Transcription of PNEUMATIC CONTROL FUNDAMENTALS
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PNEUMATIC CONTROL FUNDAMENTALS57 ENGINEERING MANUAL OF AUTOMATIC PNEUMATIC CONTROL ..61 Air Supply and Operation ..61 Restrictor ..62 Nozzle-Flapper Assembly ..62 Pilot Bleed System ..62 Signal Amplifier ..63 Feed and Bleed System ..63 Sensing Elements ..63 Bimetal ..63 Rod and Tube ..64 Remote Bulb ..64 Averaging Element ..64 Throttling Range Adjustment ..64 Relays and Switches ..65 Air Supply ..65 Air Compressor ..65 Air Drying Techniques ..66 General ..66 Dry Air Requirement ..66 Condensing Drying ..67 High-Pressure Drying ..67 Refrigerant Drying ..67 Desiccant Drying ..67 Pressure Reducing Valve Station ..68 Air Filter ..68 Pressure Reducing valves ..69 Single-Pressure Reducing Valve.
a valve or damper (Fig. 1). In a typical control system, the final control element (a valve or a damper) is selected first because it must produce the desired control results. For example, a system designed to control the flow of water through a coil requires a control valve. The type of valve, however, depends on whether the water is intended
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