FIELD: valving. SUBSTANCE: member has plate made of a composition material. The plate is permanently connected with a bushing connected with a rod. A supporting ring is mounted on the end face of the plate from the side of the rod. The diameter of the ring is equal to the plate end face diameter. The ring is screwed on the bushing end that is projected out of the plate. The spaces between the plate, bushing, and supporting ring are filled with a corrosion-resisting sealing compound. EFFECT: enhanced reliability. 1 dwg
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