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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
F16K39/00—Devices for relieving the pressure on the sealing faces
F16K39/04—Devices for relieving the pressure on the sealing faces for sliding valves
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FR537945D1921-07-051921-07-05Robinet équilibré pour conduites de grand diamètre à fluide quelconque sous pression
ExpiredFR537945A
(fr)