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2. Fan coil unit - Wikipedia

   en.wikipedia.org/wiki/Fan_coil_unit

   These motors are sometimes called DC motors, sometimes EC motors and occasionally DC/EC motors. DC stands for direct current and EC stands for electronically commutated.. DC motors allow the speed of the fans within a fan coil unit to be controlled by means of a 0-10 Volt input control signal to the motor/s, the transformers and speed switches associated with AC fan coils are not required.

3. Fuel control unit - Wikipedia

   en.wikipedia.org/wiki/Fuel_control_unit

   Closing the valve too quickly while trying to reduce power output could cause a lean die-out, where the airflow through the engine blows the flame out of the combustion chamber and extinguishes it. Adding fuel too quickly to increase power can damage the turbines due to excessive heat, or the sudden rise in combustion chamber pressure may cause ...

4. Helly Hansen - Wikipedia

   en.wikipedia.org/wiki/Helly_Hansen

   Helly Hansen (HH) is a Norwegian manufacturer and retailer of clothing and sports equipment, owned by the Canadian retail chain Canadian Tire and operated as a subsidiary. Currently headquartered in Oslo , it was previously headquartered in Moss, Norway , from its founding in 1877 until October 2009.

5. Vienna Game, Frankenstein–Dracula Variation - Wikipedia

   en.wikipedia.org/wiki/Vienna_Game,_Frankenstein...

   Jacob Øst-Hansen deployed it against John Nunn in Teesside 1972. [1] Vasyl Ivanchuk used it against Viswanathan Anand in Roquebrune in 1992 in a game that ended in a draw. Alexei Shirov played it as Black in a simultaneous exhibition in Canada 2011. In 2019, Hikaru Nakamura played it in a rapid game in St. Louis against Jan-Krzysztof Duda. [2]

6. Two- and four-stroke engines - Wikipedia

   en.wikipedia.org/wiki/Two-_and_four-stroke_engines

   The shaft of the four-stroke piston rotates twice as fast as the shaft of the two-stroke piston, and the two-stroke part always runs at half speed. This ensures that both parts work optimally regarding fuel consumption at all times. The same principles apply to having two distinct engines, but the design of the M4+2 is much simpler.

7. Air-operated valve - Wikipedia

   en.wikipedia.org/wiki/Air-operated_valve

   [1] [2] 3-way valves pressurize and exhaust one outlet port to control a single-acting cylinder or pilot another valve. [3] Three-way valves may be used in pairs to operate a double-acting cylinder, thus replacing a four-way valve. A primary function of the 3-way valve is to save/store air that's compressed in high cyclic applications. 4-way ...

8. Four-way valve - Wikipedia

   en.wikipedia.org/wiki/Four-way_valve

   Two flow positions on a four-way valve. The four-way valve or four-way cock is a fluid control valve whose body has four ports equally spaced round the valve chamber and the plug has two passages to connect adjacent ports. The plug may be cylindrical or tapered, or a ball. It has two flow positions, and usually a central position where all ...

9. List of valves - Wikipedia

   en.wikipedia.org/wiki/List_of_valves

   Flow divider valve: a valve providing a plurality of output flows from a single fluid source [2] Flutter (Heimlich) valve: a specific one-way valve used on the end of chest drain tubes to treat a pneumothorax; Foot valve: a check valve on the foot of a suction line to prevent backflow; Four-way valve: was used to control the flow of steam to ...