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Dynamic balancing constant flow valve

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  • Dynamic balancing constant flow valve
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    Dynamic balancing constant flow valve

    Product model: ERV
    Nominal diameter: DN50~500mm
    Nominal pressure: PN1.6MPa
    Applicable temperature: 0 ℃~95 ℃

    Applicable media: air conditioning cold and hot water, ethylene glycol solution


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    Product Overview

    The dynamic flow balance valve automatically changes the Drag coefficient according to the change of system working conditions, and can effectively control the flow passing through to maintain a constant value within a certain pressure difference range. When the pressure difference before and after the valve increases, the automatic closing action of the dynamic flow balance valve can maintain the flow rate unchanged. On the contrary, when the pressure difference decreases, the valve automatically opens and the flow rate remains constant. When the pressure difference is less than or greater than the normal working range of the valve, it cannot provide additional pressure head after all. At this time, the dynamic flow balance valve reaches the fully open or fully closed position, and the flow rate is still lower or higher than the set flow rate, which cannot be controlled. The dynamic flow balance valve enables the valve liner to change according to the pressure difference of the water system from time to time, without exceeding the originally set water flow rate and absorbing excessive pressure difference, thus achieving automatic balance of the entire water system with the same pressure and flow rate. In the application of dynamic flow balancing valves, as the system pipeline pressure fluctuates, the valves inside the balancing valve automatically move up and down to change the opening, thereby maintaining the flow rate of the pipeline unchanged.


    Main features
    1. The Dynamic equilibrium valve does not need external energy for automatic flow regulation.
    2. Automatically adjust the flow rate of equipment or pipelines to meet the required design flow rate.
    3. Compact design saves installation space
    4. Simplified the calculation workload of the pipeline system during design
    5. Convenient and fast installation work
    6. The Dynamic equilibrium valve system does not need to be balanced before operation

    7. The stainless steel valve liner ensures strong corrosion resistance and long service life of the valve.


    Operational principle
    1. The dynamic flow balance valve can be called a fixed dynamic flow balance valve, which has two types: flange and clamp. Multiple valve cores are installed in the valve body, and the valve core determines the flow rate. Therefore, the flow rate is usually set before leaving the factory to automatically maintain the system flow rate at the required setting value; When selecting a dynamic flow balance valve, hydraulic calculation should be carried out first to determine the range of flow and pressure difference.
    2. The dynamic flow balance valve is made of cast steel and ductile iron, and can be divided into left and right valve body flanges fixed with bolts and nuts. The middle of the flange is sandwiched with a fixing plate and an O-ring (nitrile rubber (N220SH)), and there are multiple circular holes of the same size on the plate to fix the valve liner. The valve liner is made of stainless steel (304-2B) and copper, with a surface plated with tin nickel alloy; The valve liner has self-cleaning and anti clogging functions.
    3. The dynamic flow balance valve can accurately control the pipeline flow within the working pressure range, enabling the entire system to maintain balance at all times. There is no need to perform tedious resistance calculations on the entire pipeline. No need for manual adjustment, can save a lot of manpower, installation space is not limited, and at the same time, it avoids artificial destructive adjustment. It can prevent equipment loss caused by excessive flow, improve equipment durability and workability. Make the entire water system simple and reliable, without the need to install the same pipeline, saving initial investment, installation, and material costs.

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    Main outer dimensions

    Nominal Diameter
    DN(mm)

    B(mm)

    C(mm)

    D(mm)

    E(mm)

    F(mm)

    G(mm)

    Weight(Kg)

    Nominal Diameter

    DN(mm)

    B(mm)

    C(mm)

    D(mm)

    E(mm)

    F(mm)

    G(mm)

    Weight(Kg)

    50

    99

    125

    165

    38

    239

    218

    16

    300

    389

    430

    485

    38

    466

    565

    187

    65

    188

    145

    185

    38

    239

    218

    19

    350

    448

    490

    555

    38

    479

    700

    249

    80

    132

    160

    200

    38

    239

    218

    22

    400

    503

    550

    620

    38

    504

    790

    356

    100

    156

    190

    235

    38

    365

    270

    38

    450

    548

    640

    670

    38

    517

    800

    418

    125

    184

    220

    270

    38

    365

    295

    46

    500

    609

    660

    730

    38

    520

    880

    518

    150

    211

    250

    300

    38

    410

    354

    66

    600

    720

    770

    845

    38

    554

    1050

    718

    200

    274

    310

    360

    38

    430

    484

    96

    800

    928

    990

    1085

    38

    557

    1260

    865

    250

    330

    370

    425

    38

    456

    488

    128












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    Next:Static balance valve
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    Key words :
    • Large diameter valve series,
    • Ball valve series,
    • Butterfly valve series,
    • Gate valve series,
    • Globe valve series,
    • Check valve series,
    • Forged steel valve series,
    • Pneumatic valve series,
    • Electric valve series,
    • Control valve series,
    • Discharging valve series,
    • Pressure reducing valve series,
    • Steam trap series,
    • Plunger valve series,
    • Plug valve series,
    • Gas valve series,
    • Fluorine valve series,
    • Rubber-lined valve series,
    • Power station valve series,
    • Metallurgical valve series,
    • Bellows valve series,
    • Ceramic valve series,
    • Oxygen valve series,
    • Ammonia special valve series,
    • Oilfield valve series,
    • Filter series,
    • Breathing valve flame arrester series,
    • Special material valve series,
    • Sanitary valve series,
    • Needle instrument valve series,
    • Water conservancy control valve series,
    • Copper valve series,
    • Solenoid valve series,
    • Other valves,
    • Large diameter valve series,
    • Ball valve series,
    • Butterfly valve series,
    • Gate valve series,
    • Globe valve series,
    • Check valve series,
    • Forged steel valve series,
    • Pneumatic valve series,
    • Electric valve series,
    • Control valve series,
    • Discharging valve series,
    • Pressure reducing valve series,
    • Steam trap series,
    • Plunger valve series,
    • Plug valve series,
    • Gas valve series,
    • Fluorine valve series,
    • Rubber-lined valve series,
    • Power station valve series,
    • Metallurgical valve series,
    • Bellows valve series,
    • Ceramic valve series,
    • Oxygen valve series,
    • Ammonia special valve series,
    • Oilfield valve series,
    • Filter series,
    • Breathing valve flame arrester series,
    • Special material valve series,
    • Sanitary valve series,
    • Needle instrument valve series,
    • Water conservancy control valve series,
    • Copper valve series,
    • Solenoid valve series,
    • Other valves,
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