07 Showing Fittings on the P&ID - P&ID Course 101

Understand P&ID details, Operational and Safety Guidelines
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- Reducers and enlargers are tapered fittings that allow for a gradual transition between different pipe sizes. This helps prevent turbulence and flow restrictions when connecting pipes of mismatched diameters.
- Class breaks use flanges with the same number of bolt holes but with thicker material to connect different pressure rating systems. They maintain the integrity of the lower rating system while allowing connection to higher pressure lines.
- Spectacle blinds provide positive isolation during maintenance by having a removable insert that can fully block flow. This ensures downstream sections stay isolated when the upstream line may still be pressurized.
- P&IDs (Piping and Instrument Diagrams) are schematic drawings intended to convey piping information like flow direction, equipment connections, and instrumentation rather than precise geometric details. Isometrics provide more accurate dimensional representations.
- Other common pipe fittings not explicitly mentioned but often used include elbows, tees, crosses, laterals, threaded/welded connectors and various types of flanges. Selection depends on application requirements.
- Proper use of fittings is important for safety, performance and constructability.
Piping, P&ID, fittings, valves, flanges, reducers, enlargers, class breaks, spectacle blinds
#piping #PID #pipefittings #valves #flanges
▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬
0:00 - Introduction to Fittings
0:39 - Importance of Reducers and Enlargers
1:19 - Class Breaks and Flange Ratings
1:55 - Reasons for Different Flange Ratings
2:28 - Interface of High and Low Pressure Systems
3:23 - Safety Measures for HP/LP Interface
4:03 - Spectacle Blind Function and Safety
4:39 - Maintenance Isolation with Spectacle Blinds
5:17 - T Fittings and Pressure Drop Considerations
5:56 - Overview of P&ID Schematic Drawings
6:33 - Exceptions in P&ID Representation for Safety