Cast Steel Gate Valve - ANSI Class 600Lb - API 600, 2" to 36"
We supply ANSI Class 600Lb Cast Steel Gate Valve as a professional manufacturer and supplier, engineered for high-pressure and high-temperature service conditions where standard Class 150 and 300 designs are inadequate. Manufactured in accordance with API 600 and API 6D, this cast steel gate valve features rising stem OS&Y, bolted bonnet construction, and flexible or solid wedge design with significantly enhanced wall thickness for superior pressure containment at elevated temperatures. Available in sizes 2″ to 36″ (DN50 to DN900) with pressure rating ANSI Class 600Lbs (CL600) — the preferred choice for high-pressure steam systems, refinery processes, chemical plants, power generation, and critical oil & gas applications where safety and reliability are paramount. End connections include flanged (RF, RTJ) and butt weld (BW) — RTJ flange facing is recommended for enhanced sealing integrity in high-pressure services. Materials include carbon steel (WCB, LCB), stainless steel (CF8, CF8M, CF3, CF3M), alloy steel (WC6, WC9, C5, C12), and duplex stainless steel (4A, 5A). Actuation options include manual handwheel, bevel gear operated (recommended for 6″ and above), and bare stem for electric actuator.
Cast Steel Gate Valve Specification for Class 600Lb
• Design & Manufacture: ANSI B16.34, API 600, API 6D
• Construction: Outside Screw and Yoke (OS&Y), Bolted Bonnet, Solid or Flexible Wedge Design — heavy-duty construction with significantly thicker wall sections for high-pressure service
• Size Range: 2″ to 36″ (DN50 to DN900)
• Pressure Rating: ANSI Class 600Lbs (CL600) — designed for high-pressure and high-temperature critical service
• End Connections: Flanged (RF, RTJ), Butt Weld (BW) — RTJ facing recommended for high-pressure sealing integrity
• Body Materials: WCB, LCB, CF8, CF8M, CF3, CF3M, WC6, WC9, C5, C12, 4A, 5A or Equivalent
• Trim Materials: Various trim materials are available to suit different service conditions
• Actuator Type: Manual Handwheel, Bevel Gear Operated (recommended for 6″ and above), Electric Actuator (Bare Stem)
• Sour Service: NACE MR 0175 on Request
✓ Designed for high-pressure critical applications — enhanced safety factor, RTJ options, and pressure integrity
Gate Valve 600LBS Main Parts and Materials
| Part Name | Material | ||
|---|---|---|---|
| Carbon Steel (WCB) | Stainless Steel (CF8 / CF8M) | Alloy Steel (WC6 / WC9) | |
| Body | A216 WCB | A351 CF8 / CF8M | A217 WC6 / WC9 |
| Bonnet | A216 WCB | A351 CF8 / CF8M | A217 WC6 / WC9 |
| Wedge / Disc | WCB + 13Cr / STL | CF8 / CF8M | WC6 / WC9 + 13Cr / STL |
| Seat | 13Cr / STL | SS304 / SS316 | 13Cr / STL |
| Stem | A182 F6a / F304 / F316 | A182 F304 / F316 | A182 F6a / F304 / F316 |
| Bolts / Nuts | A193 B7 / A194 2H | A193 B8 / A194 8, B8M / 8M | A193 B7 / A194 2H |
| Gasket | Graphite / PTFE | Graphite / PTFE | Graphite / PTFE |
| Packing | Graphite / PTFE | Graphite / PTFE | Graphite / PTFE |
Reference: API 600, API 6D, ANSI B16.34. Materials may vary by model and pressure rating. Contact us for confirmed material certificate.
Cast Steel Gate Valve Dimensions - ANSI Class 600Lb
| NPS (inch) | DN (mm) | L (RF) mm | L1 (BW) mm |
|---|---|---|---|
| 2 | 50 | 292 | 292 |
| 2 1/2 | 65 | 330 | 330 |
| 3 | 80 | 356 | 356 |
| 4 | 100 | 432 | 432 |
| 6 | 150 | 559 | 559 |
| 8 | 200 | 660 | 660 |
| 10 | 250 | 787 | 787 |
| 12 | 300 | 838 | 838 |
| 14 | 350 | 889 | 889 |
| 16 | 400 | 991 | 991 |
| 18 | 450 | 1092 | 1092 |
| 20 | 500 | 1194 | 1194 |
| 24 | 600 | 1397 | 1397 |
| 28 | 700 | 1549 | 1549 |
| 30 | 750 | 1651 | 1651 |
| 32 | 800 | 1778 | 1778 |
| 34 | 850 | 1930 | 1930 |
| 36 | 900 | 2083 | 2083 |
Reference: API 600, API 6D, ANSI B16.10. Dimensions may vary by manufacturer. Contact us for confirmed drawing and quotation.
Reference Drawing: Cast Steel Gate Valve Class 600Lb Dimensions.
Industrial Gate Valve Dimension Details
Typical Applications of 600Lb Cast Steel Gate Valve
• High-pressure steam systems: power plant main steam, reheat, and high-pressure auxiliary lines.
• Refinery and petrochemical: hydrocracking, hydrotreating, and high-pressure process lines.
• Chemical plants: high-pressure chemical synthesis and corrosive media with CF8M options.
• Oil & gas transmission: high-pressure gathering, transmission, and wellhead pipelines.
• Power generation: boiler feedwater, turbine bypass, and high-pressure drain systems.
• Critical service with RTJ facing: enhanced sealing integrity for high-pressure and high-temperature applications.
FAQ - Cast Steel Gate Valve ANSI Class 600Lb
Q1: What is a Class 600Lb cast steel gate valve?
A: A Class 600Lb cast steel gate valve is a linear motion valve designed for high-pressure and high-temperature on-off service. It uses a wedge-shaped disc that slides up and down to open or close the flow path. It is manufactured to API 600 / API 6D / ANSI B16.34 and is rated for ANSI Class 600 (approximately PN100) pressure.
Q2: What is the difference between Class 300 and Class 600 gate valves?
A: Class 600 gate valves have thicker wall sections, heavier flanges, and higher pressure/temperature ratings than Class 300. They are suitable for high-pressure steam, hydrocracking, hydrotreating, and other critical high-pressure services. Class 300 is preferred for medium-high pressure general industrial applications.
Q3: What is the difference between RF and RTJ flange facing?
A: RF (Raised Face) is a standard flange facing suitable for general service up to Class 600. RTJ (Ring Type Joint) uses a metal ring gasket in a grooved flange facing, providing superior sealing integrity for high-pressure and high-temperature service. RTJ is recommended for Class 600 and above in critical applications.
Q4: What materials are available for 600Lb gate valves?
A: Common body materials include WCB, LCB, CF8, CF8M, CF3, CF3M, WC6, WC9, C5, C12, 4A, and 5A. Various trim materials such as 13Cr, STL, SS304, SS316, and F6a are available to suit different service conditions.
Q5: What actuation options are available?
A: Actuation options include manual handwheel, bevel gear operated (recommended for 6″ and above), and bare stem for electric actuator. Other options are available on request.
Q6: Is NACE MR 0175 available for 600Lb gate valves?
A: Yes. NACE MR 0175 compliance is available on request for sour service applications. Please specify this requirement when requesting a quotation.
Get a Fast Quote for 600Lb Cast Steel Gate Valve
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Email: sales@tengsvalve.com
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