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Precision engineered to withstand extreme differential pressures, marine chloride pitting, high-velocity sand slurries, and severe thermal cycles on offshore exploration platforms.
As offshore exploration shifts into ultra-deepwater, high-pressure high-temperature (HPHT) reservoirs, and Floating Production Storage and Offloading (FPSO) vessels, valve metallurgy and structural reliability dictate maritime asset viability.
Offshore platforms operate in non-stop corrosive saline environments with intense wave-induced structural vibration, sour multiphase crude streams laden with H₂S and CO₂, and particulate erosion. Valves must offer zero fugitive emissions and zero body porosity.
Deck load and space constraints on FPSOs and tension-leg platforms drive the demand for compact flanged designs, integral Double Block and Bleed (DBB) manifolds, and high-strength forged bodies that eliminate unnecessary mechanical bulk while preserving rated bursting strength.
Offshore production demands strict safety instrumented systems (SIS). Emergency Shutdown (ESD) valves, riser safety valves, and high-integrity pressure protection systems (HIPPS) require certified fire-safe testing (API 607/6FA) and ISO 15848 low-fugitive packing.
Flanged ball valves designated for offshore installations are manufactured with heavy-duty forged materials to mitigate internal micro-porosity and grain defects typical of standard castings. Trunnion mounted architecture guarantees low operating torque under full differential pressure up to ASME Class 2500 (PN420).
| Parameter | Offshore Specification Standard |
|---|---|
| Design Codes | API 6D, ASME B16.34, ISO 14313, ISO 17292 |
| Pressure Ratings | ASME Class 150 to Class 2500 (PN20 - PN420) |
| Size Range | 1/2" to 36" (DN15 - DN900), Full & Reduced Bore |
| Body Materials | Forged LF2, F316, F51 (Duplex 2205), F53 (Super Duplex 2507), Inconel 625/825 cladded |
| Sour Service | NACE MR0175 / ISO 15156 H₂S Compliant |
| Fire Safety Certification | API 607, API 6FA, ISO 10497 |
| Fugitive Emissions | ISO 15848-1 Class AH / BH, Shell SPE 77/312 |
| Operating Temperatures | -196°C (Cryogenic LNG) up to +550°C (Thermal Fluid) |
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.
Our forged valves feature higher material density, superior mechanical strength, improved resistance to pressure fluctuations and thermal shock, and significantly longer service life under severe service conditions compared with conventional cast valves.
Request Technical ConsultationOur core product range covers forged trunnion-mounted and floating ball valves, top-entry and side-entry ball valves, fully welded ball valves, metal seated ball valves, cryogenic ball valves, high-pressure ball valves up to Class 2500 (PN420) and customized higher pressure ratings, as well as high-temperature service valves.
Designed for High Pressure, High Temperature, and Cryogenic Applications, SLVCN valves are widely used in long-distance oil & gas transmission pipelines, LNG storage and regasification terminals, offshore platforms and deepwater projects, power plants, refineries, compressor stations, and high-pressure chemical processing units.
Whether handling flammable media, corrosive fluids, sour service media (H₂S), ultra-low temperatures, or extreme differential pressures, our valves ensure stable operation, bubble-tight shut-off, and maximum system safety in accordance with international sealing and performance standards.
Certified to international environmental emission and high-pressure sealing metrics.
Our forged ball valves are equipped with Double Block and Bleed (DBB) structures, anti-blowout stems, fire-safe designs in accordance with API 607 / API 6FA, anti-static devices, emergency sealing systems, and pressure-balanced seating structures suitable for high differential pressure operation.
To ensure consistent quality, each valve undergoes a complete series of inspections and performance tests in accordance with API 6D, API 598, and ISO 5208.
Every forging and pressure containment weld is verified through PMI material verification, 100% Ultrasonic Testing (UT), Magnetic Particle Inspection (MPI), and Liquid Penetrant Testing (PT) to eliminate structural risks.
SLVCN operates dedicated cryogenic testing facilities using liquid nitrogen and helium leak detection to validate valve seal integrity, fugitive emission tightness, and operating torque at cryogenic temperatures down to −196°C.
Full customization covering sizes from 1/2” to 36”, special materials including A105, LF2, F11, F22, F51, Inconel, and intelligent actuation with pneumatic, electric, hydraulic, and gear operators.
Select from our field-proven valve configurations for high-pressure production manifolds, gas lift, water injection skids, flare knockouts, and cryogenic storage facilities.
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