Floating ball valve
Floating ball valve is a valve composed of crank arm and floating ball, which can be used to automatically control the liquid level of water tower or pool. It has the characteristics of simple maintenance, flexible and durable, high accuracy of liquid level control, water level not disturbed by water pressure, close opening and closing, no leakage, etc.
main features
It is a sphere without support shaft. The sphere is clamped by two seats, which is in a "floating" state. It is mainly used to cut off, distribute and change the direction of medium flow in pipeline. Floating ball valves are mainly seat seal design, reliable reverse seal valve stem, fire safety static.
Floating ball valve
Floating ball valve
Electrical function, automatic pressure relief and locking device and other structural features.
Floating ball valves are suitable for chemical industry, petroleum, gas, metallurgy, and other industries as well as hydrogen sulfide containing medium, with many impurities and serious corrosion of gas pipelines.
The main structural features of floating ball valves are as follows:
1. The valve is provided with opening and closing position indication.
2. Locking device;
3. Stem anti-flight structure;
4. Antistatic devices;
5. Fire protection structure;
6. Seat sealing structure;
7. The middle flange (the connecting part between the valve body and the left body) has no leakage structure.
Floating ball valves can be divided into common carbon steel series (WCB&A105), stainless steel series (304,316), low temperature steel series (LCB, LCC), sulfur resistance series, etc. according to different requirements.
Floating ball valve is suitable for general industrial use.
Working principle
Floating always floats on the water. When the water rises, the floating also rises. When the drift rises, the connecting rod rises. The connecting rod is connected with the valve at the other end. When it rises to the position, the connecting rod supports the rubber piston pad and closes the water source. When the water level drops, the floatation also drops, and the connecting rod drives the piston pad to open.
Floating ball valve regulates the amount of liquid supplied by controlling the liquid level. Full-liquid evaporator requires liquid level to be kept high, so it is generally suitable to use floating ball expansion valve. The working principle of float valve is to control the opening or closing of a valve by reducing and raising the float ball in the float chamber under the action of 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 evaporators is the same. When the liquid level in evaporator drops, the liquid level in the float chamber also drops, so the float ball drops. The valve openness increases and the liquid supply increases depending on the lever action. Vice versa.
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