(Valve Actuators and Positioners)
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The economizer portion of an air-handling system is not only responsible for reducing the operating cost of the system, but more importantly, it has to provide a sufficient volume of outside air at... (View Full Article)
(Valve Actuators and Positioners)
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In 1975, when BELIMO was established, pneumatic actuators accounted for 50% of the actuators used in Europe. Today, 95% of those installed are electronic and, in Japan, 80%. BELIMO electronic has over... (View Full Article)
(Valve Actuators and Positioners)
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Valve sizing cannot be accurate without firm understanding of the hydronic system. While valves are the final control element, the balancing, coil sizing, coil response curve, and the piping losses... (View Full Article)
(Valves)
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This article describes a field study conducted on two university campuses in Massachusetts and Colorado during the cooling season of 2011. The purpose of this experimental study was to alleviate ??... (View Full Article)
(Valve Actuators and Positioners)
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Belimo direct coupled actuators were designed to minimize installation cost by what has come to be known as the "Belimo" concept. This concept of directly coupling to the damper shaft was invented in... (View Full Article)
(Valves)
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In HVAC plants, water distribution can be accomplished at constant or variable fl ow. Each type of distribution system has advantages and disadvantages. Today variable fl ow systems using electronic... (View Full Article)
(Valve Actuators and Positioners)
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It is good practice to power electronic or digital controllers from a separate power transformer than that used for actuators or other end devices. The power supply design in our actuators and other... (View Full Article)