1.pressure reducing valve
The pressure reducing valve is a hydraulic control pressure reducing valve. Its main function is to monitor the maximum value of the water pressure in the pipeline. Once the water pressure in the pipeline exceeds or approaches the maximum designed to withstand, the pressure reducing valve will automatically weaken the water flow pressure in the pipeline until the pressure reducing valve or Normal values for piping design. The pressure reducing valve is mostly installed in the position where the water pressure is easy to rise sharply, such as the steep terrain and the direction change of the pipeline. The common structures of agricultural pressure reducing valves are diaphragm type and spring type.
2.air valve
The air valve, also known as the intake valve or the exhaust valve, is mainly used to regulate the amount of air in the pipeline. It is inevitable that air will enter the pipeline of the agricultural irrigation system. Appropriate air is conducive to the operation of the agricultural irrigation system, but too much or too little may be It will cause the pipeline system to rupture, so foreign irrigation pipe networks generally install the air valve in the irrigation valve. It is also being widely popularized in China, which is conducive to the normal operation of agricultural irrigation systems. Domestic air valves generally have two types of structures: single and double chambers. The selection is based on the volume of the irrigation system. The small size is single chamber, and the large one is double.
3.safety vavle
As an irrigation valve, the safety valve is actually similar to the pressure reducing valve. The safety valve mainly protects against the water hammer phenomenon in the pipeline. It is generally installed at the beginning of the pipeline to control the water pressure of the pipeline and prevent the water hammer problem. Commonly used safety valve structures are spring type, lever type and open type. How to choose depends on the range and size of pipe water pressure.
4.ball vavle
Ball valve is a type of valve in irrigation system valves that is simply used to open and close pipelines. The ball valve is characterized by simple and reliable structure, small size, light weight and low cost.
5.gate vavle
Gate valve is also a common opening and closing valve in agricultural irrigation valves, but gate valve has the characteristics of two-way opening and closing control, small resistance to water, small switching force, and relatively moderate.
