Cast Steel Globe Valve - API 600, BS 1873, 2" to 18"
Tengs Valve supplies high-quality Cast Steel Globe Valves in ANSI and DIN standards, featuring bolted cover, pressure sealed bonnet, and rising stem design. Available in cast carbon steel, stainless steel, and alloy steel with plug disc or parabolic disc. End connections include flanged or butt weld (BW). Sizes range from 2″ to 18″ (DN50 to DN450), with pressure ratings from ANSI 150Lbs to 1500Lbs. Operated by handwheel, worm gear, or electric actuator. Ideal for oil & gas, chemical, power generation, and water treatment applications requiring reliable flow regulation and shut-off.
Cast Steel Globe Valve Specifications
• Design & Manufacture: ANSI B16.34, BS 1873
• Construction: OS&Y, Bolted Bonnet, Pressure Seal Bonnet
• Size Range: 2″ to 18″ (DN50 to DN450)
• Pressure Ratings: ANSI 150Lbs, 300Lbs, 600Lbs, 900Lbs, 1500Lbs
• 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: Manual, Gearbox, Electric Actuator
• Sour Service: NACE MR 0175 on Request
✓ BS 1873 covers cast and forged carbon, alloy, and stainless steel OS&Y globe valves, sizes DN15 to DN400 (½″ to 16″), Classes 150 to 2500
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, API 598. Materials may vary by model and pressure rating. Contact us for confirmed material certificate.
API Trim Number Selection Guide for Cast Steel Globe Valves
| Trim No. | Seat Material | Disc Material | Stem Material | Typical Application |
|---|---|---|---|---|
| Trim 1# | 13Cr | 13Cr | A182 F6a | General oil, gas, and water service up to 425°C |
| Trim 5# | Stellite | Stellite | A182 F6a | High-temperature steam and erosion service |
| Trim 8# | Stellite | 13Cr | A182 F6a | General sour service and moderate erosion |
| Trim 10# | 316SS | 316SS | A182 F316 | Corrosive chemical and petrochemical service |
| Trim 12# | Stellite | 316SS | A182 F316 | Corrosive + erosion service, sour gas with H₂S |
Reference: API 600 Table 1. Trim numbers specify the material combination for stem, seat, and disc. Select trim based on media, temperature, and erosion/corrosion conditions.
Typical Applications of Cast Steel Globe Valve
• Oil & gas transmission: crude oil, natural gas, and refined product pipelines requiring flow regulation and reliable shut-off.
• Refinery and petrochemical: process lines where precise throttling and frequent operation are required.
• Power generation: main steam, feedwater, and auxiliary systems at all pressure classes from 150LBS to 1500LBS.
• Chemical processing: corrosive media handling with CF8 / CF8M / alloy steel options.
• Water treatment: pump discharge, bypass, and flow control in water and wastewater systems.
• General industrial pipelines: non-corrosive and mildly corrosive media where flow regulation is needed.
FAQ - Cast Steel Globe Valve
Q1: What is a cast steel globe valve?
A: A cast steel globe valve is a linear motion valve designed for throttling and flow regulation in pipelines. It uses a movable plug or disc that moves along the flow axis to control flow rate. The name "globe" comes from the spherical body shape. It is manufactured to BS 1873 / ANSI B16.34 and is available in pressure classes from ANSI 150Lbs to 1500Lbs.
Q2: 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.
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 are the common trim materials for cast steel globe valves?
A: Common trim materials follow API 600 numbering: Trim 1 (13Cr / 410 SS) for standard non-corrosive service; Trim 5 (Stellite hard-faced) for high-temperature steam and erosion; Trim 8 (13Cr + Stellite) for general sour service; Trim 10 (316SS with Stellite seat) for corrosion and erosion combination; and Trim 12 (13Cr + Stellite, NACE MR0175 compliant) for sour gas service containing H₂S.
Q5: 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.
Q6: What end connections and actuation options are available?
A: End connections include flanged (RF, RTJ) and butt weld (BW). Actuation options include manual handwheel, bevel gear, and bare stem for electric actuator. Other options are available on request.
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Cast Steel Globe Valve Dimension Details
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