Flowserve TX2 Triple Offset High Performance Butterfly Valve IOM - Manual (Page 25)

Flow Control Division
25
Fig.23
Each valve will be marked with an arrow to show
Recommended direction of flow
Each valve will have a casting mark as shown in Fig 24
Each valve will have the following information
in the casting as shown in Fig 25 and 26
Series Number : 870
Size: 20
Material
Heat number
Fig. 25 Fig. 26
Fig. 24