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  • National standard cast steel gate valve
  • National standard cast steel gate valve
  • National standard cast steel gate valve
  • National standard cast steel gate valve
  • National standard cast steel gate valve
  • National standard cast steel gate valve
  • National standard cast steel gate valve
National standard cast steel gate valve
National standard cast steel gate valve
National standard cast steel gate valve
National standard cast steel gate valve
National standard cast steel gate valve
National standard cast steel gate valve
National standard cast steel gate valve
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National standard cast steel gate valve

General valves are indispensable control components in industrial piping systems, with a wide range of functions. It mainly includes gate valve, globe valve, check valve, regulating valve, ball valve, etc., which are widely used in petrochemical, electric power, metallurgy, water treatment and other fields. Universal valve has the characteristics of simple structure, convenient operation and reliable performance, and plays an important role in industrial production.

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smkvalve@126.com

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+86-0592-6367928

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Product classification

General Purpose Valve Series

Gate valve series

Key words:

SMAK

Product Details

GB Cast steel gate valve

Main parameters of the product/Main parameterof the products

Basic model Serialmodels Z11H、Z11Y、Z41H、Z41Y、Z441H、Z441Y、Z541H、Z541Y、Z941H、Z941Y
Pressure rating range Pressuregraderange PN1.6~42.0MPa(Class150~2500)
Path range Driftdiameterrange DN15-1000mm(1"~40")
Drive mode Drivingmanner Handwheel drive Handwheeldriving 齿轮动、电动Geardrivingandelectricdriving
Scope of application Scopeofapplication Class"150~300(PN1.6~4.0) Class400~600(PN6.4-10.0) Class900~2500(PN15.0-42.0) 2"~40"(DN50-1000mm)
1/2"~24"(DN15~600mm) 1/2"~12"(DN15~300mm) 1/2"~10"(DN15~250mm)

产品性能规范/Products performance specification

Pressure rating
Pressure		 常温试验压力(MPa) Testing pressure at constant temperature (Mpa) Applicable temperature
Applicable temperature		 Applicable media
Applicable medium
Shell test
The shell testing		 Sealing test
Seal and test		 Upper seal test
Have and seal testing
Nominal pressure (MPa)
Nominal rating pressure (PN)		 1.6 2.4 1.76 1.76 -196-600 ℃ Water, oil, steam, etc.
Water, oil, steam ,etc.
2.5 3.8 2.75 2.75
4.0 6.0 4.4 4.4
6.4 9.6 7.04 7.04
10.0 15.0 11.0 11.0
16.0 24.0 17.6 17.6
25.0 37.5 27.5 27.5
Pound Class (Lb)
Pound grade (Class)		 150 3.0 2.2 2.2
300 7.5 5.5 5.5
600 15.0 11.0 11.0
900 22.5 16.5 16.5
1500 37.5 27.5 27.5
2500 63.0 46.2 46.2

Product structure characteristics/Products design features

Flange connection cast steel gate valve is suitable for nominal pressure PNI1.6 ~ 42.0MPa(Class150 ~ 2500), working temperature ≤ 600 ℃; petroleum, chemical, thermal power station and other working conditions of the pipeline, cut off or connected to the pipeline medium.
Its main structural features are:
1. The design and manufacture are strict with GB/T12234, API600 and API602 standards. The product has reasonable structure, reliable sealing, excellent performance and beautiful appearance.
2, the sealing surface surfacing Co-based hard alloy, wear resistance, corrosion resistance, anti-scratch performance, long service life.
3. The valve stem has good corrosion resistance and abrasion resistance after tempering and surface nitriding treatment.
4. The cavity with nominal pressure ≥ 15.01MPa(Class900) adopts self-sealing structure, and the sealing performance is enhanced with the increase of pressure, thus ensuring the sealing performance.
5. The valve is equipped with an inverted sealing structure, which is reliable in sealing.
6. The material of the parts, the size of the flange and the butt welding end can be reasonably selected according to the actual working conditions or user requirements to meet various engineering needs.

