FIELD: fire-fighting, particularly fixed fire-extinguishing devices.
SUBSTANCE: valve 10 comprises body, at least one inlet orifice 101 and at least one outlet orifice 102, channel establishing communication between inlet and outlet orifices, as least one tearable (rupturable) diaphragm 13 or similar member, which closes the channel in undamaged state. Valve has piston 15 provided with piercing member 14 or similar member adapted to rupture diaphragm. Piston 15 has pressurized working medium channel 17 extending through piston from one piston end to another one along axis thereof. Valve has another tearable diaphragm or similar member, which seals piston channel 17 in undamaged state.
EFFECT: increased valve air-tightness and reliability.
7 cl, 2 dwg
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