1. Pressure/Vacuum valve (Basical structure)


       

       

      The dimension parameter of the CF-ISO high-velocity relief valve

      No.

      DN

      D1

      D2

      D3

      L

      H

      Assembly hole

      8

      250

      320

      350

      395

      460

      730

      12x∮22

      7

      200

      258

      295

      340

      455

      730

      8x∮18

      6

      150

      202

      225

      265

      385

      670

      8x∮18

      5

      125

      178

      200

      240

      380

      545

      8x∮18

      4

      100

      148

      170

      210

      285

      485

      4x∮18

      3

      80

      128

      150

      180

      285

      460

      4x∮18

      2

      65

      110

      130

      160

      255

      410

      4x∮14

      1

      50

      90

      110

      140

      255

      410

      4x∮14


       Remarks:flange executive standards:GB2501-89,DN50-DN150, nominal pressure is 0.6Mpa; DN200、DN250, nominal pressure is 1.6Mpa(is equal to ISO2084-1974、ISO2441-1975)。

       

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