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  • Pneumatic
  • Pneumatic Film Sleeve Regulating Valve

    Product model: CV3000
    Valve body material: WCB, 304, 316, 316L
    Material of spool: 304, 316 + STL PTFE
    Seat Material: 304, 316 + STL; PTFE
    Connection mode: flange, thread, welding
    Seat type: single seat, double seat, sleeve
    Cover Type: Standard Type, Low Temperature Type, Heat Dissipation Type, Bellows Sealing Type
    Pneumatic actuator: multi-spring thin film actuator with air-opening and air-closing
    Accessories: Electrical positioner, air filter pressure relief valve, handwheel, reserve valve

    Product overview

    Pneumatic film sleeve control valve adopts sleeve-oriented, pressure-balanced double sealing surface and single sealing surface structure. It is a force-balanced control valve with compact body structure and S-streamlined fluid passage. It has the advantages of small pressure drop, large flow, wide adjustable range and high accuracy of flow characteristics. The control valve is equipped with multi-spring film actuator, which has small structure and large output force. It is more suitable for use under fluid control conditions requiring good dynamic stability, low noise, cavitation/flash, high and low temperature and high pressure difference.


    Standard technical parameters

    Valve body type: single seat, double seat, sleeve pneumatic film sleeve control valve

    Nominal Path: DN20-DN200

    Nominal Pressure: ANSI150, 300, 600LB JIS10, 16, 20, 30, 40K PN1.6, 2.5, 4.0, 6.4MPa

    Connection mode: flange: FF, RF, RJ and LG

    Flange standard: ANSI B16.5, JIS B2201 JB/T79.1 PN1.6MPa, JB/T79.2

    Thread: DIN, NPT, RC, BSP, G, etc.

    Welding: GB12224-89

    Sealing surface form: PN16 convex surface, PN40, PN63, PN100 concave surface

    Material: WCB, 304, 316, 316L

    Upper cover: Standard type (-20 ~200 ~C) low temperature type (-60 ~196 ~C) heat dissipation type (-40 ~450 ~C)


    Bellows sealing type

    Cover Form: Plate Form

    Filler: V-type fluorotetrafluoroethylene, flexible graphite


    Valve components

    Core Form: Pressure Balance Form

    Core seat: two-seat plunger type spool, metal seal, equal percentage characteristic, linear characteristic (LC)

    Flow Characteristics: Equal Percentage, Linearity, Quick Opening


    Executing agency

    Form: Multi-spring membrane actuator

    Form of action: positive and negative

    Diaphragm Material: Polyester Fabric Reinforced by NBR Clip

    Spring range: 20-100KPa, 40-200KPa, 80-240KPa.

    Supply pressure: 0.14, 0.16, 0.28, 0.40 MPa


    Function form

    Air-closed FO (Positive Acting Actuator) When the air source fails, the actuator spring opens the valve.

    Air-Open FC (Reaction Actuator) When the air source fails, the actuator spring closes the valve.

    Annex (Configuration as required)

    Electrical positioner, air filter pressure relief valve, handwheel mechanism, limit switch, solenoid valve, reserve valve and others


    Product performance

    Rated KV: Reference Table

    Flow characteristics: linear, equal percentage, fast opening

    Adjustable range: 50:1

    Leakage Class: Metal Seal: Less than 0.01 (ANSI B16.104-1976IV)

    Soft seal: less than 0.00001%

    Backlash: Less than 1% of total travel (with locator)

    Less than 3%-5% of the total trip (without locator)

    Basic error: less than (+1%) of the whole journey (with locator)

    Less than +5% of the total stroke (without locator)