Products
Flanged Carbon Steel Ball Valve
Product Overview & Verified Engineering Standards
The flanged carbon steel ball valve is engineered for high-integrity industrial pipeline systems requiring absolute shut-off reliability, long-cycle durability, and verified pressure safety performance under continuous operation.
Unlike threaded or light-duty valves used in utility applications, this valve adopts a flanged bolted connection system fully compliant with ASME B16.5 / EN 1092-1, ensuring:
Uniform gasket compression under thermal cycling
High resistance to pipeline vibration and stress fatigue
Stable sealing performance under Class 150–600 pressure conditions
Engineering Verification Standards
This product is designed and manufactured according to internationally recognized standards:
Design Standard: API 6D / ASME B16.34
Flange Standard: ASME B16.5 / B16.47 / DIN EN 1092-1
Face-to-Face: ASME B16.10 / EN 558
Testing Standard: API 598 / ISO 5208 Class A (Zero Leakage)
Fire Safe Design: Optional API 607 / API 6FA compliance
Pressure Testing Verification
Each valve is individually tested before shipment:
Shell Hydrostatic Test: 1.5 × rated pressure
Seat Leakage Test: 1.1 × rated pressure
Pneumatic Test: Low-pressure air bubble-tight inspection
Acceptance Criteria: No visible leakage (API 598)
Key Engineering Design Features
Flanged Connection System
The flanged end connection is designed for field reliability and installation efficiency, fully compliant with ASME and DIN standards.
Engineering Benefits:
Eliminates field welding and post-weld NDT inspection
Ensures uniform gasket load distribution under bolt preload
Reduces installation misalignment risk in field assembly
ASTM A216 WCB Carbon Steel Body
Material: ASTM A216 WCB cast carbon steel
Mechanical Properties (Standard Range):
Tensile Strength: 485–655 MPa
Yield Strength: ≥250 MPa
Excellent resistance to pressure cycling fatigue
Surface Protection:
Epoxy coating (80–200 μm standard)
Optional offshore anti-corrosion coating system (C5-M marine grade)
Flow Optimization
Full Bore Design
Internal diameter equal to pipeline bore
Flow coefficient (Cv) optimized for minimal restriction
Pressure drop: ΔP ≈ 0 under standard flow conditions
Reduced Bore Design
Compact structure for cost-sensitive applications
Lower torque requirement and lighter weight
Sealing System & Safety Engineering
Seat Materials:
PTFE (standard clean service)
RPTFE (reinforced anti-wear performance)
Metal-to-metal (high temperature / abrasive service)
Stem Safety Design:
Anti-blowout stem (internal retention shoulder)
Designed to prevent stem ejection under full system pressure
Packing System:
Live-loaded chevron packing or graphite sealing rings
Designed for ≥10,000+ operational cycles without adjustment
Industrial Applications
This valve is widely deployed in global EPC and infrastructure projects:
- Oil & Gas: Upstream production, refining, pipeline transmission
- Petrochemical: Hydrocarbon transfer and processing systems
- Water Treatment: High-pressure distribution and desalination plants
- Power Generation: Cooling water and auxiliary steam systems
- Industrial Infrastructure: HVAC and process isolation systems
Typical Operating Conditions:
- Pressure Range: Class 150 – Class 600
- Temperature Range: -29°C to +425°C (dependent on seat selection)
- Service Media: Water, oil, gas, hydrocarbons, steam (non-corrosive or treated fluids)
Manufacturing & Quality Assurance
Each valve is manufactured under a traceable quality control system aligned with ISO 9001 and API quality requirements.
Material Traceability System
Every casting heat is tracked via heat number system
Spectrographic chemical composition analysis for each batch
Mechanical property verification before machining
Dimensional Inspection
Coordinate Measuring Machine (CMM) flange alignment check
ASME B16.10 face-to-face tolerance verification
Bolt-hole alignment validation for field installation compatibility
Pressure & Leakage Testing
100% hydrostatic shell test
100% pneumatic seat leakage test
Acceptance standard: Zero visible leakage (bubble-tight)
Optional third-party inspection:
SGS
Bureau Veritas (BV)
TÜV Rheinland
Documentation Package
Each shipment includes:
EN 10204 3.1 Material Test Report (MTR)
API 598 Pressure Test Certificate
Dimensional Inspection Report
Certificate of Conformance (COC)
Optional third-party inspection report
EPC Procurement Advantages
Compared with standard market carbon steel ball valves, this product provides:
Lower Installation Cost
No welding required
No NDT inspection required
Faster commissioning in field projects
Lower Lifecycle Cost
Full bore design reduces pumping energy consumption
Extended sealing cycle life reduces maintenance frequency
Higher Operational Safety
Anti-blowout stem (API 6D compliant)
Verified zero-leakage performance under API 598
Verified Quality Control System
100% pressure testing
Traceable MTR documentation
Third-party inspection available
Supply Chain Flexibility
OEM/private label available
Custom tag numbering (P&ID compliant)
Flexible MOQ for distributors and EPC contractors
Risk Control & Commercial
To support international EPC procurement requirements:
- Standard Warranty: 12–18 months (depending on contract)
- Inspection Hold Points: Available upon request
- Pre-shipment inspection: Supported by SGS / BV / TÜV
- Replacement policy: Defective units replaced under warranty terms
FAQ
Q: Do you provide full certification packages?
A: Yes. EN 10204 3.1 MTR, API 598 test reports, ISO 9001 compliance documents are standard. API 6D and CE/PED available upon request.
Q: Can the valve be automated?
A: Yes. ISO 5211 mounting pad supports pneumatic and electric actuators.
Q: What is the leakage standard?
A: API 598 zero visible leakage, optionally ISO 5208 Class A or Class VI.
Q: What is your lead time?
A: Standard configurations: 15–30 days depending on order volume.
Q: Do you support third-party inspection?
A: Yes. SGS, BV, and TÜV inspection are fully supported before shipment.
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