I
MO-D52/R52
11
9/21 Rev. 0
Manual override
The manual operation unit is an optional accessory used to open and close this control valve when
operational air supply is not available. The structure is shown in Fig. 10 and 11.
(1) Model: D52B/R52B, D52C/R52C
Fig. 10. Direct action type
Fig. 11. Reverse action type
No.
Name
No.
Name
No.
Name
201 MO cover
209 Thrust ring
221
Conical washer for hex socket head
202 Worm and handle shaft 210 Guide shaft
222 U-nut with cap
203 Worm wheel
215 DU bushing
223 Spring washer
204 Screw rod
216 DU bushing
224 DU bushing
205 Crank handle
217 C-ring
225 Grip
206 Slide nut
218 C-ring
226 C-ring
207 Worm wheel guide
219 Key
227 C-ring
208 Worm guide holder
220 Hex socket head bolt
228 Key
