Z2FDS series double throttle/check valves are used to restrict flow in one direction while allowing free-flow in the opposite direction as check valves.
| Size | 6 | 10 | 16 | 22 |
| Operating pressure (MPa) | 31.5 | 31.5 | 31.5 | 31.5 |
| Flow rate (L/min) | 80 | 160 | 250 | 350 |
| Fluid temperature range（℃） | -30～80℃ | -30～80℃ | -30～80℃ | -30～80℃ |
| Weight(KGS) | 1 | 2.2 | 4.7 | 8 |
| Valve body（Material）Surface treatment | casting phosphating surface | |||
| Oil cleanliness | NAS1638 class 9 and ISO4406 class 20/18/15 | |||
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