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  • Pneumatic

  • Pneumatic three-way regulating valve

    Product model: ZMAX/ZMAQ
    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
    Three-way structure: three-way diversion and three-way confluence
    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 membrane three-way regulating valve is mainly used to divide an inlet fluid into two outlet fluids or to synthesize two inlet fluids into one outlet fluids. Three-way valves are divided into confluence control valves and shunt control valves. Valve size, when the pressure difference is small, the confluence valve can also be used as a diversion valve, but the valve size is large. Do not use shunt valve when pressure difference is high.


    Product type

    Shunt three-way regulating valve

    Confluent three-way regulating valve


    Product valve body

    Type: Three-way Casting Structure

    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 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 type: single-seat plunger type

    Core seat: 304, 316 + STL

    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

    The air-closed FO (positive action actuator) opens vertically when the gas source fails.

    Air-Open FC (Pairing Reaction Actuator) When the gas source fails, the horizontal direction is open.

    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: 30:1

    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)