Skip to main content

Turbo Expander Hydrobrake (TH) Series

TH-3000, TH-4000, TH-6000


  • Industrial gas production
  • Air separation
  • Liquefaction

Feedostock - Fluids Handled

  • Air
  • Nitrogen
  • Waste gas (high oxygen content)
  • Carbon dioxide & carbon monoxide
Expander Ns Range 40 – 140
Expander Efficiency up to 88%
Expander Pressure Ratio up to 24:1
Tip Speed up to 1,200 ft/sec (366 m/s)
Rotor Speed up to 55,000 RPM
Refrigeration Production up to 200 HP (150 kW)

Available Options

  • Inlet screens
  • Inlet trip valves
  • Surge control system
  • Low hysteresis high cycle inlet guide vanes
  • Cable trays or conduit
  • Safe area or hazardous area location
  • International code compliance (HPGSL, PED, GOST, etc.)
  • Cryogenic performance testing
  • Spare cartridge with nozzle assembly


“Zero Leakage” Inlet Guide Vanes

  • Adjustable inlet guide vanes provide optimum flow patterns as well as precise and continuous control across the machine’s full operational spectrum
  • Self-energizing back plate maintains zero sidewall clearance for maximum expander efficiency
  • Zero backlash variable guide vane configuration provides smooth turn-up capability to 125% of design flow

Rugged Rotor Design

  • Stiff rotor shaft and high capacity tilt pad bearings assure maximum stability at all operating loads and speeds
  • Sealing design offers robust construction and reliable performance
  • Uniformly loaded drive tangs provide the high torque capacity necessary to handle upset conditions

Self-Aligning Wheel Attachment

  • Tapered bore and stretch rod design automatically compensates for thermal and mechanical changes to maintain alignment under all operating conditions
  • Precision machined tapered bore/shaft attachment allows independent balancing of turbine wheel and shaft to facilitate field repair

Main features

  • Compact footprint
  • “Zero leakage” inlet guide vanes
  • Rugged rotor design
  • Tapered shaft wheel attachment for field interchangeability
  • Components individually balanced for ease of field replacement
  • Externally adjustable power absorption control
  • Labyrinth shaft seals with oil-free design
  • Manual or automatic oil brake flow control valve for adjustment

Process diagram