website. www.auma.com Subject to changes without notice. The product features and technical data provided do not express or imply any warranty. Y006.474/003/en/1.15