| Type | Port size | Effective area | CV value | Control type | Valve type |
operatinf pressure |
| ST-402 | PT1/4 | 24mm | 1.20 | Hand return | 5/2 way | 0˜10/kgf/cm |
| ST-403 | PT3/8 | 24mm | 1.20 | |||
|
ST-402A |
PT1/4 | 24mm | 1.20 | Spring return | ||
| ST-403A | PT3/8 | 24mm | 1.20 |
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