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      Forged steel gate valve

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      Forged steel A105 straight flange gate valve Z41H

      Date:[2017-03-15]    hits: Forged steel A105 straight flange gate valve Z41H

      Forged steel A105 straight flange gate valve Z41H

      Forged steel gate valve belongs to a valve forging, valve opening and closing parts is ram, RAM direction of motion perpendicular to the direction of the fluid, valve can only be fully open and fully closed, can not be adjusted and the throttle. According to the sealing surface configuration can be divided into wedge gate valve and parallel gate valve, most of the valve is sealed by force, that the valve is closed, to rely on external pressure to force the gate to the seat to ensure the sealing surface of the seal.

      A summary:

      Forged steel gate valve is a gate opening and closing parts, RAM direction of motion perpendicular to the direction of the fluid, valve can only be fully open and fully closed, can not be adjusted and the throttle. Gate has two sealing surfaces, the most commonly used mode gate valve of the two sealing surface to form a wedge, wedge angle varies with the valve parameters, usually 50 degrees, the temperature is not high when the media is at a temperature of 52 degrees 52'. Wedge gate valve can be made into a whole, called the rigid gate; can also be made to produce micro deformation of ram, in order to improve its process of deviation, make up the sealing surface angle in the process, the gate is called the flexible gate.

      Two. Classification:

      The type of gate valve, sealing surface configuration can be divided into wedge gate valve and parallel gate valve, wedge gate type valve can be divided into: single gate type, dual gate plate and the flexible gate type; parallel gate type valve can be divided into single and dual gate gate plate. According to the thread position of the valve stem can be divided into two kinds of rod and gate valve.

      Three. Working principle:

      When the valve is closed, the sealing surface can only rely on media pressure to seal, that is, to rely on the pressure of the media to the sealing surface of the gate pressure 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 the use of forced seal, that is, when the valve is closed, to rely on external forces forced the gate pressure to the valve seat to ensure the sealing surface sealing. Gate valve with the valve stem with a straight line movement, called the lift rod gate valve (also known as the rod valve). Usually in the lift rod with trapezoidal thread, through the top of the nut and the valve body of the guide groove, the rotary motion into linear motion, that is, the operating torque into operation thrust. When the valve is opened, when the height of the ram is equal to 1:1 times of the valve diameter, the fluid channel is completely open, but this position is not monitored during operation. In actual use, the stem apex as a sign, that is not open position, as its fully open position. Temperature changes appear to consider locking phenomenon, usually open to the vertex position, and then rewind 1/2 1 circle, as a fully open valve position. Therefore, the valve fully open position, according to the location of the gate (ie travel) to determine. Some gate valve, stem nut is located in the gate, hand wheel rotation to drive the stem rotation, so that the gate lift, this valve is called the rotating rod or gate valve called dark rod.

      閥體

      WCB

      WC1

      WC6

      WC9

      ZGCr5Mo

      CF8

      CF8M ZGCr18Ni9Ti

      CF3

      CF3M

      閥蓋

      WCB

      12Cr1MoV WC1

      12Cr1MoV WC6

      12Cr1MoV WC9

      12Cr1MoV ZGCr5Mo

      304 CF8

      316 CF8M

      CF3

      CF3M

      支架

      WCB

      WCB

      WCB

      WCB

      WCB

      CF8

      CF8M

      CF3

      CF3M

      閘板

      WCB

      WC1

      WC6

      WC9

      ZGCr5Mo

      CF8

      CF8M

      CF3

      CF3M

      閥桿

      2Cr13

      25Cr2MoV

      閥座

      25

      304

      304

      304

      304

      304

      304

      304

      304

      密封環

      包覆墊、增強柔性石墨

      填料

      增強柔性石墨

      閥桿螺母

      ZCuA110Fe3


      Flange standards comply with API 602, MSS-SP-118 (standard) and ANSI B16.34, B35352.

      Inspection and testing by API598, mark by MSS-Sp-25.

      The following structure

      Full diameter or diameter reduction

      Structure length by ANSI B16.10

      Flange size by ANSI B16.5

      Pressure self tightening valve cover

      Strut type (OS&Y)

      Self centering press sleeve type

      Integral seal seat

      Integral valve flange

      The welding end conforms to ASME B16.25

      RTJ body valve cover connection form

      Bolt connection, wound gasket seal valve cover, threaded connection, all welded seal valve cover and screw connection internal pressure self tight seal valve cover

      Forged steel flanged end gate valve


      150Lb-600Lb standard material list

      序號

      零件名稱

      CS to ASTM

      AS to ASTM

      SS to ASTM

      Type A105N

      Type F22

      Type F304(L)

      Type F316(L)

      1

      閥體

      A105N

      A182 F22

      A182 F304(L)

      A182 F316(L)

      2

      閥座

      A276 420

      A276 304

      A276 304(L)

      A276 316(L)

      3

      閘板

      A182 F430

      A182 F304

      A182 F304(L)

      A182 F316(L)

      4

      閥桿

      A182 F6a

      A182 F304

      A182 F304(L)

      A182 F316(L)

