FIELD: valving. SUBSTANCE: actuator of the safety valve is made up as a twisted tubular spring. One of the ends of the spring is rigidly secured inside the housing. The second end of the spring is provided with a rotatable seat. The end face surfaces of the seat and plate are ground and provided with through openings arranged identically. The inner space of the spring is in communication with the inlet passageway. EFFECT: enhanced reliability. 1 dwg
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