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J-VALVES
Forged Valve Body: Made of premium carbon steel or alloy steel via one-piece forging, free of casting defects with dense grain structure, featuring much stronger pressure-bearing performance than cast valves.
Y-Type or T-Type Flow Passage: Optimized internal flow channel effectively lowers fluid resistance and pressure drop to improve overall pipeline operational efficiency.
Disc Guiding Structure: Precision positioning structure ensures accurate centering between disc and seat, reducing part abrasion and extending service life.
Stellite Hardfaced Sealing Surface: Seat and disc sealing areas are overlaid with Stellite alloy, featuring excellent erosion and wear resistance.
Pressure-Sealed Bonnet: Adopts self-tightening pressure sealing for high-pressure working conditions; sealing effect gets better as medium pressure increases.
Rising Stem Structure: Optional outside screw & yoke or inside screw & yoke configuration; outside screw design allows operators to directly check open/closed status visually.
Back Seat Structure: Secondary sealing forms between stem and bonnet when valve fully opens, enabling onsite packing replacement without dismantling the whole valve.
Flanged & Butt-Weld End Connection: Available with RF raised-face flange and BW butt-weld two connection types to fit different installation requirements.
| Item | Specification |
Size Range | 1/2″ ~ 12″ (DN15 ~ DN300) |
Pressure Class | Class 150LB ~ 2500LB (PN10 ~ PN420) |
Temperature Range | -29℃ ~ +538℃ (subject to body material grade) |
Body Material | A105, F11, F22, F304, F316, F304L, F316L |
Disc & Seat Material | Base material + STL hardfacing / Solid Stellite |
Stem Material | 410 Stainless Steel, F6a, 17-4PH |
Sealing Material | Flexible graphite; all-metal seal for high-temperature & high-pressure service |
End Connection | RF Flanged / BW Butt-Weld |
Actuation | Handwheel, Gear Operator, Electric Actuator, Pneumatic Actuator, Hydraulic Actuator |
Design Standards | ASME B16.34, BS 1873, API 623 |
Test Standards | API 598, BS EN 12266-1 |
Face-to-Face Dimension | Compliant with ASME B16.10 |
Oil & Natural Gas: Used for medium cut-off and flow regulation on high-pressure oil & gas transmission pipelines, wellhead equipment and gathering stations.
Thermal Power Industry: Controls high temperature and high pressure medium on main steam pipeline, feedwater pipeline and bypass system.
Nuclear Power Industry: Realizes medium isolation for nuclear-grade piping system (nuclear certified version available).
Chemical Industry: Applied on high-pressure reaction units, synthetic ammonia, urea facilities and other pipelines carrying corrosive medium.
Coal Chemical Industry: Suitable for high-pressure black water and grey water pipeline in coal gasification, coal-to-oil and coal-to-gas projects.
Ship & Offshore Engineering: Provides reliable shut-off for high-pressure hydraulic system, ballast system and fuel piping system.
General Industrial High-pressure System: Used for flow control and shut-off of compressed air, high-pressure water, steam and other industrial medium.
Ultra-high Pressure Resistance: Integral forged structure avoids casting pores and sand holes, capable of Class2500LB ultra-high pressure service to prevent pipeline burst accidents.
Excellent Sealing Stability: Combination of hard alloy sealing and self-tightening bonnet seal achieves zero leakage under large differential pressure.
Long Service Life & Low Maintenance Cost: Precision guiding plus wear-resistant sealing greatly lowers component abrasion, reducing maintenance frequency and spare part replacement expense.
Optimized Operating Torque: Optional balanced disc structure cuts opening and closing torque for easy operation of large-size high-pressure valves.
Wide Working Condition Adaptability: Various material combinations cover full working range from low temperature to high temperature, non-corrosive to strong corrosive medium environment.
Standardized Safety Performance: Manufactured strictly following international API and ASME standards, optional SIL safety certification to guarantee whole system running safely.
Reduced Full-cycle Cost: Despite slightly higher initial purchase cost than cast valves, its long service lifespan and low failure rate effectively lower overall long-term operating cost.
