structural characteristics

The midline butterfly valve structure has a concentric butterfly plate and valve seat within a 360 ° circumference, with bidirectional sealing function, and can freely adjust pressure and flow rate.

Fully lined with fluorine technology, the surfaces of the valve body, butterfly plate, and valve stem are all covered with F4 fluoroplastic layer, which only comes into contact with the medium and has excellent corrosion resistance.

Four level loading elastic sealing structure ensures zero leakage inside and outside the valve.

Stainless steel cast valve body, with strong weather resistance and excellent hygiene on the outer layer, and fluorine lined corrosion resistance on the inner layer, suitable for medium and low pressure strong corrosion and hygiene grade working conditions.

Pneumatic actuator drive, can be matched with valve positioner to achieve precise flow regulation, suitable for automation control needs.

Design specifications: comply with GB/T 12224 and HG/T 3704 standards.

Drive mode: Pneumatic (expandable to manual, electric, worm gear transmission).

a. D641F4 fully lined type: valve body fully lined/butterfly plate fully lined

b. D641F46 fully lined type: valve body fully lined/butterfly plate fully lined layer

c. D641F46 semi lined type: valve body fully lined/butterfly plate made of corrosion-resistant stainless steel (unlined)

execution standard

Design and Manufacturing: GB/T 12224, HG/T 3704

Structural length: GB/T 12221

Flange size: HG/T 20592/ASME B16.5

Pressure test: GB/T 13927

Logo: GB/T 12220

Supply: JB/T 7928