Standard Practice for Piping System Drawing Symbols

2.1 Figure 1 provides symbols for strainers, separators, and filters.

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.

2.3 Figure 3 provides symbols for valve appendages such as actuators and locking devices. Symbols shown on Fig. 3 are to be combined with the appropriate symbol from Fig. 2.

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.

2.5 Figure 5 provides symbols for fans, pumps, and turbines.

2.6 Figure 6 provides symbols for plumbing components.

2.7 Figure 7 provides symbols for pipe and pipe fittings.

2.8 Figure 8 provides symbols for noise control components and designations. These symbols are generally used for submarine design.

2.9 Figure 9 provides symbols for transitions. These symbols identify transitions such as pipe material or pipe schedule changes.

2.10 Figure 10 provides symbols for miscellaneous components. These are components which could not be classified under the above categories. Examples include heat exchangers, flasks, and sea chests.

2.11 Figure 11 provides symbols for grooved piping.