Laying instructions - Spare Parts for EURO20 New - Operating Screw Replacement

Before proceeding, ensure the installation is no longer under pressure and has been drained.

1. Remove the operating accessory [11] [16]
2. Remove the dust seal [10] and fully unscrew the stem bearing [9]
3. Remove the protective wax from the body/cap connecting screws [2]
4. Unscrew the connecting screws [2]
5. Unscrew the wedge to separate it from the screw and remove the screw from the cap
6. Remove the stem bearing from the old screw
7. Remove the operating nut from the wedge and fit the new one
8. Replace the wedge assembly in the valve body
9. Reposition the cap and engage the body/cap fixing screws
10. Place the lower thrust washer [15] at the bottom of the stem bearing housing
11. Get back the upper thrust washer [17] and position it in the stem bearing housing
12. Get back the upper thrust washer [17] and position it in the stem bearing housing
13. Tighten the new screws, following the recommended torque values and tightening sequence for the model (see reverse page)
14. Tighten the stem bearing to the recommended torque (see reverse page)
15. Finally reposition the dust seal and the operating accessory