Selection principle of pressure control valve for single-column aluminum alloy elevator
Pressure: The rated pressure of the pressure control valve should be greater than the maximum pressure that may occur in the hydraulic system of the aluminum alloy man lift to ensure the normal operation of the pressure control valve.
Pressure adjustment range: The system adjustment pressure should be within the legal pressure adjustment range.
Flow: The actual flow through the single mast man lift‘s’ pressure control valve should be less than the rated flow of the pressure control valve.
Structural type: According to the structure and working principle, the pressure control valve can be divided into two types: direct-acting and pilot-operated. The direct-acting pressure control valve has a simple structure and high sensitivity, but the pressure is greatly affected by the change of flow, and the pressure regulation deviation. It is not suitable for working under high pressure and large flow. However, in the buffer braking device of the telescopic aluminum alloy lift elevator, the sensitivity of the pressure control valve is required to be high, and a direct-acting relief valve should be used. The valve is high and is widely used in occasions with high pressure, large flow and high pressure regulation accuracy.
In addition, the installation and connection form of the valve, size and weight, price, service life, ease of maintenance, and supply of goods should also be considered.
According to the above selection principles, you can choose a direct-acting pressure valve, and then set the pressure, flow and related parameters according to the valve.
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