High Pressure Cast Steel Gate Valve - Class 1500LB & 2500LB - API 600, 2" to 24"
We supply Class 1500LB and 2500LB High Pressure Cast Steel Gate Valve as a professional manufacturer and supplier, engineered for extreme pressure and critical service conditions. Manufactured in accordance with API 600 and API 6D, this cast steel gate valve features pressure seal bonnet (PSB) or bolted bonnet construction, rising stem OS&Y, and flexible wedge design. Available in sizes 2″ to 24″ (Class 1500) and 2″ to 12″ (Class 2500). End connections include flanged (RF, RTJ) and butt weld (BW) — RTJ facing is recommended for enhanced sealing integrity in ultra-high-pressure services. Special designs such as NACE MR 0175 / ISO 15156 and bypass valve are available. 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, electric actuator, or bare stem.
High Pressure Cast Steel Gate Valve Specifications
• Design & Manufacture: ANSI B16.34, API 600, API 6D
• Construction: OS&Y, Pressure Seal Bonnet (PSB) or Bolted Bonnet, Solid or Flexible Wedge Design
• Size Range: 2″ to 24″ (Class 1500Lb) / 2″ to 12″ (Class 2500Lb)
• Pressure Rating: ANSI Class 1500Lbs (CL1500) / ANSI Class 2500Lbs (CL2500)
• End Connections: Flanged (RF, RTJ), Butt Weld (BW) — RTJ facing recommended for ultra-high-pressure sealing integrity
• Body Materials: WCB, LCB, CF8, CF8M, CF3, CF3M, 4A, 5A, WC6, WC9, C5, C12 or Equivalent
• Trim Materials: Various trim materials are available to suit different service conditions, such as Full Stellite, etc.
• Actuator Type: Manual Handwheel, Bevel Gear, Electric Actuator, Bare Stem
• Special Design: NACE MR 0175 / ISO 15156, Bypass Valve Design
✓ Engineered for extreme pressure — pressure seal bonnet, RTJ options, NACE compliance, and bypass valve availability
Gate Valve 1500LBS & 2500LBS 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 - Class 1500LB & 2500LB
| Class 1500LB | ||||
|---|---|---|---|---|
| NPS (inch) | DN (mm) | L (RF) mm | L (BW) mm | L (RTJ) mm |
| 2 | 50 | 368 | 368 | 371 |
| 3 | 80 | 470 | 470 | 473 |
| 4 | 100 | 546 | 546 | 550 |
| 6 | 150 | 705 | 705 | 711 |
| 8 | 200 | 832 | 832 | 841 |
| 10 | 250 | 991 | 991 | 1000 |
| 12 | 300 | 1130 | 1130 | 1146 |
| 14 | 350 | 1257 | 1257 | 1276 |
| 16 | 400 | 1384 | 1384 | 1407 |
| 18 | 450 | 1537 | 1537 | 1559 |
| 20 | 500 | 1664 | 1664 | 1686 |
| 24 | 600 | 1943 | 1943 | 1972 |
| Class 2500LB | ||||
|---|---|---|---|---|
| NPS (inch) | DN (mm) | L (RF) mm | L (BW) mm | L (RTJ) mm |
| 2 | 50 | 451 | 451 | 454 |
| 3 | 80 | 578 | 578 | 584 |
| 4 | 100 | 673 | 673 | 683 |
| 6 | 150 | 914 | 914 | 927 |
| 8 | 200 | 1022 | 1022 | 1038 |
| 10 | 250 | 1270 | 1270 | 1292 |
| 12 | 300 | 1422 | 1422 | 1445 |
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 1500LB & 2500LB Dimensions.
Industrial Gate Valve Dimension Details
Typical Applications of Class 1500LB & 2500LB Cast Steel Gate Valve
• Ultra-high-pressure steam systems: power plant main steam, reheat, and turbine bypass lines at 1500–2500 class.
• Refinery high-pressure processes: hydrocracking, hydrotreating, and catalytic reforming at extreme pressure.
• Oil & gas wellhead and subsea: high-pressure wellhead, manifold, and subsea pipelines.
• Chemical plants: high-pressure synthesis, ammonia, and urea plants with CF8M / alloy options.
• Power generation: boiler feedwater, turbine bypass, and high-energy piping systems.
• Critical service with pressure seal bonnet: enhanced sealing integrity for extreme pressure and temperature applications.
FAQ - High Pressure Cast Steel Gate Valve Class 1500LB & 2500LB
Q1: What is a Class 1500LB / 2500LB cast steel gate valve?
A: A Class 1500LB / 2500LB cast steel gate valve is a linear motion valve designed for extreme 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 1500 (approximately PN250) and Class 2500 (approximately PN420) pressure.
Q2: What is the difference between 1500LB and 2500LB gate valves?
A: Class 2500LB gate valves have thicker wall sections, heavier flanges, and higher pressure/temperature ratings than Class 1500LB. Class 1500LB is available in sizes 2″ to 24″, while Class 2500LB is typically available in 2″ to 12″. Both use pressure seal bonnet construction for extreme pressure service.
Q3: What is a pressure seal bonnet (PSB)?
A: Pressure seal bonnet uses internal line pressure to tighten the seal between the bonnet and body. As pressure increases, the sealing force increases, making it more reliable than bolted bonnet at very high pressure and temperature. PSB is the standard choice for Class 1500LB and above in critical service.
Q4: What materials are available?
A: Common body materials include WCB, LCB, CF8, CF8M, CF3, CF3M, WC6, WC9, C5, C12, 4A, and 5A. Trim materials include 13Cr, full Stellite, SS304, SS316, and F6a. NACE MR 0175 / ISO 15156 is available for sour service.
Q5: What actuation options and special designs are available?
A: Actuation options include manual handwheel, bevel gear, electric actuator, and bare stem. Special designs include NACE MR 0175 / ISO 15156 compliance and bypass valve design. Other options are available on request.
Q6: What is the difference between RF and RTJ flange facing?
A: RF (Raised Face) is a standard flange facing suitable for general service. RTJ (Ring Type Joint) uses a metal ring gasket in a grooved flange facing, providing superior sealing integrity for ultra-high-pressure and high-temperature service. RTJ is recommended for Class 1500LB and above.
Get a Fast Quote for Class 1500LB & 2500LB Cast Steel Gate Valve
Send us your size, pressure rating (1500LB or 2500LB), material, end connection, actuation type, and quantity. Our team will reply within 24 hours with price, drawing, and delivery time.
Email: sales@tengsvalve.com
Website: Request a Quote Online
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