Technical specification:
Design: Centerline design, single stem with pin, backed-seat butterfly valve
End connection: wafer end
Medium: Water,
Temperature range: -20? to 120?.
Design standard: API 609
Side flange: ANSI 125, ANSI 150, DIN PN10, PN16 or customer need
Top flange standard: ISO 5211
Test standard: API 598
Operation: Handle, gearbox, electric actuator, pneumatic actuator or hydraulic actuator

Application:
Petroleum industry, Shipbuilding industry, Urban water supply and drainage pipeline, etc.

Material
Body: Ductile cast iron, cast iron,
Disc: SS 304, SS316, Ductile cast iron, Aluminum-bronze
Stem: SS316, SS410, SS416, SS304, SS 17-4PH
Seat: NBR, EPDM, VITON, high temperature EPDM, Food grade EPDM

Surface:
Epoxy resin coating both inside and outside the body

Advantages:
1.With centerline design, simple structure and easily operation
2. Back-seat design is more easily to assembly and disassembly