Humans have since a long time ago had an interest with the depths of the ocean, endeavoring to go ever deeper, ever further, and ever quicker by stretching the boundaries of the human body, innovation, and advancing modern science.
But like all things, we people are faced with limits.
Deep-sea divers used to confront these cutoff points when underwater for extensive stretches. During time underwater tissue assimilates gases, and the time needed for rising to the surface can require numerous hours, in any event, when simply exposed to specific depths for a couple minutes.
Lengthy decompression times posed an issue for divers needing to spend prolonged periods of time at depth; and each decompression comes with chances too. An answer was needed.
In 1957 Dr. George F. Bond, a United States Navy doctor, started the Genesis Project, a medical trial to study the impacts of presenting creatures to different breathing gases at different underwater depths to notice the consequences for their bodies.
The try proved that bodies arrive at an immersion point and no more opportunity to decompress is needed whenever this has been reached, regardless of the time spent underwater. All through the task, different blends of gases at different depths were used and it was observed that if most of the breathing gas was helium, all the subjects survived at different depths for different lengths of time.
In 1962 human preliminaries started at a gas blend of 21.6 percent oxygen, 4% nitrogen and 74.4 percent helium. With these preliminaries demonstrating effective, a world of chance had now opened up with divers having the option to live and work for periods of 30 days at depths of 600 feet.
This fairly obscure examination changed the horological landscape always, producing perhaps the most befuddling and conspicuous highlights of dive observes today: the helium get away from valve .
After the accomplishment of the Genesis project, the United States Navy launched Sealab , which was additionally headed by Dr. Bond. Sealabs (I, II, and III) were exploratory underwater territories developed by the U.S. Naval force during the 1960s to demonstrate the feasibility of immersion diving just as people living in disengagement for extended periods of time. Sealab I ran into some specialized issues due to a moving toward storm, with the analysis canceled following 11 days. Sealab II and Sealab III before long followed with more fruitful results.
These underwater natural surroundings were pressurized living quarters for divers, providing a blend of breathing gas composed essentially of oxygen, nitrogen, and helium. The Sealabs included a resting region, washroom, and living zone and ensured that divers could spend numerous days all at once underwater playing out all fundamental errands without making tedious, dangerous climbs on a normal basis.
Helium escape valve
During risings in diving chambers, it was noted that now and again the precious stone from one of the divers’ watches would fly off with a loud bang.
This was attributed to helium buildup for the situation, which advances in by means of diffusion by infiltrating the elastic gaskets.
As the diver ascends in the chamber, the gas pressure outside of the watch decreases, with the pressing factor inside of the watch staying higher. When the difference is too incredible, the pressing factor buildup makes the gem fly off the watch since precious stones were by and large just erosion fitted on dive watches of the 1960s.
Rolex decided to handle the issue head-on and introduced what it called the gas get away from valve , a single direction pressure-discharge valve that allowed the helium to get away from the case once the pressing factor difference reached a certain amount.
This valve was incorporated into the presently loved Rolex Sea-Dweller . On the Sealab III mission, Rolex Sea-Dwellers equipped with gas get away from valves were issued to the diving crew, in this manner taking care of the issue of helium entering the case.
At a similar time Rolex was developing its gas get away from valve, the Doxa watch brand was additionally involved with its own undertaking. In 1964 Doxa teamed up with a few expert divers, one being Claude Wesly, who was essential for the legendary Jacques Cousteau dive group, having partaken in the Precontinent I, I, and III dive missions like Sealab carried out by Cousteau and his team.
While Rolex was focused exclusively on commercial applications, Doxa’s objective was making an affordable dive watch for sporting and expert divers.
Rolex and Doxa enjoyed a good relationship and the decision was made to share the patent for the helium discharge valve.
The history of helium get away from valves is definitely an intriguing one, with humankind indeed demonstrating it will persevere relentlessly to vanquish the unknown.
And, as usual, the watch industry was at the front line of assisting boundaries with being pushed.
While the normal buyer doesn’t actually need a helium get away from valve fitted to their dive watch, it is a wonderful piece of diving history to convey around.
Average shoppers don’t need watches that can arrive at depths of 3,900 meters or keep time to inside two seconds of the day; nor do they need vehicles that can arrive at maximum velocities of 300 kilometers each hour. Yet, that isn’t the point.
The point is you can have those things since people can make them. These accomplishments of human designing and resourcefulness are what drive us to go further, quicker, longer, and higher.
So I say, long live the helium get away from valve.
* This article was first published on March 18, 2018 at Deeper, Further, Faster: Why Do Some Dive Watches Have Helium Escape Valves?
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