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About Us
Jiangsu Shoulong Valve Co., Ltd.
With over 30 years of manufacturing experience, SLVCN is a professional designer and manufacturer of high-performance forged steel ball valves for critical industrial applications. We specialize in extreme working conditions including high pressure, high temperature, and cryogenic environments, providing safe and reliable flow control solutions for global industrial projects where operational reliability is non-negotiable.
Contact UsCore Product Range of Forged Steel Ball Valves
SLVCN’s core product range covers forged trunnion-mounted and floating ball valves, including top-entry and side-entry designs, fully welded ball valves, metal seated valves, cryogenic variants, and high-pressure models rated up to Class 2500 (PN420), with options for even higher custom pressure ratings. Equipped for high-temperature service, these forged valves outperform conventional cast valves by offering higher material density, superior mechanical strength, enhanced resistance to pressure fluctuations and thermal shocks, and extended durability in severe conditions.
Industrial Applications of Forged Steel Ball Valves on Offshore Oil and Gas Platforms
Forged steel ball valves are essential components for offshore oil and gas platforms due to their ability to reliably control flow under extremely harsh environments. Offshore platforms face challenges including high pressure surges, severe temperature variations, corrosive seawater exposure, and the presence of sour gases like hydrogen sulfide (H2S). SLVCN’s forged steel valves are engineered to meet these challenges, providing bubble-tight sealing to prevent leaks, and compliant with international standards for fire safety, anti-blowout stem protection, and sour service resistance.
These valves are widely implemented for:
- Production and injection manifolds handling high-pressure hydrocarbons.
- Gas compression modules requiring reliable isolation valves under cyclic high pressure and temperature.
- LNG processing and storage tanks needing cryogenic sealing performance down to -196°C.
- Subsea tie-backs and flowlines where mechanical robustness and corrosion resistance are critical.
- Emergency shutdown systems ensuring platform safety and environmental protection.
The Double Block and Bleed (DBB) design typical in forged valves enhances operational safety by allowing isolation and venting within a single valve unit, eliminating potential leakage paths and enabling maintenance without system shutdown.
Development Trends and Future Outlook
The offshore oil and gas sector is evolving rapidly, driven by stricter safety regulations, digitalization of operations, and shifting energy demands. Forged steel ball valves for offshore platforms are advancing in these key areas:
- Integration with Smart Valve Technology: Increasing requirements for remote operation and condition monitoring push the adoption of intelligent actuation systems embedded with sensors for predictive maintenance.
- Materials Innovation: Advanced alloys and coating technologies improve resistance against sour gas corrosion and extend valve lifecycle in aggressive subsea environments.
- Compact and Lightweight Designs: Engineering optimizations reduce valve footprint and weight, critical for offshore platform space and load constraints.
- Higher Pressure and Temperature Ratings: Exploration of deepwater and ultra-deepwater wells requires valves that maintain integrity under ever more extreme conditions.
- Enhanced Environmental Compliance: Valves designed for zero emissions and leak detection support green energy transition goals and regulatory compliance.
Manufacturers like SLVCN continuously invest in R&D to align their forged steel ball valves with these trends, ensuring they remain a trusted choice for offshore operators contending with uncertainty and complexity in the global energy landscape.
Safety and Reliability in Offshore Applications
Safety and reliability are paramount on offshore platforms. SLVCN forged ball valves incorporate industry-leading features such as:
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Double Block and Bleed (DBB) structures for superior isolation and leak prevention -
Anti-blowout stem design to prevent accidental valve failure
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Fire-safe certified designs compliant with API 607 / API 6FA
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Anti-static devices to avoid static discharge hazards
- Emergency sealing systems and pressure-balanced seating for reliable operation under high differential pressure
Valves can be tailored with Single Piston Effect (SPE) or Double Piston Effect (DPE) seat configurations depending on process requirements, and materials meet stringent NACE MR0175 / ISO 15156 standards for sour service, ensuring operational safety in hydrogen sulfide environments.
Quality Assurance & Certifications
SLVCN ensures the highest quality standards through comprehensive inspection and testing protocols per international codes:
- API 6D and API 598 compliance including shell and seat leakage tests targeting zero visible leakage (Rate A)
- Fire-safe testing to API 607 / API 6FA standards
- Cryogenic performance validation down to -196°C in dedicated testing facilities
- Dimensional, operational torque, and positive material identification inspections
Certifications held include ISO 9001, CE marking, and API approvals, alongside adherence to ASME B16.34, DIN, ANSI, and JIS specifications. SLVCN offers wide customization including valve sizes from ½ inch to 36 inches, full or reduced bore, special alloys (A105, LF2, F11, F22, F51, Inconel), soft and metal seats, and intelligent actuators (pneumatic, electric, gear).
Global Reach & Market Presence
SLVCN’s forged steel ball valves serve customers worldwide in over 100 countries, catering to EPC contractors, engineering firms, and end users primarily across Europe, the Middle East, Southeast Asia, and the Americas. Strong engineering expertise, advanced manufacturing capabilities, and rigorous quality control systems enable SLVCN to deliver durable, safe, and engineered valve solutions to the world’s most demanding offshore and industrial projects.
