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Publication of FR902221ApublicationCriticalpatent/FR902221A/fr
F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
F16K1/32—Details
F16K1/34—Cutting-off parts, e.g. valve members, seats
F16K1/44—Details of seats or valve members of double-seat valves
F16K1/443—Details of seats or valve members of double-seat valves the seats being in series
FR902221D1943-02-271944-02-26Vanne à double obturation pour liquides
ExpiredFR902221A
(fr)