ARI Armaturen STEVI H 488 EN - Manual (Page 10)

Page 2-10 Rev. 0040308000 0410
Operating and installation instructions
3-way/str.thr. control valves - STEVI
®
H 485-488
7.3.2 Conversion of valve with thread connections
Note:
Series 487 differs from Series 488 only in the dummy flange fitted for path B.
- Put the blind plate (Pos. 16) and gasket (Pos. 13) into the sleeve nut (Pos. 15).
- Screw it tight on the body (Pos. 1).
Tightning torques for the sleeve nut:
Refer to operating instructions for actuator concerned for installing
actuators !
ATTENTION !
Refer to item 10.0 and 11.0 before dismantling the valve.
DN Torque
15 35 Nm
20 45 Nm
25 65 Nm
32 130 Nm
40 170 Nm
50 300 Nm
Fig. 12: Series 488