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    Flange gate valve

    Location:Home > Flange gate valve

    Z41W stainless steel flange valve

    Date:[2016-10-20]    hits: Z41W stainless steel flange valve

    Stainless steel flanged gate valve Z41W

    Gate valve (gate valve) opening and closing parts is the gate, the direction of movement of the gate and the direction of the fluid perpendicular to the gate valve can only be fully open and fully closed, can not be adjusted and throttling. Gate has two sealing surfaces, the most common mode of the two gate valve sealing surface to form a wedge, wedge angle varies with the valve parameters, usually 50, the medium temperature is not high when the 2 ° 52 '. Wedge gate valve can be made into a whole, called the rigid gate; can also be made to produce trace deformation of the gate to improve its technology to make up the angle of the sealing surface in the process of generating the deviation, the gate The plate is called the elastic shutter. Stainless steel gate valve material is divided into 304 stainless steel gate valve, 316 stainless steel gate valve, 321 stainless steel gate valve. Said method is: Z41H-16P.

    The type of stainless steel gate valve, according to the sealing surface configuration can be divided into wedge gate type gate valve and parallel gate type gate valve, wedge gate type gate valve can be divided into: single gate type, double gate type and elastic gate type; parallel gate type gate valve Can be divided into single-gate type and double-gate type. According to the stem of the screw position, can be divided into two kinds of open-gate valve and the dark rod gate valve. This type of valve in the pipeline should generally be installed horizontally.

    Stainless steel gate valve structure Open the valve, when the gate lifting height is equal to 1: 1 times the valve diameter, the fluid channel is fully open, but in operation, this position can not be monitored. The actual use, is based on the vertex of the valve stem as a sign, that is fixed position, as its full open position. In order to consider the phenomenon of temperature change lock phenomenon, usually in the open to the vertex position, and then back 1 / 2-1 laps, as a fully open valve position. Therefore, the valve fully open position, according to the gate position (ie stroke) to determine.

    Some valve, stem nut located in the gate, the hand wheel rotation driven stem rotation, leaving the gate lift, this valve is called the rotary rod gate valve, or called the dark bar.

    Gate valve with the valve stem with a straight line movement, called the lift bar valve (also known as the Ming Barrier valve). Trapezoidal threads are usually provided on the lift rods. The rotary motion is changed to linear motion through the nut on the top of the valve and the guide groove on the valve body, ie the operating torque is changed to the operating thrust. Sealing surface can only rely on medium pressure to seal, that is, relying on the media pressure to the gate of the sealing surface to the other side of the valve seat to ensure the sealing surface of the seal, which is self-sealing. Most of the gate valve is forced seal, that is, the valve is closed, to rely on external force to force the gate pressure to the valve seat to ensure the sealing surface of the seal.

    MPa

    DN

    L

    D 1

    D 2

    D 3

    B

    Z-? d

    H

    H1

    D O

    1.0

    1.6

    1.0

    1.6

    1.0

    1.6

    1.0/1.6

    15

    108

    46

    65

    95

    14

    4-14

    220

    240

    120

    20

    117

    56

    75

    105

    16

    4-14

    255

    284

    140

    25

    127

    65

    85

    115

    16

    4-14

    275

    303

    160

    32

    140

    76

    100

    140

    18

    4-18

    280

    321

    180

    40

    165

    84

    110

    150

    18

    4-18

    300

    352

    200

    50

    178

    99

    125

    165

    20

    4-18

    358

    438

    240

    65

    190

    118

    145

    185

    20

    4-18

    375

    450

    240

    80

    203

    132

    160

    200

    20

    8-18

    433

    528

    280

    100

    229

    156

    180

    220

    22

    8-18

    502

    620

    300

    125

    254

    184

    210

    250

    22

    8-18

    612

    753

    320

    150

    267

    211

    240

    285

    24

    8-23

    676

    847

    360

    200

    292

    266

    295

    340

    24

    8-22

    12-22

    820

    1039

    400

    250

    330

    320

    350

    355

    395

    405

    26

    12-22

    12-26

    969

    1245

    450

    300

    356

    370

    400

    410

    445

    460

    28

    12-23

    12-26

    1142

    1472

    560

    2.5

    15

    108

    45

    65

    95

    14

    4-14

    220

    240

    120

    20

    117

    55

    75

    105

    16

    4-14

    255

    284

    140

    25

    127

    65

    85

    115

    16

    4-14

    275

    303

    160

    32

    140

    78

    100

    135

    18

    4-18

    280

    321

    180

    40

    165

    85

    110

    145

    18

    4-18

    300

    352

    200

    50

    178

    100

    125

    160

    20

    4-18

    358

    438

    240

    65

    190

    120

    145

    180

    22

    8-18

    375

    450

    240

    80

    203

    135

    160

    195

    24

    8-18

    433

    528

    280

    100

    229

    160

    190

    230

    24

    8-23

    502

    620

    300

    125

    254

    188

    220

    270

    26

    8-25

    612

    753

    320

    150

    267

    218

    250

    300

    28

    8-25

    676

    847

    360

    200

    292

    278

    310

    360

    30

    12-25

    820

    1039

    400

    250

    330

    332

    370

    425

    32

    12-30

    969

    1245

    450

    300

    356

    390

    430

    485

    34

    16-30

    1142

    1472

    560

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