History
ETNA was founded in 1942 in response to the gasoline shortage during World War II by Jean GRATZMULLER, who had later invented a triple stage pressure reducer. The company has since then been under the direction of Carole GRATZMULLER, granddaughter of the founder.
Based in Argenteuil, a suburb of Paris, ETNA industrie has registered over 240 patents since its inception with nearly 50% of its turnover dedicated for export.
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1942: Pressure reducer for liquefied gas (road and rail vehicles). |
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1947: Mr. Gratzmuller and Mr. Berger develop the hydraulic starter (used for example in AMX tanks and generator engines). |
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1952: 1st hydraulic drive for circuit breaker with mechanical locking: Jeumont launcher |
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1954: 723 command block, 1st block with mechanical stop and opening valve |
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1957: 919 command block, designed for circuit breaker with spring return |
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1964: Drive with hydraulic locking (self holding) |
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1966: Development of the 1st Make switch |
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1984: 6000 command block, very compact |
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1984: 6000 command block, very compact |
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1990: New family of THT hydraulic drives for working temperatures -55°c |
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1994: Development of UHT hydraulic drives for circuit breakers intended for a wide voltage ranging from 300 to 800 KV |
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1996: Valve for battery (vehicles, aeronautics…) |
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1997: -3,000 meters valve, ocean beds (offshore) |
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1998: New Make switch generation |
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2002: Safety valves and piston accumulator types of ETNA Industrie conform with the requirement of the Pressure Equipment Directive (PED) 97/23/ CE |
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2006: Development of the ‘’PLUG and PLAY’’ hydraulic drive. |
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2008: Bidirectional safety valve |
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2012: Extension of the PLUG and PLAY concept. |
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2016: 72,5 kV New Generation Make Switch |
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2020: High Temperature Safety Valve |
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