FIELD: construction.
SUBSTANCE: indicator of locking element position of pipeline valves comprises part, for instance cover, scale with helical cut or slot, which is rigidly fixed by control flywheel, and indicating element. The latter moves in helical cut or slot of scale. Scale is arranged as either flat or inclined, and is installed over response fixed element. Slot is provided in this fixed element, where indicating stepped element moves.
EFFECT: creation of small position indicator for locking element, also for pipeline valves with fixed spindle.
2 cl, 5 dwg
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