FIELD: machine engineering.
SUBSTANCE: rotation preventing device for hydraulic valve comprises a rotation preventing lock rigidly attached to the flow control element rigidly attached to the valve stem of the hydraulic valve for functioning as one assembly, and a rotation preventing device adapted suitable for gripping the rotation preventing lock. The rotation preventing device comprises the first gripping surface adapted to grip the second gripping surface of the rotation preventing lock to prevent rotation of the lock preventing rotation relative to the longitudinal axis of the this lock when the lock is located in the valve.
EFFECT: increased reliability.
18 cl, 4 dwg
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