The Secret in the Refrigeration System Ball Valve, How Much Do You Know?
There is such a valve in the refrigeration system: ball valve. It can regulate the flow direction and flow rate of the medium; at the same time, it greatly saves labor, time and material costs during maintenance, making the refrigeration system more efficient and economical.
So the question is, how to choose a ball valve? How does it work?
Ball valve working principle
A ball valve is a valve used to control the flow of refrigerant in a refrigeration system. It usually consists of a ball, a valve body and a valve stem. According to the shape of the ball opening in the ball valve, it can be divided into O-type ball valve and V-type ball valve. The O-type ball valve is most suitable for use as a switch and cut-off valve, while the V-type ball valve is more suitable for use as a regulating valve due to its more linear flow characteristics.
When the valve stem is rotated to align with the hole, refrigerant can flow freely through the hole, achieving a fully open state. At this time, the refrigerant in the refrigeration system can flow smoothly to achieve maximum cooling effect. When the valve stem rotates to be vertically aligned with the hole, the refrigerant cannot flow through the hole, achieving a fully closed state. At this time, the refrigerant in the refrigeration system stops flowing.
Reasons for using ball valves in refrigeration equipment
The fluid resistance of the ball valve in the refrigeration system is almost zero, it has the advantages of quick and convenient opening and closing, good sealing, long service life, and wide operating temperature range. Ball valves commonly used in refrigeration systems have the following uses:
1. Automation control
The ball valve is installed in the system pipeline and can cut off distribution and change the flow direction of the medium. Especially the electric ball valve can replace the solenoid valve to achieve automatic control.
2. Maintenance
Installing ball valves in your refrigeration system can make maintenance and upkeep easier and more convenient. For example, when it is time to replace the oil filter, filter dryer or perform routine maintenance, the ball valve can easily disassemble and replace parts. In addition, installing a ball valve can also significantly save labor, time and material costs, making your refrigeration system more efficient and economical.
3. Adjust system load
In the refrigeration system, too much or too little refrigerant flow may have an adverse impact on the refrigeration effect of the system. Ball valves are used to respond quickly, quickly adjust the system load, regulate the refrigerant flow, and respond to various emergencies in a timely manner.
Ball valve selection
Whether it is air conditioning ball valves or refrigeration ball valves, their principles are similar. They are both used to control the flow of fluid (refrigerant). They both use a ball as the closing element of the valve, and adjust the on-off and flow rate of the fluid by rotating the ball. There may be some differences in some details when selecting air conditioning ball valves and refrigeration ball valves, mainly due to differences in application environments and working conditions.
The main differences are as follows:
1. Temperature range: Freezing and refrigeration ball valves usually need to work at lower temperatures and can withstand lower temperatures. Refrigeration and air conditioning ball valves are usually used in indoor air conditioning systems, and their working temperatures are relatively high.
2. Pressure level: Refrigeration and refrigeration ball valves usually need to withstand higher pressures.
3. Sealing materials: There may be lower temperatures and higher pressures in refrigeration and refrigeration systems. The sealing materials of refrigeration and refrigeration ball valves usually need to have better low temperature resistance and high pressure resistance.
Therefore, when selecting a ball valve, the capacity of the valve should be used as the basis. When selecting the ball valve, the pressure difference before and after the valve, refrigeration capacity, etc. should be considered. The appropriate ball valve should be selected according to the specific application requirements and working conditions, such as common carbon dioxide ball valves, welded ball valves, etc. Ball valves, electric ball valves, etc.