The NB Type Globe Valve from IMI delivers precise control for main and bypass feed-water systems in nuclear applications. Operated by an electro-motor or manually, this valve offers exceptional stability and high tightness classes for reliable performance. Forged or cast from carbon or stainless steel, it is designed to handle water and two-phase flows under demanding conditions. With sizes up to 450 mm and a class rating of 1500, the NB valve features IMI’s proprietary mechanical overload protection and IEEE-qualified components for enhanced durability and safety. Its advanced disc-stack technology ensures superior controllability across a wide range of operations.

Key features

Designed for nuclear applications

Electro-motor or manually operated control

Class rating up to 1500

Size up to 17.7” (450 mm)

Forged or cast carbon or stainless steel construction

Handles water and two-phase flows

High tightness classes for leakage prevention

Advanced disc-stack technology for controllability

Proprietary mechanical overload protection

Qualified under IEEE standards