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API 623 Flanged Globe Valve
API 623 STANDARD · CLASS 150–2500 · THROTTLING & SHUTOFF
The API 623 Flanged Globe Valve is a heavy-duty flow control
and isolation valve manufactured to API 623 standards for
demanding oil, gas, and refinery pipeline applications. Rated
from Class 150 to Class 2500 per ASME B16.34, it provides
precise throttling and reliable shutoff for steam, crude oil,
natural gas, and process chemical service, with full compliance
to API 598 pressure testing requirements.
| API 623 | |
|---|---|
| Pressure Class | Class 150 / 300 / 600 / 900 / 1500 / 2500 |
| Size Range | NPS 1/2" – 24" (DN15 – DN600) |
| Body Material | WCB · CF8 · CF8M · WC6 · WC9 |
| Bonnet Type | Bolted / Pressure Seal / Bellows Sealed |
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— Full Specifications
API 623 Flanged Globe Valve - Parameter Table
| PARAMETER | SPECIFICATION |
|---|---|
| Standard | API 623 |
| Pressure Class | Class 150 / 300 / 600 / 900 / 1500 / 2500 (ASME B16.34) |
| Size Range | NPS 1/2" – 24" (DN15 – DN600) |
| Body Material | WCB (ASTM A216) / CF8 (ASTM A351) / CF8M / WC6 / WC9 |
| Disc Material | WCB+STL / F316/ CF8M / CF8 / F304 |
| Seat Material | A105+STL, F304, F316 |
| Stem Material | F6a, 17-7PH, F304, F316, XF-19 |
| End Connection | Flanged RF / RTJ – ASME B16.5 |
| Bonnet Type | Bolted Bonnet / Pressure Seal Bonnet / Bellows Sealed |
| Flow Pattern | Straight Pattern / Angle Pattern / Y-Pattern |
| Operation | Handwheel / Gear Operated / Electric / Pneumatic Actuator |
| Leakage Class | API 598 Class IV / Class VI |
| Test Standard | API 598 (100% Shell & Seat Pressure Test) |
| Temperature Range | -29°C ~ +538°C (Material & Class Dependent) |
| Applicable Media | Crude Oil / Natural Gas / High-Pressure Steam / Process Chemicals |
Our Production Process
1. Casting
2. Machining
3. Testing
4. Loading
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This Product Spec Sheet
Single-page datasheet for API 623 Flanged Globe Valve.
- Full parameter table
- Dimensional drawing
- Materials & standards list
- Ordering code guide
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— WHY bAUTU
Why Specify This Valve from Bautu
Superior Throttling & Flow Regulation
The globe valve's linear plug-to-seat design enables precise flow throttling with high rangeability, making it the preferred choice over gate valves for applications requiring frequent partial-open operation. Stellite-overlaid disc and seat faces resist wire drawing erosion under high-velocity, high differential-pressure throttling conditions, ensuring sustained sealing performance over extended service life.
Pressure Seal & Bellows Sealed Options
For Class 900 and above high-pressure service, the pressure seal bonnet provides self-energized sealing under system pressure. For toxic, hazardous, or zero-fugitive emission applications, a bellows sealed stem design (ISO 15848 compliant) eliminates stem packing leakage risk, meeting the most demanding environmental and safety specifications in refinery and chemical plant procurement
— FAQ
Frequently Asked Questions
What is an API 623 globe valve, and how does it differ from a gate valve?
API 623 is the American Petroleum Institute standard for steel globe valves used in petroleum, petrochemical, and natural gas pipelines. Unlike gate valves which are designed only for full-bore isolation, globe valves use a plug-and-seat design that allows precise flow throttling and regulation in addition to shut-off. The trade-off is a higher pressure drop across the valve due to the change in flow direction inside the body. Globe valves are the preferred choice for flow control, pressure regulation, steam service, and applications requiring frequent operation — such as bypass lines, cooling water control, and process flow regulation in refineries and power plants.
What industries and applications specify API 623 globe valves?
API 623 globe valves are specified across oil and gas production, LNG terminals, petrochemical plants, power generation, and offshore platforms where rigorous design, material, and testing standards are required. Common applications include steam bypass and pressure-reducing stations, compressor inlet and outlet control, heat exchanger flow regulation, chemical injection lines, and safety-critical shut-off duties. The standard covers pressure classes from Class 150 to Class 2500, ensuring the valve meets ASME B16.34 pressure-temperature requirements across the full range of process conditions.
What sizes and lead times are available, and what custom options does Bautu offer?
Bautu manufactures API 623 globe valves from NPS ½" to NPS 24" across Class 150 to Class 2500. Standard sizes in Class 150 and Class 300 are delivered in 5–7 weeks; higher pressure classes (Class 600–2500) or large bore sizes typically require 8–12 weeks. Custom configurations include WCB, LCB, CF8M, WC6, and WC9 body materials, Stellite-hardfaced seats and plugs for erosive service, bellows sealed stems for zero fugitive emissions, electric or pneumatic actuator packages, and full third-party inspection (API monogram, SGS, BV, TÜV). Submit your valve datasheet for a tailored quotation within 24 hours.
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