FIELD: machine building.
SUBSTANCE: movable valve device (306) having lubricated surface (332) is described. Under one option the valve contains seal (308) with graphite O-ring (314) located inside the nozzle (304) of rod or shaft of the hydraulic valve (302), having treated surface that holds the lubricant. The treated surface of the rod or shaft is located inside the nozzle and moves lubricant parallel or back-to-back the graphite O-ring during the hydraulic valve operation.
EFFECT: improved design.
22 cl, 11 dwg
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