Self Contained Breathing Apparatus - SCBA. Spiromatic 90USA SCBA and Harness Disc Price List Price. 30136-01 Spiromatic 90USA HP $ 1,277.70 $ 1,419.67 The mask is designed to be used with underwater communication equipment. The DIVATOR Secondary Breathing Valve (Octopus) is fitted with a lever in order Interspiro was formerly a division of AGA and has been manufacturing self-contained breathing apparatus for diving, firefighting and rescue applications ACN 1/R7 provides the operating guidelines for enclosed or confined space diving utilizing Interspiro MKII, DP 1/2 Surface Supply Diving Apparatus. Among the most important is the Self Contained Breathing Apparatus (SCBA), While the Drager Patent also had an automatic-on/manual-off feature,The reasons given for stopping when wearing the chemical protective suit and SCBA were mainly high heart rate and rectal temperature.