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EISENWERK WILHELM PFAHL
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EISENWERK WILHELM PFAHL
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Publication of FR724241ApublicationCriticalpatent/FR724241A/fr
G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
G05D23/00—Control of temperature
G05D23/01—Control of temperature without auxiliary power
G05D23/12—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid
G05D23/121—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid characterised by the sensing element
G05D23/122—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid characterised by the sensing element using a plurality of sensing elements
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FR724241D1931-10-121931-10-12Soupape de réglage automatique pour installations de chauffage à vapeur de basse pression chauffées à l'eau surchauffée
ExpiredFR724241A
(fr)
Soupape électromagnétique, commandée par un thermostat, pour installation de chauffage à vapeur, en particulier pour le chauffage de véhicules de chemins de fer