Kirby Morgan 47 Commercial Diving Helmet

SKU: 69

Kirby Morgan 47 Commercial Diving Helmet

SKU: 69
The Kirby Morgan 47 Commercial Divers Helmet has an entirely new breathing system oral nasal mask and water ejection system.

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The Kirby Morgan 47 consists of two major assemblies: like other "metal bottom" helmets, the helmet shell/helmet ring assembly and the neck dam/neck ring assembly. The chrome plated, machined brass helmet ring houses the latch catches and provides protection for the bottom end of the helmet. An internal, adjustable chin strap, along with the adjustable neck pad on the locking collar, gives the diver a secure, custom fit.

Air Train: The air train diffuses incoming breathing air/gas onto the face port/lens to defog and ventilate.

Defogging Steady Flow Valve: Provides an additional flow of gas into the helmet for ventilation and defogging.

Emergency (EGS) Valve: Supplies backup breathing gas to the diver.

Fiberglass and Carbon Fiber Reinforced Shell: Kirby Morgan® has over 50 years experience in composite laminations. The helmet shell is hand laid up glass fiber reinforced thermal setting polyester (fiberglass) with carbon fiber reinforcement at key points for added durability. It is light and highly impact resistant, and provides a heat/cold barrier as well as being an excellent electrical nonconductor.

Gas Supply Non-Return Valve: Commercial Rated™, It prevents loss of gas pressure in the event of umbilical damage.

Nose Block Device: Nose Block Device allows the diver to block the nose to equalize ears.

Rapid Change Modular Communications Systems: Because the module is easily removed the helmet, repair or replacement of communications parts is quick and trouble free. It is available with either a male waterproof connector or a bare wire post connection.

REX® Regulator: Full adjustment balanced piston is a breakthrough design that exceeds all requirements of all government or other testing agencies.

Side & Top Weights: Brings unsurpassed balance to the helmet while providing for accessory mounting areas.

Side Block: Multi use side block has additional ports built in to provide controlled air flow, if needed.

Silicone Oral Nasal Mask: Made of a superior silicone material which is hypo-allergenic and has a longer work life than latex.

Whisker Wings: Bubble deflecting Whisker wings keep bubbles further from face port and ears, improving visibility and decreasing internal noise.

The Kirby Morgan® Commercial Diving Helmet 47 has been tested and conforms to the performance requirements as set forth in Annex II of Directive 89686EEC and as far as applicable the EN 250:2000 EN 250A1:2006 and EN 15333-1:2008 (class B).


Weight: 33.56 lbs.
Helmet Shell: Fiberglass polyester resin polyester gel coat and carbon fibers
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
Cage Code: The cage code for identifying KMDSI products for U.S. government purposes is 58366.
CR Standards: These helmets meet or exceeds all standards established by Dive Lab of Panama City Florida and are CR (Commercially Rated) marked. 


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: Rex Regulator: The Rex regulator on the Kirby Morgan 47 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 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 breathing gas. Without a hot water shroud the commercial diver may be subject to hypothermia due to cold gas inspiration temperatures. Kirby Morgan makes no physiological recommendations regarding minimum safe operating temperatures for commercial divers using this commercial diving 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 divers 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.

Product Attachments

View FileBent tube    Size: (807.41 KB)
View FileCommunications modular    Size: (2.3 MB)
View FileCopyright    Size: (414.2 KB)
View FileDescription and Operation Specification    Size: (1.78 MB)
View FileFace port Port retainer Nose block    Size: (920.69 KB)
View FileGeneral information    Size: (1.53 MB)
View FileGeneral Preventative Maintenance    Size: (769.7 KB)
View FileHandle on fiberglass helmets    Size: (638.4 KB)
View FileHead cushion    Size: (1.13 MB)
View FileInspection and maintenance    Size: (477.59 KB)
View FileNeck ring assembly, Locking collar and Front stand offs    Size: (1.03 MB)
View FileCommunication Assemblies New Design    Size: (664.73 KB)
View FileCommunication Assemblies Old Design    Size: (724.37 KB)
View FileOne way valve    Size: (617.75 KB)
View FileOral nasal mask 350 450 455    Size: (606.72 KB)
View FileOverpressure relief valve    Size: (601.57 KB)
View FileQuad valve and tri-valve    Size: (951.38 KB)
View FileSuperflow 350 regulator blowapart    Size: (658.96 KB)
View FileTorque specs and supply pressure requirements    Size: (1.06 MB)
View FileAccessories    Size: (827.5 KB)
View FileSnap Tabs, Chin Strap, Swing Catch, Sealed Pull Pins Stainless Steel    Size: (1.31 MB)
View FileStainless Steel Helmets with SuperFlow® 350 or 455 Balanced Regulators Pod    Size: (1.11 MB)
View FileStainless Steel locking collar blowapart    Size: (559.2 KB)
View FileStainless Steel Side Block Blowapart    Size: (690.49 KB)
View Filestainless steel side block    Size: (1.15 MB)
View Filestainless steel side block    Size: (1.15 MB)
View FileSuperflow 350 regulator blowapart    Size: (658.96 KB)
View FileSuperflow 350 regulator    Size: (1.47 MB)
View FileKM47 blowapart    Size: (930.33 KB)