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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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