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2. Pressure tank - Wikipedia

   en.wikipedia.org/wiki/Pressure_tank

   A simple control system for a water well. Referring to the figure on the left, a submersible water pump is installed in a well. The pressure switch turns the water pump on when it senses a pressure that is less than P lo and turns it off when it senses a pressure greater than P hi. While the pump is on, the pressure tank fills up.

3. Pressure switch - Wikipedia

   en.wikipedia.org/wiki/Pressure_switch

   Switch a household well water pump automatically when water is drawn from the pressure tank. Switching off an electrically driven gas compressor when a set pressure is achieved in the reservoir Switching off a gas compressor, whenever there is no feed in the suction stage.

4. Backflow prevention device - Wikipedia

   en.wikipedia.org/wiki/Backflow_prevention_device

   Backflow prevention device. The simplest, most reliable way to provide backflow prevention is to provide an air gap.An air gap is simply an open vertical space between any device that connects to a plumbing system (like a valve or faucet) and any place where contaminated water can collect or pool.

5. Reduced pressure zone device - Wikipedia

   en.wikipedia.org/wiki/Reduced_pressure_zone_device

   A reduced pressure zone device (RPZD, RPZ, or RPZ valve) is a type of backflow prevention device used to protect water supplies from contamination. RPZDs may also be known as reduced pressure principle (RP), reduced pressure principle backflow prevention devices, [1] [2] reduced pressure zone assemblies (RPZA), [3] or reduced pressure principle ...

6. Well control - Wikipedia

   en.wikipedia.org/wiki/Well_control

   Well control is the technique used in oil and gas operations such as drilling, well workover and well completion for maintaining the hydrostatic pressure and formation pressure to prevent the influx of formation fluids into the wellbore.

7. The #1 High-Protein Snack for Better Heart Health, According ...

   www.aol.com/1-high-protein-snack-better...

   Combined with other heart disease risk factors, such as type 2 diabetes or high blood pressure, smoking increases the likelihood of developing heart disease even more. However, quitting can be ...