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2. Pilot-operated relief valve - Wikipedia

   en.wikipedia.org/wiki/Pilot-operated_relief_valve

   The pressure at which the control pilot relieves is the functional set pressure of the PORV. When the pilot valve reaches set pressure it opens and releases the pressure from the dome. The piston is then free to open and the main valve exhausts the system fluid. The control pilot opens either to the main valve exhaust pipe or to atmosphere ...

3. Air-operated valve - Wikipedia

   en.wikipedia.org/wiki/Air-operated_valve

   An air-operated valve, also known as a pneumatic valve, is a type of power-operated pipe valve that uses air pressure to perform a function similar to a solenoid. As air pressure is increased, the compressed air starts to push against the piston or diaphragm walls which causes the valve to actuate.

4. Pilot valve - Wikipedia

   en.wikipedia.org/wiki/Pilot_valve

   Pilot valves are useful because they allow a small and easily operated feed to control a much higher pressure or higher flow feed, which would otherwise require a much larger force to operate; indeed, this is even useful when a solenoid is used to operate the valve. Pilot valves are often used in critical applications (e.g., emergency and SIS ...

5. Flow control valve - Wikipedia

   en.wikipedia.org/wiki/Flow_control_valve

   Pneumatically-actuated globe valves and diaphragm valves are widely used for control purposes in many industries, although quarter-turn types such as (modified) ball and butterfly valves are also used. Control valves can also work with hydraulic actuators (also known as hydraulic pilots). These types of valves are also known as automatic ...

6. List of valves - Wikipedia

   en.wikipedia.org/wiki/List_of_valves

   Pilot valve: regulates flow or pressure to other valves; Petcock, a small shut-off valve; Pinch valve, "beach ball valve": simple, single-part two-port check valve made from soft plastic and molded onto inflatable units such as beach balls, air mattresses, water wings; can be inflated by pump or by mouth

7. Bacteria and 'mold-like' substance found at Tom's of Maine ...

   www.aol.com/news/bacteria-mold-substance-found...

   An FDA inspection of a Tom’s of Maine manufacturing facility led to the discovery of “significant violations,” including bacteria in water used to make toothpaste and a black “mold-like ...

8. Here's what to know about bacteria in Tom's of Maine's ... - AOL

   www.aol.com/news/heres-know-bacteria-toms-maines...

   Tom's of Maine, which markets its products as made with "safe and hardworking natural ingredients," manufactures a host of personal hygiene products, from toothpaste to deodorant. The company was ...

9. This Lego Disney Advent calendar is only $20 at Walmart ... - AOL

   www.aol.com/lifestyle/this-lego-disney-advent...

   This Advent calendar is incredibly popular at Walmart right now. In the last 24 hours, 1,000 have been sold, according to the retailer. It's no surprise—it features some of the most popular ...