Excellent Valves for Isolation & Control


CV1900 Labyrinth Trim Control Valve

CV1900 Labyrinth Trim Control Valve

Valve Type:                                                 Labyrinth trim control valve for velocity control & anti-cavitation


Labyrinth Tortuous Path Grades:          Max 60 or special design


Valve Nominal Size:                                  DN15 through DN250; 0.5 inch through 10 inch


Pressure Rating:                                         PN16, 40, 100, 160, 250, 400; ANSI Class 150, 300, 600, 900, 1500, 2500


Body Style:                                                  Full guided globe or angle


Valve Seat:                                                  Metal or soft seat


Bonnet Type:                                              Bolted; Pressure seal


Guiding:                                                       Labyrinth trim and balance seal ring


Trim Type:                                                   Balanced or unbalanced plug; Pressed plug type, labyrinth seat retainer


Flow Direction:                                           Flow over the plug; Flow under the plug


Flow Characteristic:                                   Linear (standard); Equal percentage EQ%; Quick open or special designed


Rangeability:                                               Minimum 30:1; Maximum 300:1


Temperature Range:                                 From -155°C to 590 °C 


Seat Leakage:                                              Pressure unbalanced metal seat ANSI V, soft seat ANSI VI;

                                          Pressure balanced metal seat ANSI IV or V; Pressed plug metal seat ANSI V


Actuator:                                                     Pneumatic cylinder actuator; Pneumatic diaphragm actuator;

                                                                        Electric actuator; Hand-wheel manual for option

Description & Features

CV1900 Control Valve Labyrinth Trim Cage Type I

CV1900 Control Valve Labyrinth Trim Type II

CV1900 labyrinth disc stacked trim control valve is suitable for compressible and incompressible fluids, and has wide application in high temperature and high pressure severe service, labyrinth trim breaks the large pressure drop across the valve trim into a series of smaller pressure drops by forcing the fluid through a tortuous path of right angle turns, limit velocity below 30 m/s, deliver reliable control, long life and freedom from cavitation, erosion, vibration and noise problems, eliminating the need and expense for supplementary devices, such as diffusers and silencers, the trim design is based on velocity control principles.



Balanced and unbalanced is optional.


Frictional losses in small passages.


Eliminates cavitation, noise and high velocity damaging.


Optimized for a given application.


Disk stacks can be characterized.


Tight shut-off is standard, leakage class ANSI B16.104 VI is optional.


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