The D0 Series top mounted hand operating mechanism adopts the T model thread inside it to transfer the axial movement. After the air supply is turned off at the site, the user can open or close the valve through rocking the handwheel. Compared with the side mounted handwheel, the top mounted handwheel has lower volume, but higher operating force. For valves with DN＞250, the top mounted hand operating mechanism adopts the bevel gear structure to open or close the valve in case of emergency. According to different travels, we provide users with five kinds of top mounted hand operating mechanisms.
ModelTravel (mm)Used for actuator
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| D2 | 16 | L102 |
| D3 | 25 | L103 |
| D4 | 40 | L104 |
| D5 | 60 | L105 |
| D6 | 100 | L106 |
