Description
Bellow Sealed Globe Valve DN100 PN16 RF | DIN 3356 GS-C25 Bellows Seal Globe Valve Manufacturer
DIN 3356 Bellow Sealed Globe Valve – GS-C25, DN100, PN16, RF
The Bellow Sealed Globe Valve DN100 PN16 RF is engineered for applications where zero stem leakage, operational safety, and long service life are critical. Manufactured according to the requirements of DIN 3356, this valve utilizes a precision-welded stainless steel bellows assembly to provide a hermetic seal between the process medium and the external environment.
Constructed from GS-C25 cast carbon steel, the valve combines excellent mechanical strength, reliable shutoff performance, and precise flow regulation. It is widely used in steam systems, thermal power plants, heat transfer applications, chemical processing facilities, and industrial utility services.
Unlike conventional packed globe valves, bellows-sealed designs eliminate fugitive emissions through the stem area, making them ideal for hazardous, toxic, expensive, or environmentally sensitive media.
Product Gallery
What Is a Bellows Sealed Globe Valve?
A bellows sealed globe valve incorporates a multi-ply stainless steel bellows welded between the stem and bonnet.
This design creates a permanent metal barrier that prevents leakage through the stem packing area.
Advantages Over Conventional Globe Valves
| Feature | Conventional Globe Valve | Bellows Sealed Globe Valve |
|---|---|---|
| Stem Leakage Risk | Possible | Virtually Eliminated |
| Environmental Protection | Moderate | Excellent |
| Maintenance Frequency | Higher | Lower |
| Fugitive Emissions | Possible | Minimal |
| Service Life | Standard | Extended |
The valve still incorporates a secondary graphite packing system as a backup safety seal.
Key Features
Zero External Leakage
The welded bellows assembly prevents media from escaping through the stem area.
Double Stem Sealing System
- Primary Seal: Stainless Steel Bellows
- Secondary Seal: Graphite Packing
This dual protection system maximizes operational safety.
Precise Flow Regulation
The globe valve design allows excellent throttling performance for:
- Steam systems
- Thermal oil systems
- Hot water applications
- Process control lines
Long Service Life
The bellows assembly is designed for thousands of operating cycles while maintaining sealing integrity.
Low Maintenance
Reduced packing wear results in lower maintenance requirements and reduced operating costs.
Technical Specifications
| Item | Specification |
|---|---|
| Product Name | Bellows Sealed Globe Valve |
| Standard | DIN 3356 |
| Nominal Size | DN100 |
| Pressure Rating | PN16 |
| Body Material | GS-C25 |
| Bonnet Material | GS-C25 |
| Bellows Material | SS316Ti / SS321 |
| Stem Material | SS420 / SS431 |
| Seat Material | Stainless Steel Overlay |
| Connection Type | RF Flanged |
| Face-to-Face | DIN EN 558 |
| Flange Standard | EN 1092-1 |
| Testing Standard | EN 12266-1 |
| Operating Temperature | -29°C to 400°C |
| Leakage Class | Zero Visible Leakage |
| Operation | Handwheel |
| Optional Actuation | Electric / Pneumatic |
Available Material Options
Besides GS-C25, we also manufacture bellows sealed globe valves in:
| Material | ASTM Equivalent |
|---|---|
| GS-C25 | WCB |
| GGG40.3 | Ductile Iron |
| CF8 | 304 Stainless Steel |
| CF8M | 316 Stainless Steel |
| WC6 | Alloy Steel |
| WC9 | High Temperature Alloy Steel |
| C12A | F91 Alloy Steel |
This allows customization for various industrial environments.
Working Principle
The valve operates using a linear-motion stem mechanism.
Opening Process
- Handwheel rotates.
- Stem lifts vertically.
- Disc moves away from seat.
- Flow path gradually opens.
Closing Process
- Stem moves downward.
- Disc contacts seat.
- Flow is restricted and shut off.
- Bellows remain sealed throughout operation.
This design provides accurate flow control and excellent shutoff performance.
