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IMI CCI
HBSE-VLB & NBSE-VLB High & Low Pressure Turbine Bypass Valve
Efficient steam conditioning for turbine bypass systems.
Enables controlled turbine bypass for high- and low-pressure applications.
Delivers efficient desuperheating and steam temperature control.
Features multi-stage pressure reduction and noise suppression.
Features
The HBSE-VLB and NBSE-VLB steam conditioning valves from IMI deliver efficient performance for turbine bypass applications in boiler systems. The HBSE handles high-pressure bypass, while the NBSE is designed for low-pressure bypass. These angle-style valves feature multi-stage pressure reduction, spray water atomising nozzles, and high temperature coatings for reliable operation under extreme conditions. With optional extenders for improved steam velocity and rangeability, they ensure optimal steam temperature control and noise reduction. Built to ANSI-4500 standards with various actuator options, these valves support seamless start-up, shutdown, and abnormal condition management in modern power plants.
Key features
Designed for supercritical power plants
Angle-style design
Multi-stage pressure reduction
Atomising nozzles
Chrome carbide or C21 coating
Optional atomisation extender
ANSI rating up to 4500
Pneumatic, hydraulic, electromechanical actuation
PED, ASME, ISO compliant
Specifications
Fluid Types
Steam
Trim Category
Multi-Stage
Material
A105
A182-F1
A182-F11
A182-F22
A182-F91
A182-F92
P250GH
16Mo3
13CrMo4-5
11CrMo9-10
X10CrMoVNb9-1
X10CrWMoVNb9-2
Actuator Type
Pneumatic
Hydraulic
Electric
Manual
Spray Injection Category
Variable Area Nozzle
Steam Assist
Design Codes
ASME (Section VIII)
ASME (B16.34)
EN
Service Category
Severe
Max. ASME Rating
4500
Certification
SIL
PED
IBR
CRN
FaMA
MoM
Gost
Temperature Limits (°C)
300 to 610