Products in standard/Technical specification

Structure form Structural formation Bolted bonnet open stem bracket structure Bolt-jointed bonnet outside stem yoke structure
Drive mode Driving manner 手动、齿轮动、Hand-operated,Gear-operated and Electric-driving
Design Standard Design standard GB/T 12234
Face to face length GB/T 12221
Connecting flange Flanged ends GB/T 9113、JB/T79、HG20592
Test & inspection JB/T9092

Note: the valve connecting flange and welding end size can be designed and manufactured according to user requirements. Notes: The sizes of valve connecting flange and butt-welding terminas can be designed according to customer's requirement.

Major parts material form

Serial No. Part name Material Material
1 Body WCB、WC1、WC6、WC9、C5、CF8、CF8M、CF8C、CF3、CF3M
2 Gate disc WCB、WC1、WC6、WC9、C5、CF8、CF8M、CF8C、CF3、CF3M
3 Stem 1013、2Cr13、1Cr18Ni9、0Cr18Ni12Mo2Ti、20Cr1Mo1V、25Cr2Mov
4 Stud 35CrMoA、0Cr18Ni9、0Cr17Ni12Mo2、25Cr2MoV
5 Six angle nuts 45、35CrMoA、25Cr2MoV、0Cr18Ni9、0Cr17Ni12Mo2
6 Gasket Flexible Graphite Stainless Steel Graphite & stainless steel
7 Bonnet WCB、WC1、WC6、WC9、C5、CF8、CF8M、CF8C、CF3、CF3M
8 Packing Packing flexible graphite Graphite
9 Press-sleeve Packing 1013、2Cr13、1Cr18Ni9、0Cr18Ni12Mo2Ti
10 packing gland Packing gland WCB、CF8、CF8M、CF8C、CF3、CF3M
11 Valve stem nut Copper alloy
12 Handwheel Handwheel KTH330、QT400-17

Products in standard/Technical specification

Structure form Structural formation Pressure seal valve cover open rod bracket structure Pressure sealed bonnet outside stem yoke stmcture
Drive mode Driving manner 手动、齿轮动、电动 Hand-operated,Gear-operated and Electric-driving
Design Standard Design standard GB/T 12234
Face to face length GB/T 12221
Connecting flange Flanged ends GB/T 9113、JB/T79、HG20592
Test & inspection JB/T9092

Note: the valve connecting flange and welding end size can be designed and manufactured according to user requirements. Notes: The sizes of valve connecting flange and butt-welding terminas can be designed according to customer's requirement.

Major parts material form

Serial No. Part name Material Material
1 Body WCB、WC1、WC6、WC9、C5、CF8、CF8M、CF8C、CF3、CF3M
2 Gate disc WCB、WC1、WC6、WC9、C5、CF8、CF8M、CF8C、CF3、CF3M
3 Stem 1013、2Cr13、1Cr18Ni9、0Cr18Ni12Mo2Ti、20Cr1Mo1V、25Cr2Mov
4 Bonnet WCB、WC1、WC6、WC9、C5、CF8、CF8M、CF8C、CF3、CF3M
5 Seal ring flexible graphite Graphite
6 四合环 Tetracyclic ring 1Cr13、2Cr13、38CrMoAI
7 Stud 35CrMoA, 0Cr18Ni9, 0Cr17Ni12Mo2, 25Cr2MoV
8 Six angle nuts 45、35CrMoA、25Cr2MoV、0Cr18Ni9、0Cr17Ni12Mo2
9 Packing Packing flexible graphite Graphite
10 Bracket Yoke WCB、CF8、CF8M、CF8C、CF3、CF3M
11 Bearing Bearing 外购件 Purchasing parts
12 Valve stem nut Copper alloy
13 Handwheel Handwheel KTH330、QT400-17

