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The newly-combined entity, Socony-Vacuum Corp, was the world's third-largest oil company. [4] Socony-Vacuum gas station in Tiberias, Palestine, 1946. In 1933, Socony-Vacuum and Standard Oil Company of New Jersey (which had oil production and refineries in Indonesia) merged their interests in the Far East into a 50–50 joint venture.
A pressure switch is a form of switch that operates an electrical contact when a certain set fluid pressure has been reached on its input. The switch may be designed to make contact either on pressure rise or on pressure fall. Pressure switches are widely used in industry to automatically supervise and control systems that use pressurized fluids.
After the 1970s, vacuum switches began to replace the minimal-oil switches in medium-voltage switchgear. In the early 1980s, SF6 switches and breakers were also gradually replaced by vacuum technology in medium-voltage application. As of 2018, a vacuum circuit-breaker had reached 145 kV with a short-circuit rating of 200 kA. [4]
Using vacuum pump oil as the working fluid in a barometer has led to the creation of the new "World's Tallest Barometer" in February 2013. The barometer at Portland State University (PSU) uses doubly distilled vacuum pump oil and has a nominal height of about 12.4 m for the oil column height; expected excursions are in the range of ±0.4 m over ...
The experiment uses a simple barometer to measure the pressure of air, filling it with mercury up until 75% of the tube. Any air bubbles in the tube must be removed by inverting several times. After that, a clean mercury is filled once again until the tube is completely full. The barometer is then placed inverted on the dish full of mercury.
A letter from my father to T. E. Mobley of Standard Vacuum in June 1942 . . . reported that the Yu Men wells then had a capacity of about 1,000 barrels of oil and 10,000 gallons of gasoline a day, except in winter when cold weather caused the oil to congeal. This was the first major oil field in China.
These are commonly used in automobiles to alter the behavior of vacuum switches, vacuum motors, and other vacuum devices. The engine in a common automobile produces almost 20 inches of mercury (68 kPa ) of vacuum, and this pressure differential has been utilized for everything from automatic locks and windshield wipers to operating emissions ...
The tube is sealed during manufacture with the sealed end containing a vacuum. [1] Mercury is a useful material to use in a manometer because of its high density. This means that a much shorter column is needed compared to water. [2] For instance, the pressure represented by a column of 100 mm of water is just under 7.4 mm of mercury . [3]