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J-VALVES
Forged Valve Body: Integrally forged from multiple grades including A105, F304 and F316, the body features compact grain structure free of casting defects with enhanced mechanical strength and pressure bearing capability.
Angle Type Construction: The 90-degree flow layout saves roughly 50% piping space compared with straight pattern globe valves and cuts overall installation cost.
Optional Bellows Seal Structure: Optional bellows seal construction achieves zero external leakage to satisfy stringent environmental protection standards.
Disc Guided Design: Precisely guided disc guarantees central alignment upon closure, improving sealing stability and extending service life.
Hardfaced Sealing Surfaces: Seat and disc sealing faces are overlaid with Stellite alloy to gain excellent wear and corrosion resistance for longer service cycle.
Backseat Structure: Equipped with backseat, packing can be replaced with valve fully open to enable in-line maintenance.
Anti-Blowout Stem Design: Anti-blowout stem complies with API 623 specification to secure safe field operation.
Anti-Static Device: Built-in anti-static component eliminates static accumulation for service with flammable and explosive fluids.
Pressure Seal Bonnet: High-pressure versions adopt pressure self-tightening seal design which provides tighter sealing effect as medium pressure rises.
| Item | Specification |
Size Range | 1/2" ~ 12" (DN15 ~ DN300) |
Pressure Class | Class150 to Class2500 (PN20 to PN420) |
Operating Temperature | -29℃ ~ +538℃, subject to body material and sealing configuration |
Body Material | A105, LF2, F304, F316, F304L, F316L, F11, F22, F91 and other forged grades |
Disc & Seat Material | 304 / 316 stainless steel base with Stellite hardfacing overlay |
Stem Material | 410, 304, 316, 17-4PH stainless steel |
Seat Type | Flat face, conical face, spherical plug face |
End Connection | RF/RTJ flanged, BW butt weld, SW socket weld, NPT threaded ends |
Operation Mode | Manual (handwheel/lever), pneumatic, electric, hydraulic actuation |
Design Standards | ASME B16.34, API 602, API 623, BS 1873 |
Test Standards | API 598, API 6D, ISO 5208, BS 6755 |
Face-to-Face Dimension | Conforms to ASME B16.10 |
End Standard | ASME B16.5 for flanged ends, ASME B16.11 for socket & threaded ends, ASME B16.25 for butt weld ends |
Oil & Gas Industry: Flow regulation and line isolation for oil-gas field production, gathering pipelines and processing facilities, compatible with sour service containing hydrogen sulfide.
Petrochemical Industry: High temperature and high pressure medium control for refinery units, chemical reaction processes and catalytic cracking plants.
Power Generation Industry: Steam isolation and flow adjustment for main steam circuits, feedwater systems and bypass lines of thermal power plants.
Coal Chemical Industry: High-pressure fluid control for coal gasification, coal-to-oil and coal-to-gas projects.
Pharmaceutical Industry: Process pipeline isolation requiring ultra-high cleanliness; bellows sealed variant is available on request.
Shipbuilding & Offshore Engineering: Installation at space-limited piping locations on offshore platforms and marine vessels.
High Reliability Under High Pressure: Solid forged construction preserves structural integrity under maximum Class2500 pressure and drastic temperature fluctuation, lowering body rupture risk.
Space-Saving Layout: 90-degree inlet-outlet layout drastically reduces pipeline footprint, perfect for compact layout on platforms and pipe racks.
Precise Flow Modulation: Linear travel characteristic of globe valve disc delivers superior throttling performance for processes needing accurate flow adjustment.
Easy Maintenance: Backseat design allows packing replacement under pressurized condition; in-situ repair of seat and disc reduces system downtime.
Wide Application Compatibility: Diverse material grades and sealing options cover full range of working conditions from cryogenic low temperature to high heat, non-corrosive to severe corrosive media.
Long Service Cycle: Stellite hardfaced sealing and hardened stem enable stable long-term running under harsh service environments.
International Safety Compliance: Compliant with API 623 and other global specifications; equipped with anti-blowout stem and anti-static unit to protect equipment and operators.
Bellows Seal Version: Suitable for toxic, flammable, high-value fluids where zero packing leakage is mandatory.
Extended Bonnet: Designed for cryogenic service below -29℃ to avoid packing freeze-up on valve stem.
Jacketed Body: Applied for easily solidified media such as asphalt and sulfur to maintain fluid flowability.
By-Pass Assembly: Balances differential pressure across valve for easy opening on large size or high delta-P working condition.
Locking Device: Prevents unintended wrong operation for safety-critical pipelines needing fixed valve position.
Position Indicator: Visually displays open/close status for convenient remote monitoring.
