POSITIVE PRESSURE TEST APPARATUS FOR FACEPIECE RESPIRATOR

摘要

A positive pressure test apparatus (10) for fit testing a facepiece respirator having an exhalation valve, including a cover portion (12) having a central bore (14) with an inwardly directed shoulder (16) at the base. A plunger (18) is provided having a stem (20), a button portion (22) on one end and a flange portion (24) on the opposite end. The stem (20) is situated within the central bore (14), the button portion (22) extending above the surface of the cover portion (12) in a rest position, and the flange portion (24) extending below the inwardly directed shoulder (16). Bias means (28) are located in engagement with the button portion (22) and the shoulder (16) for biasing the plunger (18) from the rest position to a depressed position, wherein the button (22) is flush with the surface (26) of the cover portion (12) and the flange portion (24) seals the exhalation valve. A mounting means is provided to attach the positive pressure test apparatus (10) to the respirator.