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J-VALVES
CF8M Stainless Steel Material: The valve body, disc and key components are cast from CF8M (316 stainless steel), offering excellent corrosion resistance, high temperature resistance and mechanical strength. It works well in service with chloride-containing and other corrosive media.
Triple Eccentric Structure:
First eccentricity: The stem is offset from the disc center to reduce friction between the disc and seat.
Second eccentricity: The stem is offset from the valve body flow channel to further lower operating torque.
Third eccentricity: The conical sealing face of the disc creates a unique geometric wedging effect with the seat, achieving true metal-to-metal zero-leakage sealing.
Metal Hard Seal: Adopted composite sealing rings of multi-layer stainless steel and graphite or all-metal sealing rings. The sealing assembly is heat-resistant and wear-resistant, suitable for high temperature, high pressure and particle-laden media services.
Flange Connection: Available with RF (Raised Face) or RTJ (Ring Type Joint) flanges in accordance with ASME B16.5. With a pressure class of 900LB, it ensures reliable sealing under high pressure conditions.
Fire Safety Design: Compliant with API 609 and API 607 standards. It maintains sealing performance during fire incidents to prevent medium leakage.
Anti-Static Device: Built-in anti-static structure effectively prevents static accumulation and mitigates fire and explosion risks.
Anti-Blowout Stem: The stem adopts anti-blowout design to ensure operational safety and avoid accidental stem ejection under internal fluid pressure.
Bi-Directional Sealing: The triple eccentric structure enables bi-directional sealing, maintaining superior tightness regardless of medium flow direction.
Low Operating Torque: The triple eccentric design greatly reduces opening and closing torque. Smaller-sized actuators can be applied to cut down overall costs.
| Parameter Item | Specification |
Nominal Diameter | 2" ~ 60" (DN50~DN1500) |
Pressure Class | 150LB ~ 900LB (PN20~PN160) |
Temperature Range | Standard: -29℃ to +538℃; Custom version up to +650℃ |
Valve Body Material | CF8M (ASTM A351 Gr. CF8M, equivalent to 316 stainless steel) |
Disc Material | CF8M / CF8M with Stellite overlay |
Stem Material | 17-4PH Stainless Steel / XM-19 Stainless Steel |
Seal Material | Multi-layer stainless steel + flexible graphite / Stainless steel + Inconel / All-metal seal |
Connection Type | Flanged (RF / RTJ) |
Operation Mode | Manual (Worm gear / Lever), Electric, Pneumatic, Hydraulic |
Design Standards | API 609, ASME B16.34, MSS SP-68 |
Test Standards | API 598, ISO 5208, MSS SP-61 |
Face-to-Face Dimension | Comply with API 609 / ASME B16.1 |
Leakage Class | ANSI/FCI 70-2 Class VI (Zero Leakage) |
The valve is widely used in multiple industries:
Petroleum & Natural Gas: Long-distance pipelines, LNG terminals, oil & gas field production, gathering and transmission systems for reliable isolation and regulation of high-temperature and high-pressure media.
Petrochemical Industry: High-temperature and high-pressure process pipelines in refineries, catalytic cracking and hydrocracking units to prevent medium leakage.
Power Industry: Main steam pipelines, reheat steam pipelines and water supply systems of thermal power plants for reliable shut-off of high-temperature and high-pressure steam.
Chemical Industry: Transmission and reaction systems for various corrosive chemical media including acid, alkali and salt solutions.
Metallurgical Industry: High-temperature medium control for blast furnace gas, hot blast stove systems and cooling water systems.
Municipal Heating: Main pipelines of urban central heating for flow regulation and shut-off of high-temperature high-pressure steam and hot water.
Seawater Desalination: High-pressure reverse osmosis systems and seawater transmission pipelines, taking advantage of CF8M's excellent seawater corrosion resistance.
Zero-Leakage Sealing: The triple eccentric metal hard seal structure achieves ANSI Class VI zero leakage, complying with the strictest environmental protection and safety regulations.
Adaptability to Extreme Conditions: Rated at 900LB high pressure and applicable within a wide temperature range from -29℃ to +538℃, it covers most industrial high-temperature and high-pressure working scenarios.
Long Service Life & Low Maintenance: Metal sealing faces feature good erosion and wear resistance. No frictional contact occurs during valve operation. Its service life is far longer than soft-seated butterfly valves, which greatly reduces maintenance costs.
High Safety Performance: Multiple safety configurations including fire-safe design, anti-static device and anti-blowout stem protect personnel and equipment.
Bi-Directional Pressure Withstanding: No need to consider medium flow direction, which allows flexible installation and simplifies engineering design.
Cost-Effective & Space-Saving: Compared with gate valves and globe valves of the same size, its weight is reduced by 40%~60% and installation space is saved by over 50%, effectively lowering the total cost of pipeline systems.
Good Compatibility with Automation: Low torque design is compatible with various electric and pneumatic actuators, enabling easy remote control and automatic system integration.
