Detailed information of HXF-88 breathing valve:

The breathing valve is divided into HXF-88A type, which is the standard type, and HXF-88B type, which is the antifreeze type.  
The breathing valve basin of the breathing valve is made of hard aluminum alloy, and its shell is made of three materials: cast iron, cast aluminum, and stainless steel.  
The breathing valve has the characteristics of high ventilation capacity and corrosion resistance. The HXF-88B model is suitable for use in high-altitude regions.  

Detailed information of HXF-88 breathing valve: divided into Type I, Type II, and Type III according to working pressure