4-17
Direct Action Type (Model PSA1D) Reverse Action Type (Model PSA1R)
Figure 4-12 Bolts and Nuts of Actuator
Table 4-5. Tihtening Torques of Bolts and Nuts of Actuator
Unit: (N.m{kgf-cm})
No. Materials
Model
PSA1
1 SK5 S45C M14
45-70
{460-710}
2 S30C M12
35-50
{360-510}
3 SUS304 M8
15-20
{150-200}
4 SUS304 M8
10-15
{100-150}
Note: Install the rain cap on the reverse actuator as follows. Drive the cap into the diaphragm
case until the shoulder (brim) of the cap is brought into contact with the diaphragm
case, then drive the cap further into the diaphragm case by half a turn.
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