High pressure labyrinth control valve

Size: DN10-600(3/8”-24”)
Bonnet: standard ,heat dissipation ,cryogenic ,bellows
Characteristic: equal percentage ,linear quick open
Pipe connection: flange,butt welding type
Actuator: pneumatic diaphragm actuator,pneumatic piston actuator,electric actuator



Balanced labyrinth control valve adopts the labyrinth cage and balanced plug design. The labyrinth cage is composed of cylindrical discs with many coaxially distributed labyrinths. According to different technological parameters of the media, different labyrinth specifications and piling layers are designed to form the cage and the cage divides the whole flow channel into several tiny circuitous or step flow channels, forcing the fluids to continuously change the flow direction and flowing area and gradually reducing the pressure of fluids, so as to prevent the occurrence of flash evaporation and cavitation and prolong the service life of the trim. The balanced cage plug is adopted. The closely fit plug and seat ensure very low leakage. The trim is suitable for service conditions under which blocked flow will easily be produced and cavitation will be caused.

Parameters of control valves

Trim features: cage guided
balanced trim structure
labyrinth cage structure
balanced seal ring structure(normal temperature)
metal seal ring structure (high temperature)
Body type: straight-through type
angle type
Z type body
Bonnet type: standard type
heat dissipation type
cryogenic type
Flow characteristic: equal percentage
quick open
Size: DN25-400(1”-16”)
Pressure class:  PN15、25、42Mpa(ANSI 900、1500、2500LB)
Leakage class: ASME B16.104 Ⅴ(standard type metal seat)
Pipe connection type: flange type
butt welding type
Applicable temperature range: -30CC° ~ 260CC°(balanced seal ring structure)
-196CC° ~ 550CC°(metal seal ring structure)
Actuator type: pneumatic diaphragm actuator
pneumatic piston actuator
electric actuator