The Flow-by Piston design of the RaZor 1st stage provides much greater reliability and serviceabilty compared to conventional designs, while improving responsiveness and performance at all breathing rates. This 1st Stage sits direct atop a Tank Valve section the threads into any standard 3/4-14 NPSM Scuba Cylinder. This combination saves space and increases efficiency making it ideal where weight and space are critical such as stage bottles and fully redundant systems.  The RaZor comes with a filling adapter that allows the RaZor to fill its tank using a standard Yoke Filling Whip.

RaZor FIRST STAGE/VALVE FEATURES:

• High Performance Porting
• Flow-by Piston 
• Yoke Style Filling Adapter Included
• 4 Low Pressure Ports (3/8”-24 UNF)
• 1 High Pressure Port (7/16”-20 UNF)
• Weight 1.62 lb.

ENVOY SECOND STAGE FEATURES:

• Downstream valve
• Balanced Diaphragm
• Dive/Pre Dive Venturi Control
• Weight: .42 lb. (.26 kg) ( w/o hose)
• Hose Length: 44 in. (1.1 m)