Industrial Gate Valves – Forged, Cast &Stainless Steel Solutions
SFAN Valve is a professional manufacturer of industrial gate valves for critical flow-control applications.Our forged steel, cast steel and stainless steel gate valves are widely used in oil & gas, chemical, power, and refinery industries. Each valve is precision-machined and pressure-tested to ensure tight shut-off and long-term reliability, even in high-temperature or corrosive environments.
Features & Benefits
| Design | Complies to API 602, ASME B16.34 for high pressure-temperature service. |
|---|---|
| Size Range | 1/4~4" (8mm~100mm) |
| Pressure Class | ASME Class 150, 300, 600, 900, 1500, 1680, 2500, 4500# |
| End Connection | Socket Weld (SW), Threaded (NPT/BSP), Butt weld(BW) and Flange( RF, FF, RTJ), or Mixed end |
| Flow Bore | Reduced bore or Full bore |
| Wall thickness | Complies to API 602, Corrosion Allowance more than 3mm |
| Body to bonnet | Bolted bonnet, Welded bonnet, Or Pressure Seal Bonnet [For welded bonnet valves, the bonnet is threaded in and torqued to an engineered torque value and the body bonnet joint is strength-welded, offering double protection against leakage. (body/bonnet threads and strength-weld).] |
| Body Material | Carbon steel(A105N, LF2, LF3), Stainless steel(F304(L), F316(L), F51, F53), Alloy steel(Inconel 625, 825, Hastelloy C-276) or other |
| Trim Material | As buyers' request or following list. |
| Wedge Material | Stellite (CoCr alloy) hardfaced ensures low friction and long service life. |
| Seat Material | Stellite (CoCr alloy) hardfaced ensures low friction and long service life. |
| Seat Type | Solid type, Renewable Expanded Seat, for Class 1500 valves and for steam service, seats are seal-welded to the body. |
| Packing | Flexible Graphite, Braided Graphite or PTFE. |
| Low fugitive emission | Complies to ISO 15848-1 or ISO 15848-2 |
| Valve test | Complies to API 598 |
| Valve guarantee | 18 months after shipments and 12 months after installed |
| Medium | Water, Steam, Oil, Gas, Oxygen, Hydrogen, Liquid Nitrogen, and other |
| Temperature | -196℃(cryogenic design) to 560℃ |
| Brand | SFAN VALVE OR "OEM" |
| Special Design | Bellows seal gate valves deliver zero stem leakage and are ideal for toxic or high-temperature service. |
Standards Design In Forged Steel Valves
- Designed and manufactured in accordance with API 602.
- End connections per the following standards:
a) Butt weld dimensions: ASME B16.25.
b) Socket weld dimensions: ASME B16.11.
c) Flange end dimensions: ASME B16.5 and ASME B16.47. - Face-to-face dimensions in accordance with ASME B16.10-2023.
- Testing and inspection performed per API 598.
- Materials conform to ANSI/ASTM standards.
Check more standard decsription: The Ultimate Guide to Industrial Valve Standards and Rigorous Testing.
Features & Benefits
| Design | Complies to API 600, API 603 for high pressure-temperature service. |
|---|---|
| Size Range | 2~48" (50mm~1200mm) |
| Pressure Class | ASME Class 150, 300, 600, 900, 1500, 1680, 2500# |
| End Connection | Butt weld(BW) and Flange( RF, FF, RTJ), or Mixed end |
| Flow Bore | Reduced bore or Full bore |
| Wall thickness | Complies to API 600, |
| Body to bonnet | Bolted bonnet, Or Pressure Seal Bonnet |
| Body Material | Carbon steel(WCB, LCB, LCC), Stainless steel(CF8M, CF3M), Alloy steel(CN7M, CW12MW, CW6MC, CY40, CR206) or other |
| Trim Material | As custom combinations or following list. |
| Wedge Material | Stellite (CoCr alloy) hardfaced ensures low friction and long service life. |
| Seat Material | Stellite (CoCr alloy) hardfaced ensures low friction and long service life. |
| Seat Type | Flexible Wedge, or Solid Wedge |
| Packing | Flexible Graphite |
| Low fugitive emission | Complies to API624, ISO 15848-1 or ISO 15848-2 |
| Valve test | Complies to API 598 |
| Valve guarantee | 18 months after shipments and 12 months after installed |
| Medium | Water, Steam, Oil, Gas, Oxygen, Hydrogen, Liquid Nitrogen, and other |
| Temperature | -196℃(cryogenic design) to 560℃ |
| Brand | SFAN VALVE OR "OEM" |
| Special Design | Bellows seal gate valves deliver zero stem leakage and are ideal for toxic or high-temperature service. |
Cast Steel Valves Flanged End 150lb 2 3 4 5 6 8 10 12 16 18 20 22 24 30 40 in inch os&y Large Diameter Gate Valve
Standards Design In Cast Steel Gate Valves
- Designed and manufactured in accordance with API 600, API 603, or ASME B16.34..
- End connections per the following standards:
a) Butt weld dimensions: ASME B16.25.
b) Flange end dimensions: ASME B16.5 and ASME B16.47. - Face-to-face dimensions in accordance with ASME B16.10-2023.
- Testing and inspection performed per API 598.
- Materials conform to ANSI/ASTM standards.
Check more standard decsription: The Ultimate Guide to Industrial Valve Standards and Rigorous Testing.
Industrial Gate Valves – Forged, Cast & Stainless Steel Solutions
SFAN Valve is a professional manufacturer of industrial gate valves for critical flow-control applications. Our forged steel and stainless steel gate valves are widely used in oil & gas, chemical, power, and refinery industries. Each valve is precision-machined and pressure-tested to ensure tight shut-off and long-term reliability, even in high-temperature or corrosive environments.
