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Kirby Morgan 77

Body: 

KM77 Top Tab

Kirby Morgan® 77 Bottom

see the difference

Configurations

  • 500-090 KM 77 Helmet w/Posts
  • li>500-091 KM 77 Helmet w/MWPC

Neck Dam Sidebar Main tab2

Standard Neck Dam

  • Neoprene (Medium)
  • (click image to enlarge)
Part No. Description Neck Size
510-627 Small 11-13"
510-628 Med./Standard 12'"- 14"
510-629 Large 14-16"
510-688 X-Large 15-17”

Cold Water Neck Dam

  • Neoprene
  • (click image to enlarge)
Part No. Description Neck Size
510-674 Small 10-13”
510-675 Medium 13-15”
510-676 Large 15-17”

Latex Neck Dam

  • Latex
  • (click image to enlarge)
Part No. Description Neck Size
510-631 Small/Med. 12-15”
510-633 Med./Lg. 13.5-17”
510-689 XL 18-20”

km77_tabber

This section includes a detailed description of the Kirby Morgan® 77, as well as important operational specifications.

Weight:

KM 77 - 32.43 pounds

Helmet Shell:

Stainless Steel

Control Knobs:

Polyurethane

Face Port/Lens:

Scratch Resistant Polycarbonate

Neck Dam:

Neoprene. Optional latex neck dam available

O-rings:

Buna-N

Head Cushion:

Nylon bag filled with #4 Polyester foam

Recommended Lubricants:

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.

Regulator:

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.

Cage Code:

The cage code for identifying KMDSI products for U.S. government purposes is 58366.

CR Standards:

This helmet meets or exceeds all standards established by Dive Lab of Panama City, Florida, and are CR (Commercially Rated) marked.

Note

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.