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API cast steel gate valve

Technical Parameters

Product model: Z41H/W/Y

Nominal diameter: NPS1/2"~40"

Nominal pressure: Class150~2500Lb

Main material: ASTM A216 WCB

Drive mode: handwheel, gear, electric, pneumatic


Product Details

Product Structure Features

API cast steel gate valves are used to cut or connect the pipe media in Class 150~2500 and working temperatures ≤600℃, in oil industry, chemical industry, fossil-fired power plants.


The main structure features include:

1.The products designs are in accordance with the API600 or API6D, with rational structure, reliable seal, excellent performance, and pretty appearance.

2.Co hard alloy welded sealing surface、with pressures≥Class600 which is wearing resistant, erosion proof, abrasion proof and long-lived.

3.The surface and the adjusting media of the valve shaft are nitrogenizated so that it is erosion and abrasion resistant.

4.The central cavity with pressures≥Class900 adopts self-tightening sealing structure,which means that the sealing will rise with the intramural pressure, and the sealing is highly reliable.

5.There is backward sealing structure in the valve, so the sealing is reliable.

6.The material of the filling and the size of the flanged ends & butt-welding ends can be chosen and matched according to the applications and the applications and the requirements of the users. That can satisfies all kinds of working requirements.


Main connection size

DN 150Lb RF
mm in L D D1 D2 b Z-φd H D0
15 1/2 108 89 60.5 35 11.5 4-φ16 165 100
20 3/4 117 98 70 43 13 4-φ16 190 100
25 1 127 108 79.5 51 14.5 4-φ16 230 120
32 11/4 140 117 89 63.5 16 4-φ16 245 120
40 11/2 165 127 98.5 73 17.5 4-φ16 285 150
50 2 178 152 120.5 92 19.5 4-φ19 325 150
65 21/2 190 178 139.5 105 22.5 4-φ19 350 180
80 3 203 190 152.5 127 24 4-φ19 380 200
100 4 229 229 190.5 157 24 8-φ19 460 200
125 5 254 254 216 186 24 8-φ22 630 250
150 6 267 279 241.5 216 25.5 8-φ22 635 250
200 8 292 343 298.5 270 2 8-φ22 765 280
250 10 330 406 362 324 30.5 12-φ26 895 300
300 12 356 483 432 381 32 12-φ26 1080 350
350 14 381 533 476 413 35 12-φ29 1295 350
400 16 406 497 540 470 37 16-φ29 1435 400
450 18 432 635 578 533 40 16-φ32 1625 400
500 20 457 699 635 584 43 20-φ32 1830 450
600 24 508 813 749.5 692 48 20-φ35 2175 500
650 26 559 786 745 711 41.5 36-φ22 2235 550
700 28 610 837 795 762 44.5 40-φ22 2310 600
750 30 610 887 846 813 44.5 44-φ22 2695 600
800 32 660 941 900 864 46 48-φ22 3710 -
900 36 711 1057 1011 972 52.5 44-φ26 3925 -
1000 40 811 1175 1121 1080 56 44-φ29 4320 -



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