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2. Instrumentation in petrochemical industries - Wikipedia

   en.wikipedia.org/wiki/Instrumentation_in...

   Valves are actuated by an electric motor, hydraulic fluid or air. For air-operated control valves, electrical signals from the control system are converted to an air pressure for the valve actuator in a current/pneumatic I/P converter. Upon loss of pneumatic or hydraulic pressure valves may fail to an open (FO) or fail to a closed (FC) position.

3. Degasser - Wikipedia

   en.wikipedia.org/wiki/Degasser

   A degasser is a device used in the upstream oil industry to remove dissolved and entrained gases from a liquid. In drilling it is used to remove gasses from drilling fluid which could otherwise form bubbles. [1] [2] In a produced water treatment plant it is part of the process to clean produced water prior to disposal.

4. Drum pump - Wikipedia

   en.wikipedia.org/wiki/Drum_pump

   Drum pump, barrel pump, and transfer pump refer to pumps that are used to empty barrels, tanks, IBCs and drums. [1] Many liquids used on manufacturing and processing plants are delivered in 100 or 200 litre barrels and are too heavy to tip to empty the liquids inside. Drum pumps range from simple siphon based devices to sophisticated highly ...

5. Vacuum truck - Wikipedia

   en.wikipedia.org/wiki/Vacuum_truck

   The pump is designed to pneumatically suck liquids, sludges, slurries, or the like from a location (often underground) into the tank of the truck. The objective is to enable transport of the liquid material via road to another location. Vacuum trucks transport the collected material to a treatment or disposal site, for example a sewage ...

6. Airlift pump - Wikipedia

   en.wikipedia.org/wiki/Airlift_pump

   A geyser pump, an improved airlift pump, powered by compressed air, raises fluid by forcing rising bubbles to displace fluid. 50. air supply 52. air inlet port 58. liquid supply 60,62. air supply lines 64. upper end of air tank 86 66,82. air ports 70. upper air inlet of u-shaped elbow 74 76 air outlet 84. fluid intake 65. riser tube 88 ...

7. Dissolved air flotation - Wikipedia

   en.wikipedia.org/wiki/Dissolved_air_flotation

   Dissolved air flotation (DAF) is a water treatment process that clarifies wastewaters (or other waters) by the removal of suspended matter such as oil or solids. The removal is achieved by dissolving air in the water or wastewater under pressure and then releasing the air at atmospheric pressure in a flotation tank basin.