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USAAF oxygen mask leak detector assembly

USAAF oxygen mask leak detector assembly

Code: O24834

£55.00
 

'USAAF, Detector Assembly, Demand Oxygen Mask Leak'.  By Master Plastic Molding Corp.  Approximately 3.5"/9cm diameter.  This mechanical leak detector consists of two sections, a bottom, flat, plastic plate, and an upper, plastic shell bearing a female connector.  The two are connected by collapsible rubber bellows. When an oxygen mask is placed on the face and the tube plugged into the tester, a completely closed system is created.  By releasing the bottom plate to hang free on the bellows, a predetermined suction is caused, and if the mask has a leak, the plate will descend.  The user's breath must be held as if swimming underwater.  If the plate descends all the way in 10 seconds or less, a dangerous mask leak is indicated and remedial action would have been taken.  AAF marked and with 1945 order code. Used with demand type masks including the A-14 as detailed in the AAF Reference Manual for Personal Equipment Officers.   Unissued/unused condition.  Stock code O24834.