What is a butterfly valve flange?
Butterfly valve flange is a small and light industrial part. Its butterfly plate is installed in a fixed diameter pipeline. When we use it, the disc butterfly valve will rotate 90 degrees around the central axis. Once rotated to 90 degrees, the valve will be open. At present, there are two common sealing methods for butterfly valve flanges: elastic sealing and metal sealing. Flange valve with elastic seal can be embedded in the valve body or around the butterfly plate.
Relevant standards of butterfly valve flange
Does the design and manufacture of butterfly valve flange conform to GB/T 12238-89? Universal valve? Flange and clamp butterfly valve JB/T8527- 1997 Metal seal butterfly valve? JIS two international standards. According to JB/T82. 1-94 (original standard JB82-59), the size of butterfly valve flange meets the requirements of PN= 1.0MPa. The structural length of the butterfly valve flange conforms to GB 1222 1-89 "Flanged Metal Valves? Structural length ". The inspection and test of butterfly valve flange are based on GB/T 13927-92 "General Valve? The provisions of the pressure test ".
Complete price list of butterfly valve flange
Butterfly valve flange presents different prices according to different uses. Generally speaking, the price of domestic brands such as Haisheng Butterfly Valve is around 96 yuan/month, while the price of turbine flange butterfly valve is slightly more expensive. The price of butterfly valve flange with model D341x-1016 is around 120 yuan. Galvanized ventilation butterfly valve flange is cheaper, and can be used as a fire check valve, and the price is about 70 yuan/piece. For gas and liquid, they need to use stainless steel flange solenoid valves, and the price of this kind of butterfly valve flange is around 390 yuan. In addition, the turbine hard seal cast steel butterfly valve produced by Shanghai Lianggong is also expensive, and the market price is 530 yuan/piece.