Cast Steel Globe Valve 1500LBS - 2500LBS - PSB, API, BS 1873
Tengs Valve supplies high-quality Cast Steel Globe Valves for ANSI Class 1500LB and 2500LB, manufactured to BS 1873 and ANSI B16.34 standards. These globe valves feature pressure seal bonnet (PSB) design, OS&Y construction, rising stem, and metal seated plug disc. Available in carbon steel and stainless steel with flanged or butt weld ends. Sizes range from 2″ to 12″ (DN50 to DN300). Operated by handwheel or gearbox. Ideal for high-pressure oil & gas, chemical, and power generation applications requiring reliable flow regulation and shut-off.
Specifications for Cast Steel Straight Globe Valve 1500LBS - 2500LBS
• Design & Manufacture: ANSI B16.34, BS 1873
• Construction: OS&Y, Bolted Bonnet, Pressure Sealing Bonnet (PSB)
• Size Range: 2″ to 12″ (DN50 to DN300)
• Pressure Ratings: ANSI 1500LB, 2500LB
• End Connections: Flanged, Butt Weld (BW)
• Body Materials: WCB, LCB, CF8, CF8M, CF3, CF3M, WC6, WC9, C5, C12, Duplex Stainless Steel or Equivalent
• Trim Materials: Various trim materials available to suit service conditions
• Actuator: Handwheel, Gearbox
• Sour Service: NACE MR 0175 on Request
✓ Ultra-high-pressure service — pressure seal bonnet (PSB) is standard for Class 1500 and 2500 critical applications
Class 1500 vs Class 2500 Globe Valve: Key Differences
| Parameter | Class 1500 | Class 2500 |
|---|---|---|
| Pressure Rating | ~250 bar (3625 psi) | ~420 bar (6090 psi) |
| Size Range | 2″ to 12″ (DN50–DN300) | 2″ to 8″ (DN50–DN200) |
| Bonnet Type | Pressure Seal Bonnet (PSB) | Pressure Seal Bonnet (PSB) |
| Flange Face | RTJ (standard) | RTJ (mandatory) |
| Typical Application | Main steam, hydrocracking, wellhead service | Ultra-high-pressure wellhead, subsea, H₂S sour service |
Reference: ASME B16.34. Class 2500 is generally limited to smaller sizes (typically up to DN200) due to extreme wall thickness and bolting requirements.
Cast Steel Globe Valve Main Parts and Materials
| Part Name | Material | |||
|---|---|---|---|---|
| Carbon Steel (WCB) | Stainless Steel (CF8 / CF8M) | Alloy Steel (WC6 / WC9) | Duplex (4A / 5A) | |
| Body | A216 WCB | A351 CF8 / CF8M | A217 WC6 / WC9 | A890 4A / 5A |
| Bonnet | A216 WCB | A351 CF8 / CF8M | A217 WC6 / WC9 | A890 4A / 5A |
| Disc | WCB + 13Cr / STL | CF8 / CF8M | WC6 / WC9 + 13Cr / STL | 4A / 5A + STL |
| Seat | 13Cr / STL | SS304 / SS316 | 13Cr / STL | STL |
| Stem | A182 F6a / F304 / F316 | A182 F304 / F316 | A182 F6a / F304 / F316 | A182 F51 / F53 |
| Bolts / Nuts | A193 B7 / A194 2H | A193 B8 / A194 8, B8M / 8M | A193 B7 / A194 2H | A193 B8M / A194 8M |
| Packing | Graphite | Graphite | Graphite | Graphite |
Reference: ANSI B16.34, BS 1873. Materials may vary by model and pressure rating. Contact us for confirmed material certificate.
Cast Steel Globe Valve Dimensions for 1500LBS - 2500LBS
Reference: ANSI B16.34, BS 1873. Dimensions may vary by manufacturer. Contact us for confirmed drawing and quotation.
Typical Applications of 1500LBS - 2500LBS Cast Steel Globe Valve
• Ultra-high-pressure steam systems: power plant main steam, reheat, and turbine bypass lines at Class 1500 / 2500.
• Refinery high-pressure processes: hydrocracking, hydrotreating, and catalytic reforming lines.
• Oil & gas wellhead and subsea: high-pressure wellhead, manifold, and subsea pipelines.
• Chemical and petrochemical: high-pressure synthesis, ammonia, and urea plants with CF8M / alloy options.
• Power generation: boiler feedwater, turbine bypass, and high-energy piping systems requiring flow regulation.
• Sour service: available with NACE MR 0175 compliance for H₂S-containing media.
FAQ - Cast Steel Globe Valve 1500LBS - 2500LBS
Q1: What is a Class 1500LBS - 2500LBS globe valve?
A: A Class 1500LBS - 2500LBS cast steel globe valve is a linear motion valve designed for throttling and flow regulation in ultra-high-pressure pipelines. It is manufactured to BS 1873 / ANSI B16.34 and is rated for ANSI Class 1500 (approximately PN250) or Class 2500 (approximately PN420) pressure. It is typically supplied with pressure seal bonnet (PSB) and RTJ flange facing for critical service.
Q2: What is the difference between Class 1500 and Class 2500 globe valves?
A: Class 2500 globe valves have thicker wall sections, heavier flanges, and higher pressure/temperature ratings than Class 1500. Class 2500 is typically limited to smaller sizes (up to DN200) due to extreme wall thickness. Both use pressure seal bonnet construction, but Class 2500 mandates RTJ flange facing for sealing integrity. Class 2500 is preferred for ultra-high-pressure wellhead, subsea, and H₂S sour 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 1500 and above in critical service.
Q4: What materials are available for 1500LBS - 2500LBS globe 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, F6a, F51, and F53 are available to suit different service conditions.
Q5: What end connections and actuation options are available?
A: End connections include flanged (RTJ) and butt weld (BW). Actuation options include manual handwheel and gearbox. Other options are available on request.
Q6: What is BS 1873 standard?
A: BS 1873 is a British Standard for "Specification for steel globe and globe stop and check valves (flanged and butt-welding ends) for the petroleum, petrochemical, and allied industries." It specifies requirements for cast or forged carbon and alloy steel outside screw and yoke globe valves, straight pattern, angle pattern, and Y pattern, in sizes DN15 to DN400 (½″ to 16″) and Classes 150 to 2500.
Get a Fast Quote for Cast Steel Globe Valve 1500LBS - 2500LBS
Send us your size, pressure rating (1500LBS or 2500LBS), material, end connection, actuation type, and quantity. Our team will reply within 24 hours with price, drawing, and delivery time.
Email: sales@tengsvalve.com
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