Государственное Предприятие "Конструкторское Бюро "Южное" Им. М.К. Янгеля
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A pyro-valve for hydraulic systems of rocket motors has body with flow-through part that has inlet, outlet cavities and cone-like seat, spring-supported shutoff body that is fixed in open position by means of pin with stopper collar that is cut. Pyro-valve is equipped with safety element as thin-wall plate with break element that holds the shutoff body of pyro-valve in open position at non-authorized cut of the main holding element – collar of pin, it does not prevent normal operation of pyro-valve. Such implementation increases reliability of pyro-valve and system in which it is used.