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2. Pressure tank - Wikipedia

   en.wikipedia.org/wiki/Pressure_tank

   Case 2 is a tank in use, with the air pressure at pressure P (gauge) and a water volume of V. Referring to the diagram on the right, a pressure tank is generally pressurized when empty with a "charging pressure" P c, which is usually about 2 psi below the turn-on pressure P lo (Case 1). The total volume of the tank is V t.

3. Separator (oil production) - Wikipedia

   en.wikipedia.org/wiki/Separator_(oil_production)

   The term separator in oilfield terminology designates a pressure vessel used for separating well fluids produced from oil and gas wells into gaseous and liquid components. A separator for petroleum production is a large vessel designed to separate production fluids into their constituent components of oil , gas and water .

4. High–low system - Wikipedia

   en.wikipedia.org/wiki/High–low_system

   The high–low system (or high–low pressure system, high–low propulsion system, high–low projection system) is a design of cannon and anti-tank warfare launcher using a smaller high-pressure chamber to store propellant. It allows a much larger projectile to be launched without the heavy equipment usually needed for large caliber weapons.

5. From pressure washers to tool kits, these are the Lowe’s 4th ...

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6. Blowout preventer - Wikipedia

   en.wikipedia.org/wiki/Blowout_preventer

   The U.S. government wanted the failed blowout preventer to be replaced in case of any pressure change that occurs when the relief well intersected with the well. [14] On September 3, 2010, at 1:20 p.m. CDT the 300 ton failed blowout preventer was removed from the well and began being slowly lifted to the surface. [ 14 ]

7. Well - Wikipedia

   en.wikipedia.org/wiki/Well

   A dug well in a village in Faryab Province, Afghanistan The difference between a well and a cistern is in the source of the water: a cistern collects rainwater where a well draws from groundwater. A well is an excavation or structure created on the earth by digging, driving, or drilling to access liquid resources, usually water.