The float always floats on the water, and when the water rises, the float rises with it. As the float rises, so does the link. The connecting rod is connected to a valve at the other end, and when raised to a certain position, the connecting rod supports the rubber piston pad to seal off the water source. When the water level drops, the float also drops, and the connecting rod drives the piston pad to open.

The float ball valve regulates the liquid supply by controlling the liquid level. Full liquid evaporator requires the liquid level to maintain a certain height, generally suitable for the use of float expansion valve. The working principle of the float ball valve is to control the opening or closing of a valve by the reduction and elevation of the float ball in the float chamber by the liquid level. The float chamber is placed on one side of the full liquid evaporator, and the upper and lower balance tubes are connected with the evaporator, so the liquid level of the two is the same. When the liquid level in the evaporator drops, the liquid level of the float chamber also drops, so the float drops, relying on the lever to increase the opening degree of the valve and increase the amount of liquid supply. And vice versa.

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