Steel lined F46 butterfly valve D371F46

The steel-lined F46 butterfly valve D371F46 adopts a halved two-piece valve body combination. The valve seat and the valve body lining are integrated. When the valve is working, only the all-plastic valve seat and the plastic-lined butterfly plate are in contact with the medium. The valve can withstand the introduction of the lining material The medium is corroded. The four-pole sealing structure is used and the sealing surface is equipped with an elastic gasket of temperature-resistant and anti-aging SI rubber to completely achieve zero leakage of the medium.

　　 One, structural characteristics

　　 1. The centerline butterfly valve is that the entire butterfly plate and the valve seat are concentric (centerline) in a 360° circle, with a two-way sealing function, and the pressure and flow can be adjusted freely;

　　 2. The eccentric butterfly valve is a two-dimensional direction eccentric product. The cam effect of the sealing pair will produce sufficient sealing specific pressure, and with the increase of working pressure, the sealing effect will be more ideal;

　　 3. The four-stage loaded elastic seal ensures zero leakage inside and outside the valve.

　　 a: The shaft and the butterfly valve are lined with F46; b: The end face of the shaft head adopts an elastic O-ring, a rigid washer at the shoulder, and an elastic rubber pad combination;

　　 c: The radial direction of the shaft adopts the combination of O-ring and metal sleeve;

　　 d: The valve seat is embedded in the valve body groove with elastic strips.

　　 4. Using flexible gaskets for accurate positioning and simple structure. (*The O-ring is used to prevent accidental leakage as a safety measure).

　　 2. Design specifications

　　 Follow GB/T12238, API 609, MSS SP-67 standards