Bellow seal valves are normally installed in a working condition that has strict emission requirement and once emission happens it will incur harmful influence to person and environment.This type of valve is achieved by mounting a metal bellow between the bonnet and the stem. Bellow will be driven to scale up and down when stem moves, which will eliminate possible leakage arising from stem movement.
Size: NPS 2"~30"(DN50~DN1650）
Pressure Rating: ASME CLASS 150~1500（PN16~PN260）
Body material：Carbon steel, Stainless steel, Alloy steel, Duplex stainless steel
End connection：RF, BW, RTJ
Operation：Manual, Pneumatic, Electric, Hydraulic
