一、 D71f46 manual wafer type fluorine lined butterfly valve main overview:

1. There are two basic types, d71f4 and d71f46 (center line) fully lined wafer type butterfly valves, which adopt the combination of two halves of the valve body. The valve seat and the valve body lining are integrated. When the valve works, only the full plastic valve seat and the plastic lined butterfly plate are in contact with the medium. The product can withstand any medium corrosion except molten alkali metal and elemental fluorine. Among them, d71f46 valve stem and the butterfly plate (forged) are integrated, and the surface is evenly coated with a layer of FEP. The inner surface of the manual fluorine lined butterfly valve body channel is smooth, the fluid resistance is small, the CV value is high, the flow capacity is strong, and the torque is moderate. It adopts a four-stage sealing structure and is equipped with a temperature resistant and aging resistant Si rubber elastic gasket valve seat outside the sealing surface, completely achieving zero leakage of media.

2. The valve body of d41f4 and d41f46 flange connected butterfly valves expanded from the above models is fully lined, and the butterfly plate is a semi Lined Butterfly Valve made of stainless steel.

二、 D71f46 manual wafer type fluorine lined butterfly valve product features:

1. The center line butterfly valve is concentric (center line) between the whole butterfly plate and the valve seat within 360 ° circumference, with two-way sealing function, and the pressure and flow can be freely adjusted;

2. The special transition curve at the circumferential connection of shaft head and butterfly plate and the reasonable interference of valve seat;

3. The radial direction of the shaft adopts the combination of O-ring and metal pad;

4. The valve seat is embedded in the groove of the valve body with elastic strips;

5. The end face of the shaft head adopts the combination of elastic O-ring, rigid washer and elastic rubber pad at the shaft shoulder;

6. Adjustable elastic marble positioning is adopted. Accurate positioning and simple structure.

7. Four stage loading elastic seal absolutely ensures zero leakage inside and outside the valve;