![]() ![]() Because of this, a large amount of the symbology appearing on P&IDs depicts instrumentation and instrument loops. ![]() Vacuum Pump Air Driven Diaphragm Pump Centrifugal Pump Rotary Pump Sump Pump Submersible Pump Motor Driven Diaphragm Pump Gear PumpĦ Instrument Symbols One of the main purposes of a P&ID is to provide functional information about how instrumentation in a system or piece of equipment interfaces with the system or piece of equipment. In such cases, information concerning the valve type may be conveyed by the component identification number or by the notes and legend section of the drawing however, in many instances even that may not hold true.ĥ Pump Symbols Pumps are drawn showing the direction of flow represented by an arrow. ![]() Gate or Generic Valve Hand Controlled Valve 3-Way Mixing Gate Valve Generic Control Valve Butterfly Valve Slide Gate Valve Triple Duty Valve It should be noted that globe and gate valves will often be depicted by the same valve symbol. We will be looking at three different groups of Component Symbols and one group of Instrument Symbols, so lets take a look at our first group of Component Symbols, Valve Symbols.Ĥ Valve Symbols Valves are used to control the direction, flow rate, and pressure of fluids. To become an expert in P&ID symbology is above the level of this course. Can you make out any of the symbols? We will briefly discuss some of the symbols found on this drawing and other common symbols. The reader may expand his or her knowledge by obtaining and studying the appropriate drafting standards used at his or her facility.Ģ Learning Objectives Given component and instrument symbols, identify them with 90% accuracy Given component and instrument symbols, identify component symbols with 90% accuracy Given component and instrument symbols, identify instrument symbols with 90% accuracy Given component and instrument symbols, identify them with 90% accuracy Given component and instrument symbols, identify component symbols with 90% accuracy Given component and instrument symbols, identify instrument symbols with 90% accuracyģ Without a knowledge of the symbology used a drawing can look as if it was created in a foreign language and un recognizable. ![]() The symbols presented herein are those most commonly used in engineering P&IDs. The reader should note that this module is only representative of common symbology, rather than being all-inclusive. When the symbology is mastered, the reader will be able to interpret most P&IDs. Module 5 To read and interpret piping and instrument drawings (P&IDs), the reader must learn the meaning of the symbols. Presentation on theme: "Component And Instrument Symbols"- Presentation transcript: ![]()
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