a pressure control valve
A pressure control and pressure technology, which is applied in fluid pressure actuation devices, accumulator devices, earth movers/shovels, etc., can solve problems such as bucket material spilling, boom cylinder retraction, etc.
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[0024] see Figure 1-6 As shown, a pressure control valve includes a valve sleeve 2, a screw sleeve 1, and a valve control assembly. The valve sleeve 2 is provided with a valve chamber 21 with an upper end opening, and the screw sleeve 1 is threadedly connected to the upper end of the valve sleeve 2. The bottom of the valve cavity 21 in the valve sleeve 2 is provided with a lower valve hole 22 axially downward, and the bottom of the valve hole 22 in the valve sleeve 2 is provided with a sliding hole 23 downward along its axial direction, so The screw sleeve 1 is provided with an upper valve hole 18 on the end face facing the valve chamber 21; the side of the valve sleeve 2 is provided with a P port communicated with the valve chamber 21, and an X port communicated with the lower valve hole 22. The lower end of the valve sleeve 2 is provided with an A port communicating with the sliding hole 23, and the side of the screw sleeve 1 is provided with a T port communicating with the...
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