Z1DS series are direct operated check valves.
| Size | 6 | 10 |
| Operating pressure(Mpa) | 31.5 | 31.5 |
| Flow rate(L/min) | 40 | 100 |
| Oil temperature range（℃） | -20～70 | -20～70 |
| Weight(KGS) | 0.9 | 2.3 |
| Valve body（Material）Surface treatment | casting phosphating surface | |
| Oil cleanliness | NAS1638 class 9 and ISO4406 class 20/18/15 | |
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