Patent ID: 7637164

Claim:
A combination for comparative testing of breathing techniques of firefighters, said combination comprising: a first self-contained breathing apparatus having an air tank and an air port; a second self-contained breathing apparatus having an air tank and an air port; and, an apparatus comprising: a mounting member formed to mount onto an air port of a self-contained breathing apparatus; a pressure line extending from said mounting member having a lumen which is communicatable with the air port of the self-contained breathing apparatus with said mounting member being mounted thereto; a pressure gauge operatively connected to said pressure line to detect pressure levels in said lumen of said pressure line; and, a bleeder valve mounted to said pressure line being selectively adjustable between a first open state and a second closed state, wherein, with said mounting member being mounted to the air port of one of the self-contained breathing apparatuses, and with said bleeder valve being in said first open state, said lumen is in communication with the surrounding environment via said bleeder valve, and wherein, with said mounting member being mounted to the air port of one of the self-contained breathing apparatuses, and with said bleeder valve being in said second closed state, said lumen is isolated from the surrounding environment, wherein said apparatus is selectively mountable on said first and second self-contained breathing apparatuses, and wherein, with selective adjustment of said bleeder valve, the air volumes in said air tanks of said first and second self-contained breathing apparatuses may be manipulated to be substantially equal.