Basic introduction of float valve

The floating ball valve is a ball without a supporting shaft. The ball is held in a "floating" state by two valve seats. It is mainly used for cutting, distributing and changing the flow direction of the medium on the pipeline. The floating ball valve mainly has the structural characteristics of seat sealing design, reliable reverse sealing valve sealing rod, fire-proof electrostatic function, automatic pressure relief and locking device.
Floating ball valve is suitable for: chemical, petroleum, natural gas, metallurgy, and other industries, as well as hydrogen sulfide-containing media, long-distance natural gas pipelines with many impurities and serious corrosion.
The main structural features of the floating ball valve are:
1. The valve is provided with open and closed position indication;
2. Locking device;
3. Stem anti-flying structure;
4. Anti-static device;
5. Fireproof structure;
6. Unique valve seat sealing structure;
7. The middle flange (the connection between the valve body and the left body) has no leakage structure.
According to different application requirements, the floating ball valve is divided into: ordinary carbon steel series (WCB&A105); stainless steel series (304, 316); low temperature steel series (LCB, LCC); anti-sulfur series, etc.
Floating ball valves are suitable for general industrial use.
Working principle The float must always float on the water, and when the water level rises, the float also rises. When the float rises, the connecting rod also rises. The connecting rod is connected with the valve at the other end. When it rises to a certain position, the connecting rod supports the rubber piston pad to close the water source. When the water level drops, the float also drops, and the connecting rod drives the piston pad to open. The float valve adjusts the liquid supply by controlling the liquid level. The flooded evaporator requires the liquid level to maintain a certain height, and a floating ball expansion valve is generally suitable.
The working principle of the floating ball valve is to control the opening or closing of a valve by relying on the lowering and raising of the floating ball in the floating ball chamber by the action of the liquid level. The float chamber is placed on one side of the flooded evaporator, and the upper and lower balance pipes are connected to the evaporator, so the liquid level of the two is the same. When the liquid level in the evaporator drops, the liquid level in the floating ball chamber also drops, so the floating ball drops, and the opening of the valve is increased by lever action to increase the liquid supply. vice versa. Function and price comparison The plastic float valve has the function of automatically opening and closing the pipeline to control the water level.