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              Location:PRODUCTS >> Gate valve >> GB gate valve
              GB gate valve
              Model: Z41H
              Nominal diameter: DN50 ~ 1200mm
              Nominal pressure: PN10 ~ 160MPa
              Working temperature: -29 ℃ ~ + 600 ℃
              Main material: carbon steel, stainless steel, alloy
              Design and manufacture: GB12234
              Structural length: GB12221
              Flange Dimensions: GB9113 JB79
              pressure temperature: GB9131
              Test test: GB / T13927, JB / T9092

              First, the national standard gate valve introduction

              Purpose and Features Gate valve is one of the most common opening and closing valve, the use of the gate up and down work to connect (fully open) and cut off (fully closed) in the pipeline fluid medium. 
               1, the fluid resistance is small, the sealing surface by the media erosion and erosion of small (gate opening height high). 
               2, open a more powerful, good sealing performance, the flow of media is not restricted, not spoiler, not down pressure. 
               3, the shape is simple, manufacturing technology is good, a wide range of applications.


               Pressure test

              Nominal pressure 1.6 2.5 4.0 6.4 10.0 16.0
              Strength test 2.4 3.8 6.0 9.6 15.0 24.0
              Water seal test 1.8 2.8 4.4 7.0 11.0 18.0
              Seal test 1.8 2.8 4.4 7.04 11.0 18.0
              Gas seal test 0.4-0.7


               Second, the main components of GB valve material and performance

              Body cover Valve stem Sealing surface Gasket filler Operating
              temperature
              Suitable media
              WCB 2Cr13 13CrSTL Body
              Material Nylon
              Reinforced flexible
              graphite
              1Cr13 /flexible
              graphite
              08 mild steel
              0Cr18Ni9Ti0Cr17Ni12 
              Mo2TiXD550F (T) PTFE
              Flexible
              Graphite
              Reinforced 
              Flexible
              Graphite 
              SFB
              /260SFP 
              /260PTFE
              ≤425 Water,
              steam,
              oil
              WC1 38CrMoA125Cr2MoV ≤450
              WC6 ≤540
              WC9 ≤570
              ZGCr5Mo ≤540
              ZG1Cr18Ni9Ti 1Cr18Ni9Ti ≤200 Sales acid
              ZG1Cr18Ni12Mo2Ti 1C18Ni12Mo2Ti ≤200 Acetic acid


               Third, the main gate size GB

              PN1.6MPa specifications of the main dimensions

              1.6MPa DN L d D1 D2 b n-Φd H D0
              Planar method  
              RF 
              Z40H 
              Z40Y 
              Z40W 
              Z40F 
              Z40NZ41H 
              Z41Y 
              Z41F 
              Z41N16C  
              16P 
              16R 
              16I
              15 130 95 65 45 14 4-Φ14 170 120
              20 150 105 75 55 14 4-Φ14 190 140
              25 160 115 85 65 14 4-Φ14 205 160
              32 180 135 100 78 16 4-Φ18 270 180
              40 200 145 110 85 16 4-Φ18 310 200
              50 250 160 125 100 16 4-Φ18 358 240
              65 265 180 145 120 18 4-Φ18 373 240
              80 280 195 160 135 20 8-Φ18 435 280
              100 300 25 180 155 20 8-Φ18 500 300
              125 325 245 210 185 22 8-Φ18 614 320
              150 350 280 240 210 24 8-Φ23 674 320
              200 400 335 295 265 26 12-Φ23 818 400
              250 450 405 355 320 30 12-Φ25 969 450
              300 500 460 410 375 30 12-Φ25 1145 500
              350 550 520 470 435 34 16-Φ25 1280 500
              400 600 580 525 485 36 16-Φ30 14852 560
              450 650 640 585 545 40 20-Φ30 1541 600
              500 700 705 650 608 44 20-Φ34 1676 640
              600 800 840 770 718 48 20-Φ41 1874 720
              700 900 910 840 788 50 24-Φ41 2083 800
              800 1000 1020 950 898 52 24-Φ41 2400 950
              900 1100 1120 1050 998 64 28-Φ41 2950 1000
              1000 1200 1255 1170 1110 56 28-Φ48 3245 1000

               

              PN2.5MPa specifications of the main dimensions

              2.5MPa DN L D D1 D2 b n-Φd H DO
              Planar method  
              RF 
              Z40H 
              Z40Y 
              Z40W 
              Z40F 
              Z40NZ41H 
              Z41Y 
              Z41F 
              Z41N25C  
              25P 
              25R 
              25I
              15 130 95 65 45 16 4-Φ14 172 120
              20 150 105 75 55 16 4-Φ14 191 140
              25 160 115 85 65 16 4-Φ14 205 160
              32 180 135 100 78 18 4-Φ18 270 180
              40 200 145 110 85 18 4-Φ18 300 200
              50 250 160 125 100 20 4-Φ18 357 240
              65 265 180 145 120 22 8-Φ18 376 240
              80 280 195 160 135 22 8-Φ18 434 280
              100 300 230 190 160 24 8-Φ23 502 300
              125 325 270 220 188 28 8-Φ25 613 320
              150 350 300 250 218 30 8-Φ25 675 320
              200 400 360 310 278 34 12-Φ25 819 400
              250 450 425 370 332 36 12-Φ30 968 450
              300 500 485 430 390 40 16-Φ30 1144 500
              350 550 550 490 448 44 16-Φ34 1280 500
              400 600 610 550 505 48 16-Φ34 1451 560
              450 650 660 600 555 50 20-Φ34 1542 600
              500 700 730 660 510 52 20-Φ41 1678 640
              600 800 840 770 718 56 20-Φ41 1875 720
              700 900 955 875 815 60 24-Φ28 2082 800
              800 1000 1070 990 930 64 24-Φ28 2403 950
              900 1100 1180 1090 1025 66 28-Φ54 2952 1000
              1000 1200 1305 1210 1140 68 28-Φ58 3244 1000

