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2. Heating, ventilation, and air conditioning - Wikipedia

   en.wikipedia.org/wiki/Heating,_ventilation,_and...

   Zones are controlled by multiple thermostats. In water heating systems the thermostats control zone valves, and in forced air systems they control zone dampers inside the vents which selectively block the flow of air. In this case, the control system is very critical to maintaining a proper temperature.

3. Thermostatic radiator valve - Wikipedia

   en.wikipedia.org/wiki/Thermostatic_radiator_valve

   A thermostatic radiator valve on position 2 (15–17 °C) Installed thermostatic radiator valve with the adjustment wheel removed A thermostatic radiator valve (TRV) is a self-regulating valve fitted to hot water heating system radiator, to control the temperature of a room by changing the flow of hot water to the radiator.

4. Hymatic - Wikipedia

   en.wikipedia.org/wiki/Hymatic

   It began making air compressors , [5] anti-g valves, [6] pressure reducing valves, stop valves and fuel system relief valves. [7] [8] Most well-known British aircraft in the 1950s and 1960s contained their valves and pneumatic equipment. It developed the fuel system for Concorde. [9] [10] Concorde carried around 22,000 gallons of fuel. Concorde ...

5. Honeywell - Wikipedia

   en.wikipedia.org/wiki/Honeywell

   Honeywell International Inc. is an American publicly traded, multinational conglomerate corporation headquartered in Charlotte, North Carolina.It primarily operates in four areas of business: aerospace, building automation, performance materials and technologies (PMT), and safety and productivity solutions (SPS). [2]

6. Honeywell Aerospace Technologies - Wikipedia

   en.wikipedia.org/wiki/Honeywell_Aerospace...

   Honeywell C-1 autopilot control panel Minneapolis-Honeywell Aeronautical Division logo from 1944. Garrett AiResearch's (now part of Honeywell) first major product was an oil cooler for military aircraft that allowed the Douglas DB-7, and Boeing's B-17 and B-25 bombers to fly at higher altitudes. [17]

7. Electrohydraulic servo valve - Wikipedia

   en.wikipedia.org/wiki/Electrohydraulic_servo_valve

   Simple hydraulic control valves are binary, they are either on or off. Servo valves are different in that they can continuously vary the flow they supply from zero up to their rated maximum flow, or until the output pressure reaches the supplied pressure. More complex servo valves can control other parameters.