Product Name: API 609 Butterfly Valves
Standard: API 609
Size: DN100, 100 mm, 4 Inch
Pressure Rating: PN16, Class 150 LB
Body Material: Ductile Iron (DI)
Disc Material: SS 316
Seat Material: EPDM
End Connection: Wafer
Operation: Lever Operated with Limit Switch
Source: https://www.landee.cn/api-609-butterfly-valves-ductile-iron-4-inch-cl150-wafer.html