HAWE flow valve HAWE solenoid valve

HAWE flow valve HAWE solenoid valve
The new feature of the Hawei proportional directional valve PSL series product is the floating valve position, which can switch between zero leakage balance valve or hydraulic control check valve in the control system to achieve this function. At the floating position, the oil cylinder connection is connected to the return pipe, and the piston rod can move back and forth under external force. The auxiliary equipment can be adjusted to the ground without external force, and it is effectively used in sowing, fertilizing, and spraying pesticides. The hydraulic pipes between the tractor and its ancillary equipment can be connected or disconnected without pressure. When in the middle position, zero leakage ensures that the cylinder is fixed in place. The hydraulic functions of the proportional directional valve include: lifting, lowering, and extending. Several hydraulic actuators can work independently at different speeds and loads simultaneously. Currently, two out of the four different sizes of PSLs have floating valve positions. The maximum operating pressure is 420 bar, and the maximum flow rate can reach 60 l/min or 120 l/min. All pressure components are made of steel and have a compact structure. This PSL can meet the required durability even in harsh environments. The PSL series proportional directional valve control module is used on tractors, allowing farmers to flexibly use farming machinery. Hawei has developed a new type of connecting block for PSL proportional directional valves, allowing farmers to connect trailers of different configurations to tractors. Due to the independence of hydraulic systems such as loaders, lawn mowers, and potato harvesters from the tractor's hydraulic system, regardless of whether the pump in the tractor's hydraulic system is a fixed displacement pump or a variable displacement pump, the connecting block can supply oil to the trailer's hydraulic system through any pump. The operator can easily switch between the tractor and trailer manually (or electronically) through a three position two-way valve installed on the connection block. No need to install another hydraulic component, the connection block can be adjusted between two pressures, so the connection block occupies very little space. The * pressure levels of the imported pressure remain constant, and the second pressure can be reduced to the same level as the hydraulic actuator. The connection block is a variant of the PSL type proportional directional cut-off valve, with many hydraulic functions such as lifting, lowering, tilting cutting, or switching the tailboard. In addition, the zero leakage of the shut-off valve not only provides effective, but also ensures safe operation and low energy consumption. When the hydraulic circuit is closed, the pressure remains constant and the position of the tailboard remains at the expected position. Due to the constant pressure, there is no need to pump oil, which reduces the use of fuel. The shut-off valve can be installed directly to the connection block without the need for a pipeline. The operating pressure of the connecting block can reach 420 bar, and the maximum flow rate is 80 L/min. The operating pressure of the additional function of the shut-off valve is up to 315 bar, and the maximum flow rate is 20L/min. Due to the operating pressure of agricultural machinery being about 250 bar, the lifespan of components is longer than expected.

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HAWE flow valve HAWE solenoid valve