Flange-type ductile cast iron butterfly valve | KYOSEI, suppliers of gas and water piping materials, including pipes, valves, and governors

Medium pressure B, flange type

Flange-type ductile cast iron butterfly valve

Flange-type ductile cast iron-made butterfly valve


Dual eccentric structure ensures reliable sealing performance.

Special rubber provides excellent dust resistance.

Custom-made thermal conversion type can be produced to order.

Dual eccentric structure


Model KBTF-253D
[Lever operation]
Nominal dia. 150A・200A
Port form Reduced bore (Open area ratio 70%)
Material Body [FCD], disc [Self-lubricating rubber+FCD], seat [SUS], and stem [SUS]
Operating pressure Less than 0.3 MPa
Outer surface coating Aluminum paint