On/Off V. Proportional Control
Learn about the differences between on/off and proportional control and the typical applications when each temperature control type should be used.
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The VA Series combines a pneumatic actuator and fast on-off control valve into one body, eliminating packing glands, actuators and mounting kits. There are no exposed moving parts, eliminating pinch points and increasing operator safety. Since the actuator is part of the valve, costs are greatly reduced when compared to standard actuated valves. Operating life has been tested to well over 1,000,000 cycles, the balanced design reduces friction and wear. The stroke is linear and parallel to the flow, dramatically reducing the required force to close or open the valve. The internal waterway design was designed for optimum flow characteristics.
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VA Series: https://assuredautomation.com/VA/index.php