Numbers and Titles



40 90 00 Primary Control Devices
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IncludesDevices that adjust industrial process variables.
NotesWork results under 40 90 00 are typically for projects where the entire project has a distinct, process instrumentation/controls orientation.
See40 79 13 for current-to-pressure converters. 40 79 26 for voltage-to-pressure converters.
40 91 00Primary Control Valves
40 92 00Self-Contained Flow Controllers
40 93 00Linear Actuators and Positioners
40 94 00Self-Contained Pressure Regulators
40 95 00Rotary Actuators
40 96 00Saturable Core Reactors
40 97 00Variable Frequency Drives