Pneumatic flow valve is a multi-functional valve that uses a high-precision pilot method to control flow. It can be used in water pipes to control flow and water pressure to ensure that the flow of water remains unchanged, and to control the flow within a range. Inside. With the existence of the throbbing flow valve, although the upstream pressure of the main valve changes, it will not affect the downstream flow. At present, the pneumatic flow method and connection method can be divided into threaded type, flange type, and welding type. The way to adjust the water flow can be divided into manual and automatic. Next, Xiaobian will explain the characteristics of the pneumatic flow valve in detail.。

　　气

The dynamic flow method is to control the flow rate of the orifice by changing the resistance of the liquid at the orifice under the condition of a certain pressure difference, so as to solve the related actuators, a kind of valve of the movement speed, and the pneumatic flow rate. The valve includes the diverter and collector valve, the speed control valve, the throttle valve overflow throttle valve, etc. The installation method is generally horizontal installation, and the user can choose the size of the pneumatic flow valve according to the diameter of the pipeline.

The pneumatic flow valve is different from the conventional throttle valve. In fact, a purely mechanical method is used to reduce the size of the watershed area or the orifice plate can be used to reduce the flow rate and the degree of loss during the throttling process to a large extent. , and the controlled sensitivity is relatively high, the debugging is simple, safe and reliable, and the service life is longer. Pneumatic flow valve can achieve the balance of system flow without external power supply. This is achieved by fixing the size of the pressure difference before and after the aperture, so it is also called a constant flow valve.

The object of the pneumatic flow valve is the flow, which can lock the amount of water flowing through the valve, not for the balance of resistance. He can solve the problem of dynamic imbalance of the system: in order to maintain the high-efficiency operation of a single refrigerator, boiler, cooling tower, and heat exchanger, it is necessary to control the flow of these devices to be fixed at the rated value; from the end of the system, in order to avoid The interplay of dynamic regulation also requires flow restriction at the end device or branch.

The problem that should be paid attention to in the design of pneumatic flow valve is that the disadvantage of pneumatic flow valve is that the valve has poor working requirements. Generally, the working pressure difference of the product is 20KPa. If it is installed on an unfavorable circuit, it is bound to require an additional 2 meters of water column for the circulating pump. The working head should be installed at the near end, and the far end should be uneasy. Do not install this flow control valve when the distance between the user and the heat source is greater than 80% of the heating radius.

After reading the above content, you must have a clear understanding of some of the characteristics of the pneumatic flow valve. If you are interested in this product, you can check more related content.