It provides functionality for professional divers operating at great depths for prolonged periods of time or under saturation.
Valve Corporation | Helium | Roadshow theatrical release | helium | variable valve timing | Valve | Poppet valve | Limited release | Buddy's Circus#Release date discrepancy | Walschaerts valve gear | valve | limited release | wide release | Walshaert's valve gear | Variable valve timing | valve gear | Valve audio amplifier | The Omega Seamaster, a deep diving watch. The second crown (at 10 o'clock) is a Helium release valve | ''The Manhattan Love Suicides''; cover of the 2009 UK CD re-release on Squirrel Records | tap (valve) | Squadron Leader McNamara (left) as Executive Officer of No. 77 Squadron, talking with Flight Lieutenant John "Butch" Hannan following the latter's release from a North Korean Prisoner of war | roadshow theatrical release | Release the Pressure | Release (music) | Release liner | Piston valve | Pacemaker Pictures theatrical poster for the 1979 U.S release of ''Body Snatcher from Hell''. The film was double-billed with a reissue of Bloody Pit of Horror | No audible release | Kurush Deboo at the audio release of 'Shirin Farhad Ki Toh Nikal Padi | Justice Safety Valve Act of 2013 |
An Omega Seamaster typically has a stainless steel case and bracelet (Bond style with Omega symbol clasp), screw-in crown and caseback, engraved with the Omega hippocampus logo, up to 1200-metre water resistant, phosphorescent hands, unidirectional bezel, blue, silver or black dial with orange accents, sapphire crystal (anti-reflective) and helium release valve.
Rolex invented and introduced the first dive watches with a helium release valve in 1969, which prevented this helium buildup.
Omega also eventually introduced a helium release valve, in its Seamaster watch.