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GB/T 12235 Flanged Globe Valve
LINEAR MOTION · PN10–PN320 · DN15–DN600 · BELLOWS SEALED OPTION
The GB/T 12235 Flanged Globe Valve is a linear motion
control and shutoff valve offering precise flow regulation and
reliable isolation performance. Manufactured to GB/T 12235
standards, it is widely used in steam, oil, gas, and chemical
pipelines where throttling, flow regulation, and frequent
operation are required. Available in straight, angle, and Y
pattern configurations to suit diverse installation
requirements.
| GB/T 12235 | |
|---|---|
| Pressure Rating | PN10 / PN16 / PN25 / PN40 / PN64 / PN100 / PN160 / PN320 |
| Size Range | DN15 – DN600 |
| Body Material | WCB / WC6 / WC9 / CF8 / CF8M |
| Bonnet Type | Bolted / Bellows Sealed (Zero Fugitive Emission) |
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— Full Specifications
GB/T 12235 Flanged Globe Valve - Parameter Table
| PARAMETER | SPECIFICATION |
|---|---|
| Standard | GB/T 12235 |
| Pressure Rating | PN10 / PN16 / PN25 / PN40 / PN64 / PN100 / PN160 / PN320 |
| Size Range | DN15 – DN600 |
| Body Material | WCB / WC6 / WC9 / CF8 (304SS) / CF8M (316SS) |
| Disc Material | A105-STL, F304, F316 |
| Stem Material | 20Cr13, 17-4PH, F304, F318, XM-19 |
| End Connection | Flanged – GB/T 9113 / RF / FF / RJ Face |
| Bonnet Type | Bolted Bonnet / Bellows Sealed Bonnet (Zero Fugitive Emission) |
| Flow Pattern | Straight Pattern / Angle Pattern / Y-Pattern |
| Operation | Handwheel / Gear Operated / Electric / Pneumatic Actuator |
| Leakage Class | GB/T 28480 Class A / API 598 Class VI |
| Test Standard | GB/T 28480 / API 598 (100% Factory Pressure Test) |
| Temperature Range | -29°C ~ +425°C (Material Dependent) |
| Applicable Media | Water / Steam / Oil / Gas / Corrosive Chemical Media |
Our Production Process
1. Casting
2. Machining
3. Testing
4. Loading
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· Product documentation
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This Product Spec Sheet
Single-page datasheet for GB/T 12235 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
Precision Flow Control & Sealing
The globe valve's linear disc-to-seat contact geometry enables precise throttling control, making it superior to gate valves for flow regulation applications. Stellite-overlaid disc and seat surfaces provide excellent erosion and corrosion resistance, maintaining Class A tight shutoff under high pressure steam and high-temperature service conditions up to 425°C.
Bellows Sealed Zero Fugitive Emission Option
For toxic, hazardous, or environmentally sensitive media, a bellows sealed bonnet option is available, providing zero fugitive emission performance and eliminating stem packing leakage risk. This design fully complies with ISO 15848 fugitive emission standards and is widely specified in refinery, chemical, and LNG projects
— FAQ
Frequently Asked Questions
What is a GB/T 12235 flanged globe valve?
GB/T 12235 is the Chinese national standard governing flanged globe valves for industrial pipeline systems. Globe valves are designed for precise flow throttling and shut-off control, making them the preferred choice in steam lines, chemical dosing systems, and process pipelines where flow regulation is critical. Bautu manufactures GB/T 12235 globe valves in pressure ratings from PN10 to PN320 and sizes from DN15 to DN600, covering the full range of industrial service requirements. Body materials include WCB carbon steel, CF8M stainless steel, and LCB low-temperature steel.
What does "bellows sealed" mean, and why does it matter?
A bellows sealed globe valve replaces the traditional packing gland with a flexible metal bellows welded to the valve stem. This design achieves zero fugitive emissions — the stem is fully enclosed, so there is no path for media to leak to atmosphere. Bellows sealed valves are specifically required for handling toxic, flammable, carcinogenic, or environmentally hazardous fluids where any stem leakage is unacceptable. They are widely specified in petrochemical plants, pharmaceutical facilities, and nuclear applications. Bautu's bellows are manufactured from 316L stainless steel and tested to ≥10,000 flex cycles, ensuring long service life under thermal cycling conditions.
What is the standard lead time, and can Bautu handle custom configurations?
Standard GB/T 12235 bellows sealed globe valves are delivered in 4–6 weeks from order confirmation. For large-bore sizes (DN400–DN600) or high-pressure ratings (PN160–PN320), lead times are typically 6–8 weeks. Bautu supports custom configurations including special body materials (Duplex, Super Duplex, Alloy 20), extended bonnet designs for cryogenic or high-temperature service, and actuator-ready stems for electric or pneumatic automation. Third-party inspection (SGS, BV, TÜV) is available on request. Submit your project specifications for a tailored quotation within 24 hours.
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