CGA870 (Med Block) to Hand Tight CGA540 (Large O2 Bottle)
This is a CGA870 Bi Pin Adapter. This adapter mimics the tank valve found on emergency O2 Tanks. This one converts a Large Oxygen Storage Bottle to CGA870 (Med Block) to accept medical regs. This version is also handtight so you do not have to look for a wrench in an emergency. This way the diver can take advantage of the extra oxygen on site in case of emergencies.