DESCO U.S. Navy Helium Diving Helmet

Cat. No. 29019

This is the standard U.S. Navy Helium/Oxygen Mixed Gas Helmet based on the standard Mark V Helmet. The main feature of this helmet is the canister mounted on the rear of the helmet and a venturi system allowing for recirculation of breathing gas to conserve Helium. The canister was filled with a scrubbing agent to remove Carbon Dioxide from the breathing mix.

The breastplate is the same as a normal Mark V except the lock assembly is located in front in place of the spitcock. All other parts are the same as a standard Mark V except for the omission of the spitcock valve, and the addition of a extra communications elbow which the Navy used to connect electrically heated underwear to a power source.

The canister can be removed and with the canister elbows capped the helmet can function as a normal Mark V. Standard finish is Tin plate but the helmet is also available polished. Shipping weight with canister approximately 93 lbs.

The U.S. Navy Mark V Helium Helmet is available in two versions. DESCO can produce either style of this helmet.

The Early Version
The early version has the exhaust tube extending to the back of the helmet.

The Later Version
The newer style incorporates a Double Exhaust Valve on top of the helmet. This change was made in the early 1950's.

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