The national standard flanged ball valve is a valve that is especially suitable for opening and closing. Its opening and closing operations can be completed by rotating 90 degrees and small torque. Of course, the national standard flanged ball valve is also suitable for throttling and flow control, it can be used to control the flow of various types of fluids, such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media , This is also because the valve body cavity of the national standard flanged ball valve is equal, which can provide a direct, low-resistance flow path for the medium.

     The material of the national standard flanged ball valve is generally stainless steel, which is divided into 304, 316, 321, etc. The size reference standard is introduced as follows:

1/2′ DN        15 Four points (4 credits)     3/4′ DN20 six cents (6 cents)

1′ DN25       1?′ DN32         1?′ DN40

2′ DN50        2?′ DN65        3′ DN80

4′ DN100      5′ DN125         6′ DN150

8′ DN200      10′ DN250        12′ DN300