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Ball Valve & Actuator [26] Biometric Readers [27] Building Operation Expert (BOE) Butterfly Valve & Actuator [28] Cable Management [29] Circuit Protection; Comfort Point Open [30] Command and Control Suite [31] Damper Actuator (or DCA) [32] Digital Video Manager [33] equIP Camera Series [34] Electrical Balancing Valve - Kombi Series [35 ...
A damper may be used to cut off central air conditioning (heating or cooling) to an unused room, or to regulate it for room-by-room temperature and climate control - for example, in the case of Volume Control Dampers. [1] Its operation can be manual or automatic. Manual dampers are turned by a handle on the outside of a duct. Automatic dampers ...
The Butz Thermo-Electric Regulator Company was founded in 1885 when the Swiss-born Albert Butz invented the damper-flapper, a thermostat used to control coal furnaces, bringing automated heating system regulation into homes. [11] In 1886, he founded the Butz Thermo-Electric Regulator Company.
Engines which require a tighter control of temperature, as they are sensitive to "Thermal shock" caused by surges of coolant, may use a "constant inlet temperature" system. In this arrangement the inlet cooling to the engine is controlled by double-valve thermostat which mixes a re-circulating sensing flow with the radiator cooling flow.
With zoned systems (some residential, many commercial systems — several thermostats controlling different "zones" in the building), the thermostat will cause small electric motors to open valves or dampers and start the furnace or boiler if it is not already running. Most programmable thermostats will control these systems.
A pneumatic actuator mainly consists of a piston or a diaphragm which develops the motive power. It keeps the air in the upper portion of the cylinder, allowing air pressure to force the diaphragm or piston to move the valve stem or rotate the valve control element. Valves require little pressure to operate and usually double or triple the ...