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J-VALVES
DN1000 PN63 A105 Extended Stem Fully Welded Ball Valve
ASTM A105 Forged Steel Body: The valve body is forged from premium ASTM A105 carbon steel featuring high tensile strength, superior toughness and outstanding pressure resistance for high-pressure service.
Fully Welded Construction: The monolithic all-welded body eliminates external leakage paths and removes leakage risks at flanged joints, securing consistent sealing performance throughout service life.
Large Bore Configuration: The DN1000 (40-inch) large bore design accommodates high-volume fluid conveyance and minimises pressure drop across pipeline systems.
Extended Stem Construction: The extended stem variant facilitates buried valve installation, installation under thermal insulation layers, and operation under extreme high/low temperature environments, enabling convenient above-ground operation and maintenance.
Trunnion-Mounted Ball Design: Built on a trunnion-mounted ball structure with upper and lower bearing supports, the valve maintains stable operation under high differential pressure with low operating torque and exceptional sealing performance.
Dual Sealing System: Primary sealing options include metal-to-metal hard seal or soft seat seal, with an in-built seat self-relief function to guarantee tight bi-directional shutoff.
Anti-Static Device: Built-in anti-static springs and steel balls establish continuous electrostatic conduction between ball, stem and valve body to prevent static accumulation and potential fire hazards.
Anti-Blowout Stem Structure: A shoulder-type anti-blowout stem with gland retainer prevents stem ejection under extreme operating conditions to safeguard operational safety.
Maintenance-Free Design: Combining fully welded body construction with premium sealing components, the valve delivers maintenance-free performance over its full service life and cuts overall operational expenses substantially.
Parameter Item | Specification |
Nominal Diameter | DN1000 (40″) |
Pressure Class | PN63 (Class 400) |
Operating Temperature Range | Standard: -29℃ ~ +200℃; Optional: -46℃ ~ +350℃ |
Body Material | ASTM A105 Forged Steel |
Ball Material | ASTM A105 with ENP (Electroless Nickel Plating) or stainless steel overlay welding |
Stem Material | ASTM A182 F6a / 17-4PH Stainless Steel |
Seat Material | RPTFE / PEEK / Metallic Hard Seal |
Sealing Material | RPTFE, Graphite, Metallic Seal |
End Connection | Butt Weld (BW) complying with ASME B16.25 |
Stem Type | Extended Stem |
Operation Mode | Worm Gear Operator, Electric Actuator, Pneumatic Actuator, Gas-Hydraulic Actuator |
Design Standards | API 6D, ASME B16.34, ISO 14313 |
Test Standards | API 6D, API 598, ISO 5208 |
Fire-Safe Standard | API 607 / ISO 10497 |
Leakage Class | Zero leakage per ISO 5208 Rate A / API 598 |
Face-to-Face Dimension | Customised in accordance with API 6D or client’s requirements |
Long-Distance Natural Gas Transmission Pipelines: Used for mainline shutoff and off-take regulation on long-haul natural gas pipelines to secure safe and stable grid operation.
Urban Gas Distribution Systems: Applicable for city gas gate stations, pressure regulating stations and high/medium-pressure pipeline networks to achieve reliable gas shutoff and flow modulation.
District Heating Pipelines: Installed on primary and secondary circuits of municipal central heating systems for dependable isolation and flow regulation under high-temperature high-pressure hot water service.
Petrochemical Industry: Suitable for high-temperature high-pressure process piping in refineries and chemical plants to ensure stable and secure plant operation.
Power Generation Industry: Deployed in fuel supply and cooling water systems of thermal and gas-fired power plants to satisfy high-flow high-pressure working requirements.
LNG Receiving Terminals & Storage Facilities: Designed for process piping and cryogenic storage systems at LNG receiving terminals; paired with extended cryogenic stem design for reliable performance under ultra-low temperature conditions.
Advantage | Detailed Description |
Zero-Leakage Assurance | The all-welded body eliminates all external leakage points. Paired with high-performance sealing system, it achieves lifelong zero leakage and meets stringent environmental and safety regulations. |
High Pressure & High Flow Capacity | DN1000 large bore plus PN63 high pressure rating caters to high-flow and large differential pressure applications, reducing pipeline pressure drop and boosting transmission efficiency. |
Buried-Installation Friendly | Extended stem design allows full underground burial of valves, reducing above-ground footprint and fitting urban pipeline and remote long-distance transmission projects. |
Maintenance-Free Service | No external leak-prone joints on all-welded body plus wear-resistant sealing materials enable over 20 years of maintenance-free operation and drastically lower total lifecycle cost. |
Safe & Stable Operation | Multi-layer safety configurations including anti-static, anti-blowout stem and fire-safe construction protect personnel and equipment against extreme abnormal working conditions. |
Intelligent System Compatibility | Compatible with electric, pneumatic or gas-hydraulic actuators to support remote control and automated system integration for smart pipeline construction. |
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