Introduction of Fluorine lined Check Valve Manufacturer: Three layer Two type Valve Core Structure

check valve Manufacturer's introduction of three-layer two-piece valve core structure

The three-layer two-piece valve core structure is shown in Figure 2. The valve core is immersed in three high (high temperature, high pressure, high speed) airflow, and the working environment is extremely harsh. The key to the service life of the valve lies in the service life of the valve core. PTFE lined valve The valve core is designed as an upper and lower body to wrap the spherical valve stem head inside during assembly. The outer layer of the valve core is a nickel based hard alloy protective plate, and the second layer is an aluminum silicate fiber insulation layer. The main material of the valve core is high-temperature alloy GH3128, which can work continuously for 100 hours at 900 ℃. Fluorine lined DC globe valve The upper and lower spherical sealing surfaces of the valve core and the internal spherical sealing surface are both welded with cobalt based hard alloy Co119, which maintains a hardness of 32-35HRC at 750 ℃. There are concave spherical surfaces on the upper and lower parts of the valve core, which respectively contact the two convex spherical surfaces at the head of the valve stem to improve its floatability. Through more than five years of practice, it has been proven that this structure is reliable for clamping Fluorine-lined Butterfly Valve .

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