Product Specifications: Kirby Morgan 77 Helmet

This section includes a detailed description of the Kirby Morgan 77, as well as important operational specifications. The Kirby Morgan 77 helmet has been tested and conforms to the performance requirements as set forth in Annex II of Directive 89/686/EEC and, as far as applicable, the EN 250:2000, EN 250/A1:2006 and EN 15333-1:2008 (class B). It is fully CE marked with demand valve REX.

Weight:

KM 77 - 32.43 pounds

Helmet Shell:

Stainless Steel

Control Knobs:

Polyurethane

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 equivelent may be used for helmet and mask components that are used with gas mixtures containing less than 50% oxygen.

Regulator Performance

Rex^® Performance

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.

CE Approved:

The KM 77 helmet is CE Approved.

NOTE

The minimum operating temperature recommended for this helmet is 37 degrees F, only in regards to regulator performance. At the time of this writing, no hot water shroud is available for this helmet for heating the diver’s breathing gas.

Without a hot water shroud, the diver may be subject to hypothermia due to cold gas inspiration temperatures. Kirby Morgan makes no physiological recommendations regarding minimum safe operating temperatures for divers using this helmet.

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.

Recommended overbottom (OB)gas supply pressure for best performance at depths are calculated by the formula (fsw x 0.445+14.7) + recommended p.s.i. g.

Products

KM 77

KM 57

KM 47

KM 37

KM 37SS

SL 27

SL 17B

SL 17C

FAQ

500-090

KM 77 Helmet w/Posts

500-091

KM 77 Helmet w/MWP

Manual & Blowaparts Notices KM-77 Accessories Kits & Neck Dams