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Rubber Lined Dual Plate Check Valve
Check Valve &Strainer

Rubber Lined Dual Plate Check Valve

Size: 1/2"-10"/DN15-DN250

Port: Full Port

Working Pressure: PN14-PN40

Connection Ends: Wafer

Seal: Metal

Working Temp: -196ºC~550ºC

Suitable Medium: Water, Natural Gas, Oil and some corrosive liquid

Description

Wafer type with mounting loops, NBR or EPDM lined nodular cast iron body, spring tension dual check valve with soft sealing AlBr plates.

    Product Details

    A rubber line check valve, also known as a duckbill valve or rubber flap valve, is a type of check valve that is commonly used in applications where the flow of fluids or gases needs to be regulated in one direction.

    The valve is made of flexible rubber material and is designed to allow flow in one direction while preventing backflow or reverse flow. It consists of a conical or flat rubber sleeve or flaps that act as a one-way door. When the pressure on the upstream side of the valve is greater than the pressure on the downstream side, the valve opens, allowing fluid or gas to flow through. When the pressure on the downstream side becomes greater than the upstream side, the valve closes, preventing backflow.

    Rubber line check valves are often used in various industries, including wastewater treatment, sewage systems, drainage systems, irrigation systems, and industrial piping systems. They are preferred in applications where a tight seal is required, as the rubber material provides excellent sealing properties.

    These valves are typically easy to install and require minimal maintenance. However, it is important to select the appropriate size and material of the valve based on the specific application requirements.

    Key Features

    Excellent backflow prevention
    Low flow resistance
    Wide material selection
    Stable Operation

    Specification

    Specification

    NO.

    Part

    Material

    Code

    1

    Alignment Body

    Nodular Cast Iron

    GGG40.3

    2

    Insert Body

    Nodular Cast Iron

    GGG40.3

    3

    Set Screw

    Steel

    -

    4

    Liner

    NBR/EPDM

    -

    5

    Spring

    Stainless Steel

    SS304/SS316

    6

    Plate

    Aluminium Bronze alloy

    C954

    7

    Shaft

    Stainless Steel

    SS316

    8

    Shaft Plug

    Stainless Steel

    SS316

    9

    Thrust Washer

    Teflon

    -

    Dimensions

    Size

    A

    B

    C

    D

    E

    F(PN10/PN16)

    G(PN10/PN16)

    H

    K

    Weight(kg

    DN50

    159

    101

    84.8

    66.7

    50

    125

    18

    28.5

    47.6

    54

    2.27

    DN65

    179

    120

    99

    79.4

    50

    145

    18

    36.5

    58.7

    54

    2.72

    DN80

    200

    133

    116

    92.1

    50

    160

    18

    41.3

    69.9

    54

    3.63

    DN100

    220

    171

    143

    118

    60

    180

    18

    54

    87.3

    63.5

    6.81

    DN125

    250

    198

    172

    144

    63

    210

    18

    67.5

    113

    66.7

    9.08

    DN150

    285

    222

    201

    172

    75.5

    240

    22

    80.2

    141

    79.4

    11.8

    DN200

    340

    280

    255

    222

    94.5

    295

    22

    106

    192

    98.4

    19.52

    DN250

    406

    336

    309

    276

    97.5

    350/355

    22/26

    130

    230

    102

    26.33

    DN300

    482

    406

    366

    327

    126

    400/410

    22/26

    159

    275

    130

    45.4

    DN350

    533

    450

    394

    356

    176

    460/470

    22/26

    172

    305

    181

    60.29

    DN400

    596

    488

    488

    406

    158

    515/525

    26/30

    197

    356

    162

    77.18

    DN450

    635

    545

    506

    460

    180

    565/585

    26/30

    222

    406

    184

    99.88

    DN500

    715

    595

    553

    508

    211

    620/650

    26/33

    248

    460

    216

    130.3

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