WJ41H Bellows Sealed Globe Valve
Core Seal Structure: Dual sealing design with austenitic stainless steel bellows + flexible graphite packing for zero external leakage
Wear & Corrosion Resistance: Sealing faces are hard-faced with Co-based alloy; valve stem undergoes quenching and nitriding treatment for enhanced durability
Customization Options: Valve body material, flange dimensions, and weld end specifications can be tailored; plug type can be configured as shut-off or regulating type
Compliance Standards: Designed and manufactured in accordance with GB12235, GB12221, with flange standards meeting GB9113, JB/T79, and HG20596
Typical Applications: Used in pipelines of petroleum, chemical, pharmaceutical, fertilizer, and power industries for medium shut-off or regulation
Key Advantages: Reasonable structure with reliable sealing, long service life, easy installation and maintenance, suitable for a wide range of industrial working conditions
Gaoshan Valve – WJ41H/WJ41W Bellow Sealed Globe Valve
Model Series: WJ41H-16C/25C / WJ41W-16P/25P | Pressure Class: PN16~PN40 | Size Range: DN25~DN150
WJ41 series bellow sealed globe valves are designed for leak-free operation in critical piping systems. Featuring an all-welded stainless steel bellow stem seal, they eliminate stem packing leakage, making them ideal for toxic, flammable, or environmentally sensitive media in petrochemical, pharmaceutical, and power plant applications.
✅ Core Strengths
- Bellows Zero-Leak Design: Austenitic stainless steel bellow provides a hermetic seal, preventing external leakage even under pressure and temperature cycling.
- Wear-Resistant Hard Seal: Sealing surfaces are hard-faced with Co-based alloy, offering excellent wear, corrosion, and anti-friction performance for a long service life.
- Enhanced Stem Performance: Valve stem undergoes quenching and nitriding treatment for improved corrosion and wear resistance.
- Customizable Configurations: Materials, flanges, and weld ends can be tailored to meet specific project requirements.
- Multi-Function Core: The valve plug can be configured as a shut-off type or regulating type for different process needs.
📊 Performance Specifications
| Model | Nominal Pressure (MPa) | Max Temperature (℃) | Applicable Medium |
|---|---|---|---|
| WJ41H-16C/25C | 1.6 / 2.5 | ≤425 | Non-corrosive media (water, steam, oil) |
| WJ41W-16P/25P | 1.6 / 2.5 | ≤150 (with heat jacket) | Corrosive media |
🛠️ Main Component Materials
| Component | WJ41H-16C/25C | WJ41W-16P/25P |
|---|---|---|
| Body / Bonnet / Disc | Carbon Steel | Cr-Ni-Ti Stainless Steel |
| Stem | Chrome Stainless Steel | Cr-Ni-Ti Stainless Steel |
| Sealing Surface | Chrome Steel or Carbon Steel with Hard Alloy Overlay | Cr-Ni-Ti Stainless Steel |
| Packing | Flexible Graphite or SS Wire Reinforced Flexible Graphite | Flexible Graphite or SS Wire Reinforced Flexible Graphite |
| Bellows | Austenitic Stainless Steel | Austenitic Stainless Steel |
📐 Dimensions & Installation Data (PN16/25 Reference)
| DN (mm) | Face-to-Face L (mm) | Valve Height H (mm) | Handwheel Dia. D0 (mm) |
|---|---|---|---|
| 25 | 160 | 222 | 140 |
| 32 | 180 | 222 | 140 |
| 40 | 200 | 275 | 200 |
| 50 | 230 | 275 | 200 |
| 65 | 290 | 282 | 250 |
| 80 | 310 | 292 | 250 |
| 100 | 350 | 425 | 320 |
| 125 | 400 | 507 | 400 |
| 150 | 480 | 550 | 400 |
*Dimensions are for reference only. Contact us for complete drawings for your specific model.
Product Image & Structure Drawing
📝 Design & Manufacturing Standards
- Design Standard: GB12235
- Face-to-Face Dimensions: GB12221
- Flange Standards: GB9113, JB/T79, HG20596
- Testing & Inspection: JB/T9092, GB/T13927
⚙️ Installation & Maintenance Guidelines
- Pre-Installation Check: Inspect the valve for damage, especially the stem. Clean the pipeline to remove debris that could scratch the sealing surface.
- Lifting & Handling: Do not lift the valve by the handwheel or stem. Attach the lifting sling to the valve body/flange.
- Operation Notes: For high-temperature valves above 200℃, perform “hot tightening” of bolts after initial operation to prevent leakage.
- Storage & Freeze Protection: Drain water from the valve if idle in cold weather to prevent freezing damage.
Get Custom Quotation & Technical Support
Contact us for full dimension sheets, CAD drawings, and customized solutions for your specific working conditions.