Longda Valve

Let's study the automatic fire control valve above. The automatic fire control valve is generally divided into two parts: the valve body and the valve head. The valve body is usually produced in the form of copper smelting or hot forging. The measurement sensor of the valve head is usually divided into solid and liquid: liquid It is divided into two kinds: one is wax, the other is thermal memory alloy. Few of the popular liquid sensor media on the market are paraffin, and few are thermal memory alloys. 

 

The above is an easy introduction to the identification of valve bodies and valve heads that are rare on the market, for reference when choosing an automatic fire control valve. Fire control valve body: The advantage of copper smelting lies in that it can smelt simple-shaped goods, the cost of lasts is low, and the production profit is low, but the disadvantage is that there are many defects in smelting, and the compressive strength of the material is poor; the same, copper forging valve Due to the high price of lasts, simple forging facilities, and high production profits, it can produce high-strength goods, and the pressure resistance is much higher than that of smelted parts, and at the same time, it effectively prevents smelting defects. Therefore, for valve bodies that are not too simple in shape, amateur manufacturers use hot forging to produce valve bodies. However, there are also some consumers who adopt the form of smelting for consumption, which requires careful distinction by users. 

 

I think the fire control valve used in the hot gas belongs to the easy valve body, and it is very suitable to use hot forging. When choosing the valve body, you should pay attention to the details. In order to make the design of many valve bodies easier, the valve body inlet and outlet of the straight-through valve are on the same axis. Although it is easy to design, the displacement time of the valve core will be limited.

 

 To the response, because the displacement of the valve core of this type of valve body is normally only 2-3mm.​​

The increase of the spool displacement is very beneficial for dirty ABS Check Valve  HVAC soils, and if the spool displacement is too small, it will easily cause blockage in the case of dirty HVAC water and heavy scaling. Fire control valve head: The temperature sensor in the fire control valve head is usually filled with two kinds of media: solid and liquid. Solid and liquid are different due to the production process. Normal consumers are generally restricted by the scope of production, and often only Using one of the processes to produce solid or liquid valve heads, as long as some heavy-duty manufacturers will produce both valve heads at the same time, it is convenient for depositors to choose. 

 

As for the difference between the two valve heads, I think there is not much difference in the field of HVAC application. If we must say that there is no difference, I think it is in the following range. Marine globe check valve