| 摘要 |
<p>The invention relates to a pressure control valve 1 for a tank intended to contain a fluid and comprising at least one flap 5 obturating an aperture linking the inside (I) and the outside (E) of the tank, such flap being held in the obturating position by spring means 7 pressing on a support 9, such valve incorporating means 10, 20 allowing the retraction in whole or in part of the spring support 9 such as to reduce the pressure exerted by the spring 7 on the flap 5.This valve is characterised in that the support 9 has an embrittled part 15 able to be fractured by a mobile piston 20 activated by a pyrotechnic gas generator 27.</p> |
