This non-rebreathing T valve is a high performance, very low dead space, low air flow resistance valve; suitable for high air flow applications (e.g. exercise physiology). It comes with an AFT11D coupler attached. The AFT21 incorporates a gas sampling port (female Luer) for interfacing with the AFT20 gas sampling kit. For breathing directly into the valve, use the AFT9 mouthpiece, AFT3 noseclip and (optionally) the AFT24 head support.
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