The balance valve is also called a one-way cut-off balance speed control valve, mainly consisting of a valve body main valve, a piston assembly, a control piston, a piston assembly, a damping assembly, and a valve sleeve. Its correct connection is: the oil port A receives the pressure source, the oil port B receives the load, and the X-oil port is connected to the oil. As the liquid flows from A to B freely, the main valve core 2 is turned on. For example, the differential pressure between the oil ports is smaller than the load pressure (for example, the system pressure is lowered, or the connection hose cracking from the commutation valve between the port A), the load pressure and spring assembly in the oil port B. Under the action of the spring force in 8, the main valve and the spool will close directly, and there is no internal leak in the cut, which can be safely positioned in the operation, which is not suddenly dropped. Features.

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