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Significance and Use
2.2 Figure 2 provides symbols for valves. Valves are categorized under the following headings: globe, angle, check, ball, butterfly, gate, relief, manifolds, control, noise control, and miscellaneous.
2.4 Figure 4 provides symbols for piping system–related instrumentation. These symbols are categorized under the following headings: pressure, temperature, flow, level, switches, alarms, and miscellaneous.
1.3 Where graphical symbols are required for an item or equipment not covered by this practice, the form and character of the symbol will be left to the discretion of the activity concerned, provided that the symbol used does not duplicate any of those contained herein, and is clearly understandable, subject to one interpretation only, or explained by a suitable note on the drawing when necessary.
1.4 Since symbolic representation does not usually involve exact or scale layout or the actual run or leads of piping, the same symbol may be used for all projections of the system (plan, elevations, and sections).
ICS Number Code 01.080.20 (Graphical symbols for use on specific equipment); 47.020.80 (Accommodation spaces)
UNSPSC Code 40171500(Commercial pipe and piping)
ASTM F1000-13, Standard Practice for Piping System Drawing Symbols, ASTM International, West Conshohocken, PA, 2013, www.astm.orgBack to Top