| 摘要 |
<p>A fluid distributor valve, for use in an aircraft fire protection system, comprises a rotary valve member (60) driven from a normal position in which inlet ports (52,54) communicate with outlet ports (56,58) respectively to a switched position in which ports (52,54) communicate with ports (58,56) respectively by means of an explosively actuated piston (70). A piston housing (66) is mounted on valve body (50) and communicates with the interior of the body through a passage (68). The valve member is locked in its normal position by means of a spring-loaded plunger (76) carried by an actuator portion (72,74) of the valve member which is released by actuation of the piston. The piston itself serves to lock the valve member in its switched position. There is also disclosed an explosively actuated fire extinguisher outlet head comprising a sealing plug having a head part which is sheared by an explosive charge upon actuation of the extinguisher head to permit release of extinguishant. The sheared head part is guided along a curved path into an end position in which it is retained so as not to impede discharge of extinguishant through a discharge passage.</p> |
