Cage guided single seat control valve

Body: WCB, SS316,SS316L
Ends: Flange, SW
Seat: SS316+STL
Size: 1/2″ – 24″ (15mm – 600mm)
End connections:
ASME B16.34 class 150-600
DIN PN16-PN100
Actuator: pneumatic actuator, electric actuator

    Category: Control valve


    The Cage single-seat control valve utilizes a cage guided structure and pressure balanced plug, ideal for applications with high differential pressure. By replacing the upper seat with a balanced seal ring, this valve offers improved shut-off capabilities. With a low-opening/closing force due to the pressure balanced structure, it efficiently controls media under high differential pressure conditions with minimal actuator thrust. This valve is commonly used in fluid control for pipelines of moderate temperatures and pressures, ensuring good dynamic stability. Featuring excellent sealing performance, high allowable differential pressure, cage guiding, and a compact design, it allows for quick trim replacement with high maintenance efficiency. The balanced plug structure ensures minimal actuator thrust requirements.

    Cage single-seat control valve

    Valve material

    • Valve body material: WCB,WCC,WC6, CF8, CF8M, CF3M+ ptfe or pfa
    • Valve cover material: WCB, CF8, CF8M, CF3M
    • Valve trim: SS316+ptfe or pfa
    • Packing: PTFE, graphite
    • Nominal diameter: 1/2“-10“ DN15-DN250
    • Nominal pressure: ANSI150, PN1.6
    • Body type: straight-through, angle

    Bonnet type:

    • standard,
    • heat dissipation,
    • bellows,
    • jacket insulation


    • flange FF, RF, RJ, TG,
    • MFM
    • Welding
    • SW

    Flow characteristics:

    • linear
    • Equal percentage

    Leakage level: 

    • hard seal (ASME B16.104 IV)
    • Soft seal (ASME B16.104 VI)

    Operating temperature:

    • Standard type -17~+230℃
    • Elongation type I (EI) -45~-17℃, +230~+566℃
    • Elongation type II (EII) -100~-45℃
    • Elongation type III (EIII) -196~-100℃


    • Pneumatic actuator: diaphragm type
    • Action mode: direct action, reverse action
    • Fault position: normally open, normally closed
    • Accessories: solenoid valve, electric positioner, limit switch, handwheel, position-keeping valve, air source filter
    • Electric actuator: intelligent regulating type and intelligent switching type
    • control signal:4-20mA


    What is cage guided control valve?

    A cage-guided control valve is a sophisticated type of control valve designed to manage the flow of fluids with high precision and stability. This valve features an internal cylindrical cage that surrounds the plug, providing robust guidance and support during operation. The cage contains multiple flow passages or slots, which help regulate fluid flow as the plug moves within the valve body.

    Cage single-seat control valve

    What are the applications of cage guided control valve?

    Cage-guided control valves are integral to numerous critical applications across various industries, thanks to their precise control capabilities and robust design. In the oil and gas industry, these valves are essential for managing the flow of hydrocarbons in both upstream and downstream processes. They effectively handle high-pressure drops and severe service conditions, ensuring operational stability and reliability.

    In chemical processing plants, cage-guided control valves are pivotal for regulating the flow of aggressive and corrosive chemicals. Their advanced design mitigates turbulence and vibration, crucial for maintaining process integrity and safety. These valves are also vital in power generation facilities, where they control steam and water flow with high precision, contributing to efficient and safe plant operations.