The IMI CCI VLN Turbine Bypass Valve is engineered for hot reheat and low-pressure bypass applications in combined cycle and conventional power plants. It delivers precise pressure and temperature control during start-up, shutdown, and trip events, protecting critical components from thermal stress and vibration. With optional DRAG® technology, spring-loaded desuperheaters, and fully modular construction, the VLN provides exceptional reliability, noise attenuation, and flexibility. Its compact design, tight shut-off, and integrated outlet desuperheating system minimise installation space and commissioning time. Designed for the most demanding steam conditions, the VLN ensures efficient, quiet, and safe steam bypass to condenser or vent.

Key features

For hot reheat and LP bypass

Integrated desuperheater with radial injection

Optional DRAG® multi-stage trim

Flow-to-close or flow-to-open

Compact, thermally compensated body

Tight shut-off to MSS-SP61

Temp range: up to 620°C

Trim sizes: 230–450 mm (Kv up to 5200)

Pressure class: ASME 900

Quick-change, non-welded trim