Applications
Steam Systems
One of the most common applications.
Suitable for:
- Boiler systems
- Steam distribution lines
- Condensate return systems
- Process steam networks
Thermal Power Plants
Used in:
- Main auxiliary steam systems
- Feedwater lines
- Drain systems
- Instrument connections
Chemical Processing
Ideal for handling:
- Hazardous chemicals
- Toxic fluids
- Volatile organic compounds
- High-value process media
The bellows seal prevents emissions and product loss.
Pharmaceutical Industry
Used where contamination prevention is essential.
Applications include:
- Clean steam systems
- Process fluid handling
- Utility services
Oil & Gas Facilities
Suitable for:
- Utility systems
- Process piping
- Heat transfer systems
- Chemical injection systems
District Heating Networks
Commonly installed in:
- Heat transfer stations
- Municipal heating systems
- Hot water distribution pipelines
Benefits of GS-C25 Material
GS-C25 is a cast carbon steel equivalent to ASTM WCB.
Advantages include:
Excellent Mechanical Strength
Suitable for medium-pressure industrial service.
Good Weldability
Allows easy integration into industrial piping systems.
Cost Effective
Provides excellent performance at lower cost compared to stainless steel.
Temperature Resistance
Performs reliably in elevated temperature applications.
Quality Assurance
Every valve undergoes comprehensive testing before shipment.
Standard Tests
- Hydrostatic Shell Test
- Seat Leakage Test
- Bellows Integrity Test
- Functional Operation Test
- Material Verification
- Dimensional Inspection
Testing is conducted according to:
- EN 12266-1
- DIN 3230
Optional Features
Actuator Options
- Electric Actuator
- Pneumatic Actuator
- Hydraulic Actuator
- Gear Operator
Special Seat Options
- Stellite Overlay Seat
- Hardened Stainless Seat
- Soft Seated Design
Special Service Configurations
- Oxygen Service
- Thermal Oil Service
- High Temperature Steam Service
- Vacuum Service
Available Documentation
Upon request, we can provide:
✅ Technical Datasheet
✅ GA Drawing
✅ Material Test Certificate EN 10204 3.1
✅ Pressure Test Report
✅ Installation Manual
✅ Operation & Maintenance Manual
✅ Packing List & Inspection Report
Frequently Asked Questions
Why choose a bellows sealed globe valve instead of a standard globe valve?
Bellows sealed valves eliminate stem leakage and significantly reduce maintenance requirements.
What media can this valve handle?
Suitable media include:
- Steam
- Water
- Thermal Oil
- Condensate
- Industrial Gases
- Non-corrosive Chemicals
What is the maximum operating temperature?
Depending on materials, temperatures up to 400°C are achievable.
Can the valve be automated?
Yes.
Electric, pneumatic, and hydraulic actuators are available.
What industries commonly use bellows sealed valves?
Common industries include:
- Power Generation
- Chemical Processing
- Petrochemical
- Pharmaceutical
- HVAC
- District Heating
How long does the bellows last?
High-quality bellows assemblies are typically designed for thousands of operating cycles and long-term service.
Related Products
You may also be interested in:
- DIN Bellows Sealed Gate Valve
- Bellows Sealed Stop Valve
- High Pressure Steam Globe Valve
- F91 Globe Valve
- DIN Check Valve
- Pressure Seal Globe Valve
- API 602 Forged Globe Valve
Request a Quote
Looking for DIN 3356 Bellows Sealed Globe Valve Supplier?
We provide:
✅ Factory Direct Pricing
✅ Fast Production Lead Time
✅ OEM & Custom Branding
✅ Technical Support Within 24 Hours
✅ Worldwide Export Experience
✅ Third-Party Inspection Support
Send Your Inquiry Today
Please provide:
- Valve Size
- Working Pressure
- Operating Temperature
- Media Type
- Quantity Required
- Project Specification
Our engineering team will prepare a detailed quotation, technical datasheet, and delivery schedule within 24 hours.
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