An anodized aluminum heat sink on the 2nd stage along with the external diaphragm on the 1st stage improves the cold water performance of the Onyx II regulator.
Second Stage: Downstream valve Balanced Diaphragm Dive/Pre Dive Venturi Control Diver Adjustable Breathing Sensitivity New Compact Profile Anodized aluminum heat sink.
Second Stage Materials: | |
Cover: | Flexible Thermoplastic |
Case: | Thermoplastic |
Poppet Seat: | Elastomer |
O-rings: | Buna-N |
Diaphragm: | Elastomeric Polymer |
Exhaust Valve: | Elastomer |
Mouthpiece: | Silicone |