Main size of outside & weight

Model: Z41H, Z41 Y, Z541H, Z541Y, Z941Y, Z941Y, GF1H *, GF1Y *, GWF1H *, GWF1Y *, GDF1H *, GDF1Y *

Transmission mode Driving 手动 Hand operated 电动 Electric driving Gear Gear operated
PN (MPa) DN (mm) L HO DO Weight (kg) H1 D1 Electric device Electric driving Weight (kg) H2 D2 Gear device Weight (kg)
1.6 15 130 170 120 5 - - - - - - - -
20 150 190 140 6.5 - - - - - - - -
25 160 205 160 9 - - - - - - - -
32 180 270 180 12 - - - - - - - -
40 200 310 200 26.5 630 590 DZW10A 87.5 - - - -
50 250 358 240 29 678 590 DZW10A 90 - - - -
65 265 373 240 33 693 590 DZW15A 96 - - - -
80 280 435 280 45 755 590 DZW20A 108 - - - -
100 300 500 300 62 820 590 DZW20A 126 - - - -
125 325 614 320 106 934 590 DZW30A 173 - - - -
150 350 674 360 135 994 590 DZW30A 199 - - - -
200 400 818 400 193 1138 590 DZW30A 254 - - - -
250 450 969 450 273 1409 810 DZW45A 310 - - - -
300 500 1145 560 380 1588 810 DZW60A 391 1310 310 B & A 0 504
350 550 1280 640 590 1755 830 DZW90 729 1468 310 B & A 0 674
400 600 1452 640 850 1902 830 DZW120 992 1780 460 BA-1 950
450 650 1541 720 910 2141 870 DZW180 1168 1880 460 BA-1 1300
500 700 1676 720 960 2276 870 DZW250 1222 2110 460 BA-2 1530
600 800 1874 800 1115 2474 870 DZW250 1376 2410 460 BA-2 2140
700 900 - - - 3046 1170 DZW350 - 2600 460 BA-2 3270
800 1000 - - - 3250 1170 DZW500 - 2860 610 BAA-3 3920
900 1100 - - - 3509 1060 DZW800 - 3170 610 BAA-3 4435
1000 1200 - - - 3873 1060 DZW1000 - - - - -

Main size of outside & weight

Model: Z41H, Z41 Y, Z541H, Z541Y, Z941H, Z941 Y, GF1H, GF1Y, GWF1H, GWF1Y, GDF1H, GDF1Y

Transmission mode Driving 手动 Hand operated 电动 Electric driving Gear Gear operated
PN(MPa) DN(mm) L HO DO Weight(kg) H1 D1 Electric device Electric driving Weight(kg) H2 D2 Gear device Weight(kg)
2.5 15 130 170 120 5.5 - - - - - - - -
20 150 190 140 7 - - - - - - - -
25 160 205 160 11 - - - - - - - -
32 180 270 180 14 - - - - - - - -
40 200 310 200 30 630 590 DZW10A 91 - - - -
50 250 358 240 34 678 590 DZW10A 95 - - - -
65 265 373 240 36 693 590 DZW15A 99 - - - -
80 280 435 280 50 755 590 DZW20A 113 - - - -
100 300 500 300 69 820 590 DZW20A 132 - - - -
125 325 614 320 116 934 590 DZW30A 181 - - - -
150 350 674 360 141 994 590 DZW30A 206 - - - -
200 400 818 400 192 1138 590 DZW30A 257 - - - -
250 450 969 450 207 1409 810 DZW45A 317 - - - -
300 500 1145 560 400 1588 810 DZW60A 412 1310 310 B & A 0 504
350 550 1280 640 631 1755 830 DZW90 750 1468 310 B & A 0 674
400 600 1452 640 900 1902 830 DZW120 1042 1780 460 BA-1 950
450 650 1541 720 1013 2141 870 DZW180 1274 1880 460 BA-1 1300
500 700 1676 720 1166 2276 870 DZW250 1420 2110 460 BA-2 1530
600 800 1874 800 1258 2474 870 DZW250 1522 2410 460 BA-2 2140
700 900 - - - 3046 1170 DZW350 - 2600 460 BA-2 3275
800 1000 - - - 3250 1170 DZW500 - 2860 610 BAA-3 3924
900 1100 - - - 3509 1060 DZW800 - 3170 610 BAA-3 4435
1000 1200 - - - 3873 1060 DZW1000 - - - - -

