This section includes a detailed description of the Kirby Morgan® 77, as well as important operational specifications.
KM 77 - 32.43 pounds
Scratch Resistant Polycarbonate
Neoprene. Optional latex neck dam available
Nylon bag filled with #4 Polyester foam
All helmets and masks are lubricated at the factory with Christo-Lube®. Kirby Morgan recommends Christo-Lube® or Tribolube® for all gas train components. Dow Corning® 111 Silicone or equivalent may be used for helmet and mask components that are used with gas mixtures containing less than 50% oxygen.
The Rex® regulator on the Kirby Morgan® 77 offers high performance. The regulator has been tested at Dive Lab at Panama City, Florida. It meets or exceeds all current U.S. Navy and European diving standards.
The cage code for identifying KMDSI products for U.S. government purposes is 58366.
The minimum operating temperature recommended for this helmet is 34 °F (1 °C), without the use of the water shroud P/N 525-100 and hot water.
Without a hot water shroud, the diver may be subject to hypothermia due to cold gas inspiration temperatures.
NOTE: Usually the greatest danger of demand regulator icing will be encountered on deck when the surrounding air temperature is less than 32 °F (0 °C). This effect is primarily due to the refrigeration effect of breathing air pressure reduction, and the addition of moisture from the diver’s exhalation coming in contact with the topside air temperature.