-| 21 | 14 | Valve | | |
-| 22 | 4 | Check Valve | | |
-| 23 | 9 | Valves and Fittings with Safety Function | | |
-| 24 | 24 | Fittings | | |
-| 25 | 9 | Graphical Symbols for Piping | | |
-| 26 | 6 | Apparatus Elements | | |
+| 21 | 14 | Valve | BK-2020-04-PID-1-SHT6 | drawn |
+| 22 | 4 | Check Valve | BK-2020-04-PID-1-SHT6 | drawn |
+| 23 | 9 | Valves and Fittings with Safety Function | BK-2020-04-PID-1-SHT6 | drawn |
+| 24 | 24 | Fittings | BK-2020-04-PID-1-SHT6 | drawn |
+| 25 | 9 | Graphical Symbols for Piping | BK-2020-04-PID-1-SHT6 | drawn |
+|-----+-------+-------------------------------------------------------+-----------------------+--------|
+| 26 | 6 | Apparatus Elements | BK-2020-04-PID-1-SHT7 | |