Cage single-seat Control Valve(analogous to "Fisher") adopts the cage guided structure and pressure balanced plug. It is suitable for applications with relatively high differential pressure. The balanced seal ring replaces the upper seat to change the traditional cage double-seat structure into the cage single-seat structure. This improvement has greatly enhanced the shut-off class of the cage valve. The plug makes use of the pressure balanced structure, the opening and closing force is low and the media under service conditions with high differential pressure can be controlled through relatively low actuator thrust. It is widely used for fluid control on pipelines of middle and low temperatures and middle and low pressures that require good dynamic stability. With such features as good sealing performance, high allowable differential pressure, cage guiding, large guiding area, good stability and compact structure.


Specifications
Size:DN40-400（1.5”-16”）
Pressure Rating:PN1.6、4.0、6.3Mpa（ANSI 150、300、600LB）
Structure type:single seat,double seat,sleeve type
Medium:Water,Steam,Oil, Acid, etc
Main materilas:WCB,CF8,CF8M,CF3,CF3M etc
Flow Characteristics:Linear, Equal-percentage, Quick-open
Applications:Control flow, pressure, temperature, etc


Technical parameter
Design Standard:ANSI,DIN,JIS
End Connectionn:ANSI/ASME B16.5,HG/T20592,JIS22220
Face to Face:Manufacturer
Leakage Standard:ANSI/ASME B16.104,JB/T7387
Pressure-Temperature Rating:ANSI/ASME B16.34-2009,GB/T12224-2005   

Parameters of control valves