Main size of outside & weight

Model: Z41H, Z41 Y, Z541H, Z541Y, Z941Y, Z941Y, GF1H *, GF1Y *, GWF1H *, GWF1Y *, GDF1H * ', GDF1Y *

Transmission mode Driving 手动 Hand operated 电动 Electric driving Gear Gear operated
PN(MPa) DN(mm) L HO DO Weight(kg) H1 D1 Electric device Electric driving Weight(kg) H2 D2 Gear device Weight(kg)
4.0 15 130 135 120 6 - - - - - - - -
20 150 190 140 8 - - - - - - - -
25 160 205 160 12 - - - - - - - -
32 180 270 180 15 - - - - - - - -
40 240 310 200 31 630 590 DZW10A 92 - - - -
50 250 371 280 34 670 590 DZW10A 95 - - - -
65 290 391 280 39 712 590 DZW15A 102 - - - -
80 310 455 320 52 775 590 DZW20A 115 - - - -
100 350 551 360 80 875 590 DZW20A 163 - - - -
125 400 628 400 127 948 590 DZW20A 190 - - - -
150 450 708 400 154 1030 590 DZW30A 219 - - - -
200 550 885 460 263 1325 590 DZW45A 373 - - - -
250 650 906 560 368 1400 810 DZW60A 480 - - - -
300 750 1203 640 547 1655 830 DZW90 686 1500 460 BA-1 630
350 850 1341 640 679 1795 830 DZW120 821 1960 460 BA-1 985
400 950 1492 720 953 2093 870 DZW180 1214 2170 460 BA-1 1430
500 1150 - - - 2645 870 DZW250 2150 2450 610 BA-2 2040
600 1350 - - - 2865 1170 DZW350 - 2940 610 BA-2 3050
700 1550 - - - 3450 1170 DZW500 - - - - -
800 1750 - - - 3920 1060 DZW800 - - - - -

Main size of outside & weight

Model: Z41H, Z41 Y, Z541H, Z541Y, Z941H, Z941 Y, GF1H *, GF1Y *, GWF1H *, GWF1Y *, GDF1H *, GDF1Y *

Transmission mode Driving 手动 Hand operated 电动 Electric driving Gear Gear operated
PN(MPa) DN(mm) L HO DO Weight(kg) H1 D1 Electric device Electric driving Weight(kg) H2 D2 Gear device Weight(kg)
6.4 15 170 140 100 7 - - - - - - - -
20 190 140 100 9 - - - - - - - -
25 210 215 180 12 - - - - - - - -
32 230 270 180 16 - - - - - - - -
40 240 345 200 32 665 590 DZW10A 93 - - - -
50 250 470 200 39 790 590 DZW15A 102 - - - -
65 290 520 250 43 840 590 DZW20A 106 - - - -
80 310 570 300 60 890 590 DZW20A 123 - - - -
100 350 700 300 89 1020 590 DZW30A 154 - - - -
125 400 780 350 140 1100 590 DZW30A 205 - - - -
150 450 850 350 207 1290 590 DZW45A 317 - - - -
200 550 1035 400 325 1475 810 DZW60A 437 1420 310 B & A 0 430
250 650 1050 560 467 1500 830 DZW90 606 1580 460 BA-1 530
300 750 1470 640 590 1820 830 DZW120 732 1770 460 BA-1 590
350 850 - - - 2216 870 DZW180 1110 2060 460 BA-1 840
400 950 - - - 2838 870 DZW250 1540 2270 460 BA-1 1410
500 1150 - - - 3320 1170 DZW350 - - - - -
600 1350 - - - 3684 1170 DZW500 - - - - -

Main size of outside & weight

Model: Z41H, Z41 Y, Z541H, Z541Y, Z941Y, Z941Y, GF1H *, GF1Y *, GWF1H *, GWF1Y *, GDF1H *, GDF1Y *

Transmission mode Driving 手动 Hand operated 电动 Electric driving Gear Gear operated
PN (MPa) DN (mm) L HO DO Weight (kg) H1 D1 Electric device Electric driving Weight (kg) H2 D2 Gear device Weight (kg)
10.0 40 240 360 320 50 680 590 DZW15A 113 - - - -
50 250 490 360 60 810 590 DZW20A 123 - - - -
65 290 540 400 70 860 590 DZW20A 133 - - - -
80 310 572 400 100 896 590 DZW30A 165 - - - -
100 350 573 400 110 1013 590 DZW45A 220 - - - -
125 400 744 560 180 1184 810 DZW60A 292 - - - -
150 450 800 560 250 1250 830 DZW90 389 - - - -
200 550 800 560 360 1250 830 DZW120 502 1490 310 B & A 0 730
250 650 1050 600 420 1650 870 DZW180 790 1720 460 BA-1 900
300 750 1200 640 530 1800 870 DZW250 910 1890 460 BA-1 1200
350 850 - - - 2030 1170 DZW350 1610 2180 610 BA-2 1700
400 950 - - - 2250 1170 DZW500 2512 2390 610 BA-2 2500
500 1150 - - - 2550 1060 DZW800 3200 - - - -

