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ZDT8 type pneumatic diaphragm single seat regulating valve

ZDT8 type pneumatic diaphragm single-seat regulating valve, single-seat plunger-shaped spool, spool with top-bottom guide. It is used for occasions with strict requirements on leakage, low pressure difference before and after the valve, certain viscosity and fibrous medium. For high pressure difference and large diameter valve, it should be used in conjunction with positioner

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    • Название товара: ZDT8 type pneumatic diaphragm single seat regulating valve
    • Номер товара: 1084834298428280832

    ZDT8 type pneumatic diaphragm single-seat regulating valve, single-seat plunger-shaped spool, spool with top-bottom guide. It is used for occasions with strict requirements on leakage, low pressure difference before and after the valve, certain viscosity and fibrous medium. For high pressure difference and large diameter valve, it should be used in conjunction with positioner

    Introduction to 1.

    ZDT8 type pneumatic diaphragm single-seat regulating valve, single-seat plunger-shaped spool, spool with top-bottom guide. It is used for occasions with strict requirements on leakage, low pressure difference before and after the valve, certain viscosity and fibrous medium. For high pressure difference and large diameter valve, it should be used in conjunction with positioner

     

    2. technical parameters and performance indicators

    Main technical parameters of adjusting mechanism

    Nominal diameter mm

    G3/4"

    20

    25

    32

    40

    50

    65

    80

    100

    125

    150

    200

    Rated flow coefficient Kv

    0.08

    0.12

    0.20

    0.32

    0.50

    0.80

    1.20

    2.00

    3.20

    5.00

    8

    12

    20

    32

    50

    80

    120

    200

    280

    450

    Nominal pressure MPa

    1.6, 4.0, 6.4 (normal temperature type);4.0, 6.4 (medium temperature type);0.6, 4.0, 6.4 (low temperature type)

    Stroke mm

    10;16

    16

    25

    40

    60

    Medium temperature ℃

    -20~200 (normal temperature type);-40~450 (medium temperature type);-250 ~-60 (high temperature type)

    flow characteristics

    Straight Line

    straight line; equal percentage

    Flange size and type

    pipe thread connection

    Cast iron flange as per GB/T17241.6-1998;
    Cast steel flange according to JB/T79.2-94 and JB/T79.3-1994 (low temperature type)

    Valve body material

    Normal temperature type

    ZG230-450;ZG1Cr18Ni9Ti

    HT200;ZG230-450;ZG1Cr18Ni9Ti

    medium temperature type

    ZG230-450;ZG1Cr18Ni9Ti

    Low temperature type

    ZG1Cr18Ni9Ti

    Spool material

    1Cr18Ni9Ti

    Upper bonnet type

    Ordinary type (normal temperature type); Hot plate type (medium temperature type); Long neck type (low temperature type)

    adjustable ratio

    30:1

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