      5

      墊片

      316夾柔性石墨

      316夾PTFE

      6

      閥蓋

      A105

      A182 F22

      A182 F304(L)

      A182 F316(L)

      7

      閥蓋螺栓

      A193 B7

      A193 B16

      A193 B8

      A193 B8M

      8

      圓柱銷

      A276 420

      A276 304

      9

      填料壓套

      A276 410

      A182 F304(L)

      A182 F316(L)

      10

      活節螺栓

      A193 B7

      A193 B16

      A193 B8

      A193 B8M

      11

      填料壓板

      A105

      A182 F304

      12

      螺母

      A194 2H

      A194 4

      A194 8

      A194 8M

      13

      閥桿螺母

      A276 420

      14

      鎖緊螺母

      A194 2H

      A194 4

      A194 8

      A194 8M

      15

      銘牌

      SS

      16

      手輪

      A197

      17

      潤滑墊片

      A273 431

      18

      填料

      柔性石墨

      PTFE

      適用介質

      水、蒸汽、油品等

      水、蒸氣、油品等

      硝酸、醋酸等

      適用溫度

      -29°C~425°C

      -29°C~550°C

      -29°C~200°C


      Note: other materials for customer requirements can also be used. Matching of sealing surface material is determined by the customer specified internal code.

      CS= carbon steel; AS= alloy steel; SS= stainless steel;

      Dimensions (mm) and weight (Kg)

      NPS

      1/2

      3/4

      1

      11/4

      11/2

      2

      L(RF)
      L1(BW)

      150Lb

      108

      117

      127

      140

      165

      203

      300Lb

      145

      152

      165

      178

      190

      216

      600Lb

      165

      190

      216

      229

      241

      292

      H(開)

      150,300Lb

      158

      169

      197

      236

      246

      283

      600Lb

      169

      197

      236

      246

      283

      320

      W

      100

      100

      125

      160

      160

      180

      重量

      150

      RTJ

      4.5

      5.2

      8.2

      11.5

      12.5

      20.3

      BW

      2.8

      3.3

      5.4

      7.1

      8.2

      12.5

      300

      RTJ

      4.8

      6.2

      9.3

      14

      15.5

      23.4

      BW

      3.5

      4.4

      6.8

      8.1

      9.2

      15.4

      600

      RTJ

      5.9

      7.4

      10.4

      16.2

      17.5

      18.3

      BW

      4.5

      5.1

      8.2

      10.5

      12.4

      20.1

      Forged steel flange gate valve 900Lb-1500Lb standard material list 

      序號

      零件名稱

      CS to ASTM

      AS to ASTM

      SS to ASTM

      Type A105N

      Type F22

      Type F304(L)

      Type F316(L)

      1

      閥體

      A105N

      A182 F22

      A182 F304(L)

      A182 F316(L)

      2

      閥座

      A276 420

      A276 304

      A276 304(L)

      A276 316(L)

      3

      閘板

      A182 F430

      A182 F304

      A182 F304(L)

      A182 F316(L)

      4

      閥桿

      A182 F6a

      A182 F304

      A182 F304(L)

      A182 F316(L)

      5

      墊片

      316夾柔性石墨

      316夾PTFE

      6

      閥蓋

      A105

      A182 F22

      A182 F304(L)

      A182 F316(L)

      7

      閥蓋螺栓

      A193 B7

      A193 B16

      A193 B8

      A193 B8M

      8

      圓柱銷

      A276 420

      A276 304

      9

      填料壓套

      A276 410

      A182 F304(L)

      A182 F316(L)

      10

      活節螺栓

      A193 B7

      A193 B16

      A193 B8

      A193 B8M

      11

      填料壓板

      A105

      A182 F304

      12

      螺母

      A194 2H

      A194 4

      A194 8

      A194 8M

      13

      閥桿螺母

      A276 420

      14

      鎖緊螺母

      A194 2H

      A194 4

      A194 8

      A194 8M

      15

      銘牌

      SS

      16

      手輪

      A197

      17

      潤滑墊片

      A273 431

      18

      填料

      柔性石墨

      PTFE

      適用介質

      水、蒸汽、油品等

      水、蒸氣、油品等

      硝酸、醋酸等

      適用溫度

      -29°C~425°C

      -29°C~550°C

      -29°C~200°C

      Note: other materials for customer requirements can also be used. Matching of sealing surface material is determined by the customer specified internal code.

      CS= carbon steel; AS= alloy steel; SS= stainless steel;

      Dimensions (mm) and weight (Kg)


      NPS

      1/2

      3/4

      1

      11/4

      11/2

      2

      L(RTJ)

      900-1500Lb

      216

      229

      254

      279

      305

      371

      L1(BW)

      900-1500Lb

      216

      229

      254

      279

      305

      368

      H(開)

      197

      197

      236

      246

      283

      330

      W

      125

      125

      160

      160

      180

      200

      重量

      RTJ

      7.2

      11.5

      15.6

      16.2

      22.6

      32.8

      BW

      5.2

      9.3

      12.4

      13.8

      18.9

      27.5


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