Main size of outside & weight

Model: Z41H, Z41 Y, Z541H, Z541Y, Z941H, Z941 Y, GF1H *, GF1Y *, GWF1H *, GWF1Y *, GDF1H *, GDF1Y *

Transmission mode Driving 手动 Hand operated 电动 Electric driving Gear Gear operated
PN(MPa) DN(mm) L HO DO Weight(kg) H1 D1 Electric device Electric driving Weight(kg) H2 D2 Gear device Weight(kg)
16.0 40 260 395 320 26 670 590 DZW15A 118 - - - -
50 300 612 360 73 832 590 DZW20A 136 - - - -
65 340 677 360 110 880 590 DZW30A 175 - - - -
80 390 686 400 141 905 590 DZW30A 206 - - - -
100 450 751 450 185 1071 590 DZW45A 295 - - - -
125 525 868 560 320 1163 810 DZW60A 432 - - - -
150 600 997 640 462 1170 830 DZW90 601 1250 460 BA-1 492
200 750 1224 720 711 1440 830 DZW120 853 1520 460 BA-1 780
250 850 - - - 1760 870 DZW180 1300 1540 610 BA-2 1140
300 950 - - - 2230 870 DZW250 1750 1620 610 BA-3 1720
25.0 50 350 350 360 69 813 590 DZW30A 129 - - - -
65 410 410 400 90 855 590 DZW30A 154 - - - -
80 470 470 400 133 1016 590 DZW45A 233 - - - -
100 550 550 560 246 1099 810 DZW60A 348 - - - -
125 650 650 560 480 1160 830 DZW90 610 - - - -
150 750 750 640 700 1240 830 DZW120 840 - - - -
200 832 832 720 1075 1520 870 DZW180 1225 - - - -
250 991 991 800 1980 1680 870 DZW250 2130 - - - -
 

China Cast Steel Gate Valve – Heavy-Duty Flow Control for Industrial Applications  

Ensure reliable shut-off and superior durability with our China cast steel gate valve, engineered for high-pressure pipelines, petrochemical plants, and power generation systems. Manufactured from ASTM A216 WCB/WCC cast steel, these industrial-grade valves deliver leak-proof performance, corrosion resistance, and long service life in demanding environments.  

 Key Features & Benefits  
✔ Robust Construction – Full-bore design minimizes pressure drop with ASME Class 150-900 ratings  
✔ Bidirectional Sealing – Stainless steel wedge + graphite packing ensures zero leakage (API 598 certified)  
✔ High-Temperature Capable – Operates from -29°C to 425°C with optional heat-resistant trims  
✔ Multiple Actuation Options – Handwheel, gearbox, or pneumatic/electrical actuation ready  
✔ Easy Maintenance – Bolted bonnet design allows quick internal inspection  

 Critical Applications  
- Oil & Gas Pipelines (crude, refined products, LNG)  
- Power Plants (steam, boiler feedwater systems)  
- Chemical Processing (acid, alkali media)  
- Shipbuilding & Offshore Platforms  

 Competitive Advantages  
✓ Custom Configurations – Available in OS&Y (Rising Stem) or NRS (Non-Rising) designs  
✓ Anti-Blowout Stem – Prevents stem ejection under high pressure  
✓ Full Compliance – Meets API 600, BS 1414, GOST 9544 standards  

The preferred choice for global engineers – where industrial reliability meets precision flow control!  

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+86-0592-6367928

E-mail: smkvalve@126.com

Address: 801-805 Jingshan Road, Guannan Industrial Zone, jimei district, Xiamen City

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