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Ductile iron GGG40 silent check valve soft seal
silent check valve

Ductile iron GGG40 silent check valve soft seal

Type:Silent type

Series:HC41X-16Q

Size: DN40-DN700/2”-28”

Pressure rating: PN10/PN16/150LB/300LB

Design standard: DIN/API

Service: OEM&ODM

The silent check valve operates smoothly and closes quickly, effectively eliminating pump stop water hammer and pipeline impact noise, achieving silent operation. The ductile iron silent check valve has good sealing performance, low flow resistance, and is maintenance-free, effectively preventing medium backflow.

    Valve Type:

    Silent check valve

    Structure:

    Silent type

    Standard:

    API609

    Workmanship:

    Investment casting

    Sealing direction:

    Single-directional

    Sealing grade:

    Zero leakage

    Temperature:

    -20°C<T<120°C

    Operation:

    Self-starting

    Ductile iron GGG40 silent check valve soft seal

    Characteristics

    This ductile iron silent check valve is a water hammer eliminating non-slam check valve for water supply systems. Made of high-strength QT450 ductile iron with epoxy anti-corrosion coating, it features streamlined axial flow passage and spring quick-close structure for noiseless operation, low pressure loss and reliable backflow prevention. Widely used in building water supply, fire protection, HVAC and municipal water pipeline projects.

    Ductile iron GGG40 silent check valve soft seal-1

    Advantages

    1.The check valve silent type adopts spring-assisted quick-close structure to eliminate water hammer and pipeline noise effectively, ensuring silent and stable operation for high-standard water supply systems.

    2.The silent check with high-strength ductile iron body with full epoxy anti-corrosion coating features excellent pressure resistance and durability for long-term pipeline service.

    3.Streamlined axial flow design reduces flow resistance and energy consumption. Automatic backflow prevention fully protects water pumps and pipeline systems.

    Packing

    Standard export wooden case packaging

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    Application Scenarios

    This silent check valve is widely used in high-rise building water supply pump rooms, municipal water supply pipelines, fire protection systems, HVAC circulating water, hospital and hotel silent water supply projects, industrial water circulation and smart water pipe network systems.

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    Material

    Part name

    Material

    Part name

    Material

    Body

    GJS 500-7

    Gasket

    EPDM

    Disc

    GJS 500-7+EPDM


    Disc nut

    ANSI 304

    Spring

    ANSI 304


    Guide sleeve

    C61900

    OO-ring

    NBR

    Baffle

    GJS 500-7

    Stem

    ANSI 304

     

    Dimension

    dimension

    Nominal diameter

    L

    D

    D1

    N-Φd

    DN(mm)

    NPS(in)

    PN10

    PN16

    PN25

    PN10

    PN16

    PN25

    PN10

    PN16

    PN25

    50

    2"

    150

    165

    165

    165

    125

    125

    125

    4-Φ19

    4-Φ19

    4-Φ19

    65

    2.5"

    170

    185

    185

    185

    145

    145

    145

    4-Φ19

    4-Φ19

    8-Φ19

    80

    3"

    180

    200

    200

    200

    160

    160

    160

    8-Φ19

    8-Φ19

    8-Φ19

    100

    4"

    190

    220

    220

    235

    180

    180

    190

    8-Φ19

    8-Φ19

    8-Φ23

    125

    5"

    200

    250

    250

    270

    210

    210

    220

    8-Φ19

    8-Φ19

    8-Φ28

    150

    6"

    210

    285

    285

    300

    240

    240

    250

    8-Φ23

    8-Φ23

    8-Φ28

    200

    8"

    230

    340

    340

    360

    295

    295

    310

    8-Φ23

    12-Φ23

    12-Φ28

    250

    10"

    250

    395

    405

    425

    350

    355

    370

    12-Φ23

    12-Φ28

    12-Φ31

    300

    12"

    270

    445

    460

    485

    400

    410

    430

    12-Φ23

    12-Φ28

    16 -Φ31

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