Cast Steel Globe Valve 150LBS - 300LBS - API, ANSI, BS 1873
Tengs Valve supplies high-quality Cast Steel Globe Valves for ANSI Class 150LBS and 300LBS, manufactured to BS 1873 and ANSI B16.34 standards. These globe valves feature OS&Y construction, bolted bonnet, rising stem, and plug disc design. Available in carbon steel, stainless steel, and alloy steel with flanged or butt weld ends. Sizes range from 2″ to 18″ (DN50 to DN450). Operated by handwheel or gear. Ideal for oil & gas, chemical, power generation, and water treatment applications requiring reliable flow regulation and shut-off.
Cast Steel Globe Valve Specifications for 150LBS - 300LBS
• Design & Manufacture: ANSI B16.34, BS 1873
• Construction: OS&Y, Bolted Bonnet (B.B.)
• Size Range: 2″ to 18″ (DN50 to DN450)
• Pressure Ratings: ANSI 150LB, 300LB
• 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, Gear Operated
• Sour Service: NACE MR 0175 on Request
✓ General-purpose low to medium pressure service — cost-effective, readily available, and widely stocked
Class 150 vs Class 300 Globe Valve: Key Differences
| Parameter | Class 150 | Class 300 |
|---|---|---|
| Pressure Rating | ~20 bar (290 psi) | ~50 bar (740 psi) |
| Wall Thickness | Standard | Thicker, reinforced |
| Flange Class | Class 150 | Class 300 |
| Face to Face | Shorter per ASME B16.10 | Longer per ASME B16.10 |
| Typical Application | Water treatment, HVAC, general low-pressure service | Refinery, chemical, power plant medium-pressure service |
Reference: ASME B16.34. Class 300 globe valves provide higher pressure containment and are suitable for more demanding service conditions than Class 150.
Cast Steel Globe Valve Main Parts and Materials
| Part Name | Material | ||||||
|---|---|---|---|---|---|---|---|
| A216-WCB Trim 1# |
A216-WCB Trim 8# |
A216-WCB Trim 5# |
A216-WCB Trim 10# |
A216-WCB Trim 12# |
A351-CF8(M) | A351-CF3(M) | |
| Body | A216-WCB | A216-WCB | A216-WCB | A216-WCB | A216-WCB | A351-CF8(M) | A351-CF3(M) |
| Bonnet | A216-WCB | A216-WCB | A216-WCB | A216-WCB | A216-WCB | A351-CF8(M) | A351-CF3(M) |
| Disc | WCB + 13Cr | WCB + 13Cr | WCB + STL | WCB + 316 | WCB + 316 | A351-CF8(M) | A351-CF3(M) |
| Seat | 13Cr | Stellite | Stellite | 316SS | Stellite | Integral | Integral |
| Stem | A182-F6a | A182-F6a | A182-F6a | A182-F316 | A182-F316 | A182-F304/316 | A182-F304L/316L |
| Bolts / Nuts | B7 / 2H | B7 / 2H | B7 / 2H | B7 / 2H | B7 / 2H | B8(M) / 8(M) | B8(M) / 8(M) |
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 150LBS - 300LBS
Reference: ANSI B16.34, BS 1873. Dimensions may vary by manufacturer. Contact us for confirmed drawing and quotation.
Typical Applications of 150LBS - 300LBS Cast Steel Globe Valve
• Water treatment and distribution: municipal water supply, distribution networks, and wastewater systems.
• HVAC systems: heating, ventilation, and air conditioning pipelines requiring flow regulation.
• Oil & gas low-pressure service: crude oil, natural gas, and refined product lines.
• Chemical processing: corrosive media handling with CF8 / CF8M options.
• Power plant auxiliary systems: cooling water, service water, and low-pressure steam lines.
• General industrial pipelines: non-corrosive and mildly corrosive media requiring reliable flow regulation.
FAQ - Cast Steel Globe Valve 150LBS - 300LBS
Q1: What is a Class 150LBS - 300LBS globe valve?
A: A Class 150LBS - 300LBS cast steel globe valve is a linear motion valve designed for throttling and flow regulation in low to medium pressure pipelines. It is manufactured to BS 1873 / ANSI B16.34 and is rated for ANSI Class 150 (approximately PN20) or Class 300 (approximately PN50) pressure. Class 150 is suitable for general low-pressure service, while Class 300 is suitable for medium-pressure refinery, chemical, and power plant service.
Q2: What is the difference between Class 150 and Class 300 globe valves?
A: Class 300 globe valves have thicker wall sections, heavier flanges, and higher pressure/temperature ratings than Class 150. Class 300 is suitable for medium-pressure refinery, chemical, and power plant service, while Class 150 is preferred for water treatment, HVAC, and general low-pressure industrial applications.
Q3: What is the difference between a globe valve and a gate valve?
A: A globe valve uses a plug that moves along the flow axis, providing better throttling and flow regulation — ideal for modulating service. A gate valve uses a wedge that moves perpendicular to the flow, providing full bore flow with minimal pressure drop — ideal for on-off isolation only. Globe valves should be used for throttling, while gate valves should only be used fully open or fully closed.
Q4: What materials are available for 150LBS - 300LBS globe valves?
A: Common body materials include WCB, LCB, CF8, CF8M, CF3, CF3M, 4A, 5A, WC6, WC9, C5, and C12. Various trim materials following API 600 numbering (Trim 1#, 5#, 8#, 10#, 12#) are available to suit different service conditions.
Q5: What end connections and actuation options are available?
A: End connections include flanged (RF) and butt weld (BW). Actuation options include manual handwheel and gear operated. 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 150LBS - 300LBS
Send us your size, pressure rating (150LBS or 300LBS), 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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