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Dec. 8.2004 Subject: Products Affected:
The Quad Valve™ is designed to couple the regulator exhaust with the helmet main exhaust and route them into a single plenum chamber, mounted between the regulator body and main exhaust body. The exhaust gas then must pass through either one of two (or both) exhaust valves that are part of the bubble deflector (whisker). By having an exhaust valve in both sides of the bubble deflector, exhalation resistance is minimized, while still helping to maintain the isolation of the main helmet and regulator exhaust valves.
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The new KMDSI Quad Valve™ is a superior exhaust system with exceptionally low exhalation resistance, that helps to keep the helmet free of contaminants in polluted water. The Quad-Valve™ is the first exhaust that isolates the breathing system from the surrounding water with a four valve, low breathing resistance design, (Patents Pending). 
The Quad Valve™ makes use of the existing main exhaust body on the Kirby Morgan® 17K helmet, as well as model KM 37, and the SuperLite-17A/B. (A separate version will be available for the SuperLite®-27.)The system will not work on the SuperLite®-17C, or any model of Kirby Morgan Band Mask®. These systems will only accept the Tri-Valve® Exhaust at this time.
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