China DN100 4inch Hard Back Seat Wafer body Butterfly Valve Exporter, Exporters

The wafer-type valve body can be installed between PN6, PN10, PN16, ANSI 150 or JIS 5K/10K flanges, suitable for various pipeline standards. Its small size and light weight simplify installation in space-constrained systems.

Compared with soft-back valve seats, hard-back valve seats are less prone to deformation. However, hard-back valve seats are not as replaceable as soft-back valve seats.

The valve body is made of ductile iron to ensure corrosion resistance and is suitable for various media such as water, air or weak chemicals.

CF8M disc offers excellent resistance to chemicals, water, steam, oils, and mildly corrosive media, making it suitable for harsh industrial environments.

The SplitShaft structure consists of two independent short shafts: the upper shaft connects to the actuator, and the lower shaft connects to the end cap and serves only a positioning function. The two shafts are inserted and fixed from both sides of the valve disc.

The Double HalfShaft design reduces the machining difficulty of a single long shaft and results in a lighter weight.

Approvals and Standards: Meets standards such as EN 593 (design), ISO 5752 (face-to-face distance), and API/ANSI/DIN/JIS flange compatibility.