The SIRA BHsT high-pressure turbine bypass valve from IMI efficiently diverts steam from the main boiler to the cold reheater line, ensuring safe pressure and temperature reductions. Designed for start-up, shut-down, and load changes, it prevents turbine damage and improves plant efficiency. With pinpoint positioning accuracy, a modular design, and advanced steam atomisation for optimal vaporisation, the valve delivers precise control. Its angle-type body and hard-faced seat ensure durability under extreme conditions, handling up to 320 bar and 650°C. The SIRA BHsT valve meets stringent safety standards, making it an ideal solution for modern power plant operations.

Key features

Angle-type body with vertical actuator

Multi-stage pressure reduction for low noise levels

Hydraulic actuator with helical spring

Steam atomising injection nozzle

Parabolic plug for precise control

Handles temperatures up to 650°C

Handles pressures up to 320 bar

Hard-faced integrated valve seat

Meets DIN EN ISO 4126 and ANSI leakage class V

Optional SIL III certification for enhanced safety