Types and functions of valves commonly used in thermal control of power plants in Pakistan

One, globe valve

The globe valve is a kind of valve commonly used in power plant thermal control, which is mainly used to control the flow of medium in the pipeline. Its function is to control the flow of the medium through the adjustment of the valve opening, so as to achieve the purpose of closing or opening the pipeline. The globe valve is widely used in the pipeline system and can be used to control the flow of steam, hot water, oil and other media.

Two, regulating valve

The regulating valve is mainly used to control the flow rate, pressure, temperature and other parameters of the medium in the pipeline. Its main function is to adjust the flow rate of the medium through the opening of the valve, so as to achieve the control of the medium parameters. Regulating valves are widely used in thermal control of power plants, and can be used to regulate the flow and temperature of hot water, steam and other media.

Three, check valve

The check valve is mainly used to prevent the backflow of the pipeline medium and ensure the normal flow direction of the pipeline medium. Its function is similar to a one-way valve, when the direction of the medium flow is opposite to the channel of the valve, the valve will automatically close to prevent the backflow of the medium. Check valves are also widely used in thermal control of power plants, and can be used to control the flow direction of hot water, steam and other media.

Four, safety valve

The safety valve is mainly used to protect the safety of pipelines and equipment to prevent the occurrence of overpressure or overheating. When the medium pressure or temperature in the pipeline exceeds a certain limit value, the safety valve automatically opens to release excess pressure or heat to protect the pipeline and equipment. Safety valve is widely used in power plant thermal control, usually used in hot water, steam and other media control.