Figure 1 should be a fast cut -off valve, only two states of switching and switching. Figure 2 can be a fast cut -off valve, or a fast cutting valve with regulating effect, because this valve has a hand handle automatic switching handle.
Figure 1 should be a fast cut -off valve, only two states of switching and switching. Figure 2 can be a fast cut -off valve, or a fast cutting valve with regulating effect, because this valve has a hand handle automatic switching handle.
Figure 2 can be a fast cut -off valve, or a fast cutting valve with regulating effect, because this valve has a hand handle automatic switching handle.
Figure 2 can be a fast cut -off valve, or a fast cutting valve with regulating effect, because this valve has a hand handle automatic switching handle.
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