Cast Steel Globe Valve 600LBS - 900LBS - API, ANSI, BS 1873
Tengs Valve supplies high-quality Cast Steel Globe Valves for ANSI Class 600LBS and 900LBS, manufactured to BS 1873 and ANSI B16.34 standards. These globe valves feature OS&Y construction, bolted bonnet or pressure seal bonnet, rising stem, and plug disc design. Available in carbon steel, stainless steel, alloy steel, and duplex steel with flanged or butt weld ends. Sizes range from 2″ to 12″ (DN50 to DN300). Operated by handwheel or gearbox. Ideal for oil & gas, chemical, power generation, and water treatment applications requiring reliable flow regulation and shut-off.
Cast Steel Globe Valve Specifications for 600LBS - 900LBS
• Design & Manufacture: ANSI B16.34, BS 1873
• Construction: OS&Y, Bolted Bonnet, Pressure Seal Bonnet
• Size Range: 2″ to 12″ (DN50 to DN300)
• Pressure Ratings: ANSI 600LB, 900LB
• End Connections: Flanged, Butt Weld (BW)
• Body Materials: WCB, LCB, CF8, CF8M, CF3, CF3M, 4A, 5A, WC6, WC9, C5, C12 or Equivalent
• Trim Materials: Various trim materials available to suit service conditions
• Actuator: Handwheel, Gearbox
• Sour Service: NACE MR 0175 on Request
✓ High-pressure service — pressure seal bonnet and RTJ facing available for Class 900 critical applications
Class 600 vs Class 900 Globe Valve: Key Differences
| Parameter | Class 600 | Class 900 |
|---|---|---|
| Pressure Rating | ~100 bar (1480 psi) | ~150 bar (2220 psi) |
| Wall Thickness | Heavier than Class 300 | Maximum wall thickness |
| Bonnet Type | Bolted Bonnet or PSB | Pressure Seal Bonnet (PSB) |
| Flange Face | RF, RTJ | RTJ recommended |
| Typical Application | Refinery, chemical, power plant high-pressure service | Ultra-high-pressure steam, wellhead, hydrocracking service |
Reference: ASME B16.34. Class 900 globe valves provide higher pressure containment and are recommended with pressure seal bonnet and RTJ facing for critical service.
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 600LBS - 900LBS
Reference: ANSI B16.34, BS 1873. Dimensions may vary by manufacturer. Contact us for confirmed drawing and quotation.
Typical Applications of 600LBS - 900LBS Cast Steel Globe Valve
• High-pressure steam systems: power plant main steam, reheat, and turbine bypass lines.
• Refinery high-pressure processes: hydrocracking, hydrotreating, and catalytic reforming lines.
• Oil & gas wellhead and manifold: high-pressure gathering, transmission, and wellhead pipelines.
• Chemical and petrochemical: high-pressure synthesis and corrosive media with CF8M / alloy options.
• Power generation: boiler feedwater and high-energy piping systems requiring flow regulation.
• Duplex stainless service: offshore and marine applications with chloride stress corrosion cracking concerns.
FAQ - Cast Steel Globe Valve 600LBS - 900LBS
Q1: What is a Class 600LBS - 900LBS globe valve?
A: A Class 600LBS - 900LBS cast steel globe valve is a linear motion valve designed for throttling and flow regulation in high-pressure pipelines. It is manufactured to BS 1873 / ANSI B16.34 and is rated for ANSI Class 600 (approximately PN100) or Class 900 (approximately PN150) pressure. It is suitable for high-pressure steam, refinery, chemical, and power plant services.
Q2: What is the difference between Class 600 and Class 900 globe valves?
A: Class 900 globe valves have thicker wall sections, heavier flanges, and higher pressure/temperature ratings than Class 600. Class 900 is typically supplied with pressure seal bonnet (PSB) and RTJ facing for ultra-high-pressure service. Class 600 offers a balance of high-pressure capability and cost efficiency for refinery and power plant applications.
Q3: What is the difference between bolted bonnet and pressure seal bonnet?
A: Bolted bonnet is suitable for general service up to Class 900 and is easy to maintain. Pressure seal bonnet (PSB) uses internal line pressure to tighten the seal, making it more suitable for very high pressure and high temperature applications (Class 900 and above). Both options are available depending on the pressure class and service conditions.
Q4: What materials are available for 600LBS - 900LBS globe valves?
A: Common body materials include WCB, LCB, CF8, CF8M, CF3, CF3M, 4A, 5A, WC6, WC9, C5, and C12. 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 (RF, 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 600LBS - 900LBS
Send us your size, pressure rating (600LBS or 900LBS), 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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