The Envoy
Yoke shown, also available with DIN connection
350-3110 (Yoke) 350-3121 (DIN with Yoke converter)
The Performance Graph shown above is different from all the others in this section because it has a lower Breathing Rate of only 37 Liters per Minute (Moderate Work). Note that this graph shows a final "EXT WORK OF BREATHING" number of only 1.00 joules per liter. Compare this to the graph for the same regulator with all other test criteria the same except for a 62.5-LPM Breathing Rate (Heavy Work). The point is that changing this demand rate is often unnoticed, but the result looks much better to the untrained eye.