              PN4.0MPa ~ 6.4 MPa Specifications The main dimensions

              4.0MPa DN L D D1 D2 D6 b n-Φd H D0
              Concave method  
              MFM 
              Z40H 
              Z40Y 
              Z40W 
              Z40F 
              Z40NZ41H 
              Z41Y 
              Z41F 
              Z41N40 
              40P 
              40R 
              40I
              15 130 95 65 45 40 16 4-Φ14 134 120
              20 150 105 75 55 51 16 4-Φ14 188 140
              25 160 115 85 64 58 16 4-Φ14 206 140
              32 180 135 100 78 66 18 4-Φ18 272 180
              40 200 145 110 85 76 18 4-Φ18 322 180
              50 250 160 125 100 88 20 4-Φ18 370 240
              65 280 180 145 120 110 22 8-Φ18 394 280
              80 310 195 160 135 121 22 8-Φ18 455 300
              100 350 230 190 160 150 24 8-Φ23 550 320
              125 400 270 220 188 176 28 8-Φ25 636 35
              150 450 300 250 218 204 30 8-Φ30 706 400
              200 550 375 320 282 260 38 12-Φ34 859 450
              250 650 445 385 345 313 42 12-Φ34 1016 560
              300 750 510 450 408 364 46 16-Φ34 1200 640
              350 850 570 510 465 422 52 16-Φ41 1340 640
              400 950 655 585 535 474 58 16-Φ41 1495 720
              450 1050 680 610 560 524 60 20-Φ48 1581 800
              500 1150 755 670 612 576 62 20-Φ54 1790 950
              600 1350 890 695 730 678 62 20-Φ14 2035 950
              6.4MPa 15 1700 105 75 55 40 18 4-Φ18 1425 160
              Concave method  
              MFM 
              Z40H 
              Z40Y 
              Z40W 
              Z40F 
              Z40NZ41H 
              Z41Y 
              Z41F 
              Z41N64 
              64P 
              64R 
              64I
              20 190 125 90 68 51 20 4-Φ18 142 160
              25 210 135 100 78 58 22 4-Φ23 214 200
              32 230 150 110 82 66 24 4-Φ23 269 200
              40 240 165 125 95 76 24 4-Φ23 343 240
              50 250 175 135 105 88 26 4-Φ23 370 240
              65 280 200 160 130 110 28 8-Φ23 396 280
              80 310 210 170 140 121 30 8-Φ23 458 300
              100 350 250 200 168 150 32 8-Φ25 553 300
              125 400 295 240 202 176 36 8-Φ30 638 350
              150 450 340 280 240 204 38 8-Φ34 718 400
              200 550 405 345 300 260 44 12-Φ34 873 450
              250 650 470 400 352 313 48 12-Φ41 1050 560
              300 750 530 460 412 364 54 16-Φ41 1203 640
              350 850 595 525 475 422 60 16-Φ41 1394 720
              400 950 670 585 525 474 66 16-Φ48 1645 800
              500 1150 800 705 640 576 70 20-Φ54 2285 950
              600 1350 930 820 750 678 70 20-Φ58 2610 950

               

              PN10.0MPa ~ 16.0MPa (Specification main dimensions)

              10.0MPa DN L D D1 D6 b b-Φd H D0
              Concave method  
              MFM 
              Z40H 
              Z40Y 
              Z40WZ41H 
              Z41Y 
              Z41W100 
              100P 
              100R 
              100I
              15 170 105 75 40 20 4-Φ14 175 160
              20 190 125 90 51 22 4-Φ18 180 160
              25 210 135 100 58 24 4-Φ18 310 180
              32 230 150 110 66 24 4-Φ23 320 200
              40 240 165 125 76 26 4-Φ23 360 200
              50 250 195 145 88 28 4-Φ25 490 240
              65 280 220 170 110 32 8-Φ25 540 240
              80 310 230 180 121 34 8-Φ25 573 280
              100 350 265 210 150 38 8-Φ30 575 320
              125 400 310 250 176 42 8-Φ34 744 360
              150 450 350 290 204 46 12-Φ34 800 400
              200 500 430 360 260 54 12-Φ41 800 500
              250 650 500 430 313 60 12-Φ41 1050 640
              300 750 585 500 364 70 16-Φ48 1208 720
              350 850 655 560 422 76 16-Φ54 1410 720
              400 950 715 620 474 80 16-Φ54 1655 800
              16.0MPa 15 170 110 75 40 24 4-Φ18 230 160
              Concave method  
              MFM 
              Z40H 
              Z40Y 
              Z40WZ41H 
              Z41Y 
              Z41W160 
              160P 
              160R 
              160I
              20 190 130 90 51 26 4-Φ23 260 180
              25 210 140 100 58 28 4-Φ23 280 200
              32 2310 165 115 66 30 4-Φ25 312 200
              40 240 175 125 76 32 4-Φ27 350 240
              50 300 210 165 88 36 8-Φ25 412 280
              65 340 245 190 110 44 8-Φ30 560 320
              80 390 260 205 121 46 8-Φ30 585 3.50
              100 450 300 240 150 48 8-Φ34 630 400
              125 525 355 285 176 60 8-Φ41 723 500
              150 600 390 318 204 66 12-Φ41 820 560
              200 750 480 400 260 78 12-Φ8 990 720
              250 850 580 485 313 88 12-Φ54 1104 800
              300 950 665 570 364 100 16-Φ54 1314 800


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