demand valve उदाहरण वाक्य

The first recorded demand valve was invented in 1838 in France and forgotten in the next few years; another workable demand valve was not invented until 1860.
The set comprises a large cylinder charged with compressed air, linked to a demand valve combined into the face mask, secured with straps around the head.
If the counterlung volume is reduced sufficiently for the rigid cover to activate the feed gas demand valve, gas will be added until the diver finishes that inhalation.
It may also be used for surface-supplied diving or as diver through the demand valve of a diving regulator or the breathing loop of a diving rebreather.
In 1926 Maurice Fernez and Yves Le Prieur patented a hand-controlled constant flow regulator ( not a demand valve ), which used a constant flow ).

Ascent during which the diver is provided with breathing gas by another diver via a demand valve other than the one in use by the donor during the ascent.
Recreational divers do not usually have access to voice communication equipment, and it does not generally work with a standard scuba demand valve, so they use other signals.
This gas supply is regulated by a scuba first stage regulator, and plumbed into the primary air supply circuit via a bailout valve before it reaches the demand valve.
In 1937 and 1942 the French inventor, Georges Commeinhes from Alsace, patented a diving demand valve supplied with air from two gas cylinders through a full-face mask.
Conserving the often limited reserves of oxygen was easier with a demand valve, as oxygen was designed only to flow when either the button was depressed or the casualty inhaled.