FIELD: machine building.
SUBSTANCE: system of drive consists of servomotor (1), valve (2) and unit (3') connecting them. Unit (3') includes connecting shaft (50') with orifice (506) designed for receiving the end of lever (6'). At insertion of lever (6') into the channel opened with orifices (320) and (506) connecting shaft (50') is detached from servomotor (1) and gate (280) of valve (2) can be turned manually not destroying the proper servomotor. When lever (6') is not used it can be removed from orifice (506); thus it does not cause hazardous situation. Additionally, the invention refers to the complete set consisting of lever (6') with unit (3) and with valve (2) or servomotor (1) as an version.
EFFECT: ensuring safety at maintaining drive systems of valve.
17 cl, 7 dwg
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