Manufactured in accordance with API 600, API602, ASME B16.34, and ISO 5211 provide superior durability and corrosion resistance for demanding industries such as oil & gas, chemical processing, power generation, and water treatment.
We offer A105/WCB carbon steel , F316/F316L/CF8M stainless steel and inconel 625/825 alloy steel and so on gate valves with a variety of end connections — socket weld, threaded (NPT/BSP), butt weld, and flanged ends. Special designs such as bellows seal gate valves deliver zero stem leakage and are ideal for toxic or high-temperature service. Extended body gate valve is integral forged to reduce the cost, and it construction provides superior strength for high-pressure and high-temperature services.
Gate Valve Types
Forged Steel Gate Valves
Designed according to API 602 and ASME B16.34. A105 / LF2 materials with socket weld, threaded, or butt weld ends. Pressure classes from 150 LB to 4500 LB.
View Details →Stainless Steel Gate Valves
F304 / F316 / F316L stainless steel construction for corrosion resistance. Suitable for chemical, marine, and high-temperature service.
View Details →Cast Steel Gate Valves
Designed according to API 602 and ASME B16.34. WCB/CF8M/ALLOY STEEL materials with flange ends, or butt weld ends. Pressure classes from 150 LB to 2500 LB.
View Details →Bellows Seal Gate Valves
Zero stem leakage design with multi-layer stainless steel bellows. Ideal for steam, vacuum, or hazardous chemical applications.
View Details →End Connection Options
- Socket Weld (SW): Compact and durable for high-pressure pipelines.
- Threaded (NPT/BSP): Easy installation and maintenance.
- Butt Weld & Flanged: Available upon request for custom applications.
Why Choose SFAN Valve
- Over 15 years of experience in forged steel valve manufacturing 100% pressure-tested before delivery
- ISO 9001 & CE certified
- OEM customization and quick delivery
- Exported to Europe, Middle East, and Southeast Asia
FAQs About Gate Valves
What materials are used in SFAN gate valves?
We offer forged carbon steel (A105, A350 LF2) and stainless steel (F304, F316, F316L) for different industrial environments.
What is the advantage of a bellows seal gate valve?
The bellows seal prevents stem leakage using a welded metal bellows—ideal for high-temperature or toxic media service.
Are socket weld and threaded ends available?
Yes. SFAN provides socket weld, threaded (NPT/BSP), butt weld, and flanged end connections to meet your installation requirements.
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Manuals-Cast-Steel-Gate-Globe-Check-Valves-IOM-Sfanvalve-en
Why Choose SFAN VALVE
- Over 15 years of experience in forged steel valve manufacturing
- 100% pressure-tested before delivery according to API 598
- ISO 9001 certified
- OEM customization and quick delivery
- Exported to Europe, Middle East, and Southeast Asia
FAQ
What Is Gate Valve?
Industrial gate valves are the most widely used isolation valves in fluid control systems. Their core function is to achieve full opening or closing of pipeline media through the vertical movement of a gate along the flow axis. From the perspective of an SFAN engineer with 15 years of industry experience, a gate valve is not merely a mechanical component, but a complex integration of pressure boundaries, materials science, and sealing logic.
More details in “What Is Gate Valves? Industrial Gate Valve Technical Compendium”
Forged Steel VS Cast Steel
Forged steel gate valves are manufactured by shaping solid metal billets under high pressure and heat. This process aligns the grain structure, eliminates internal voids, and results in superior mechanical strength, impact resistance, and fatigue endurance. In contrast, cast steel gate valves are formed by pouring molten metal into molds—a method that can introduce porosity, inclusions, or micro-cracks if not tightly controlled.
SFAN Valve’s forged steel gate valves—available in sizes from 1/4″ to 4″ (DN10–DN100)—are engineered with solid wedge designs and OS&Y (Outside Screw and Yoke) stems for reliable shutoff and visual position indication.
While cast steel gate valves are cost-effective for large-diameter, —available in sizes from 2″ to 48″ (DN50–DN1200)-are engineered with Flexible or Solid wedge designs and OS&Y (Outside Screw and Yoke) stems for reliable shutoff and visual position indication.
More details in “Forged Steel Gate Valve vs Cast Steel Gate Valve: A Selection Guide for High-Pressure Applications“.
Gate Valve VS Globe Valve
If you’re deciding between a gate valve and a globe valve, you’re usually balancing three things: shutoff reliability, flow control needs, and system pressure loss.
A simple rule of thumb:
- Choose a gate valve when you need full open / full close isolation with minimal pressure drop.
- Choose a globe valve when you need repeatable throttling (flow regulation) and you can accept higher pressure drop.
Below is a criteria-by-criteria comparison aimed at procurement managers and plant/project engineers, with the practical caveats that tend to drive lifecycle cost.
More details in “Gate Valve vs. Globe Valve: How to Choose the Right One“.
Gate Valve VS Ball Valve
The fundamental difference between gate and ball valves originates in their internal mechanisms for flow obstruction. A gate valve operates as a linear-motion device, where a flat or wedge-shaped closure element—the “gate”—moves perpendicular to the flow path. This design is often likened to a sliding door or a guillotine, where the gate is lifted or lowered by a threaded stem to clear or block the passage. In contrast, a ball valve utilizes a rotary-motion mechanism, employing a spherical disc with a bored center that rotates 90 degrees to align with or perpendicular to the pipeline.
More details in “Gate Valve vs. Ball Valve Technologies in Industrial Fluid Control Systems “.
