Code: MW11909
Unknown pattern but this operating head would be used with the carbon dioxide cylinder fitted to an aircrew life jacket. In an emergency the head would be manually operated and CO2 from the cylinder would inflate a gastight stole in the jacket. It consists of an alloy body into which a plunger mechanism is fitted, and a red plastic cap which is connected to the plunger mechanism via a chain. When the cap is pulled off, the chain operates a lever which forces a piercing pin through the sealing disc on the CO2 cylinder. When the cap is in place, the plunger is locked by a safety pin; the pin is pushed out by the plunger when the cap is pulled off. The cap is engraved with the word 'Pull' in English, French and Spanish. Dated 7/59. Stock code MW11909.
