 |
| Quantity: | |
|---|---|
J-VALVES
Design Features
C95800 Nickel-Aluminum Bronze Body: Precision-cast in accordance with ASTM B148 C95800 (aluminum bronze). The aluminum, iron and nickel elements form a dense aluminum oxide protective film, with seawater corrosion resistance only 1/50 that of carbon steel. Its cavitation erosion and scouring corrosion resistance far exceed those of stainless steel and duplex stainless steel. Nickel enhances corrosion resistance and strength, effectively inhibiting marine biofouling, making it suitable for long-term immersion in seawater environments.
1‑1/2" Small Bore Design: Nominal diameter DN40 is ideal for low-flow medium delivery, a common specification for marine instrument lines, sampling lines, chemical injection lines and similar applications. Compact structure and easy installation.
300LB Medium Pressure Class: Class 300 (PN50) pressure rating, with a maximum working pressure of 5.0 MPa at ambient temperature, suitable for medium-pressure seawater, cooling water, oil and chemical medium piping systems.
Flexible Wedge: Designed with an elastic groove in the middle of the wedge to automatically compensate for seat deformation, ensuring uniform contact of sealing surfaces and reliable sealing performance.
Wedge-Type Gate: Single-gate design that achieves sealing via medium pressure or external force, featuring simple structure and low flow resistance.
Full-Open / Full-Close Operation: When fully open, the flow passage matches the pipe inner diameter with minimal pressure drop. When fully closed, sealing surfaces fit tightly for dependable shut-off.
ANSI Standard Flanged Connection: RF (Raised Face) flanged connection conforming to ASME B16.5, enabling easy integration with North American and global ANSI standard piping systems with high installation interchangeability.
Fire-Safe Design: Compliant with API 607. In the event of soft seal burnout, metal-to-metal sealing between the gate and seat prevents medium leakage during fire conditions.
Blowout-Proof Stem: A limit structure is provided at the stem-wedge connection. Even under abnormal internal pressure, the stem remains retained in the valve body to ensure operational safety.
Low Operating Torque Design: Precision-machined contact surfaces between gate and seat, combined with high-quality grease, reduce opening and closing torque for easy manual or actuated operation.
Technical Parameters
Nominal Size: 1‑1/2" (DN40)
Pressure Class: Class 300 (PN50)
Temperature Range: -29℃ to +425℃
Body: ASTM B148 C95800 Nickel-Aluminum Bronze
Gate: C95800 Nickel-Aluminum Bronze, polished or hardened surface
Stem: Monel K500, 316 Stainless Steel, 17-4PH
Seat: C95800 with Stellite overlay, Monel, 316 Stainless Steel
Packing: PTFE V-rings, flexible graphite, low-emission composite packing
Gasket: PTFE envelope gasket, graphite spiral wound gasket
Handwheel / Gearbox: Aluminum Bronze, Stainless Steel, Ductile Iron
End Connection: Flanged (RF), ASME B16.5
Operation: Manual (handwheel / gearbox), pneumatic (double-acting / spring return), electric (on-off / modulating), hydraulic
Design Standard: ASME B16.34, API 600, API 602
Inspection Standard: API 598
Face-to-Face Dimension: ASME B16.10
Applications
Marine Systems: Used in small-bore pipelines for ballast water, bilge water, cooling water and fire water systems, complying with IMO regulations, resisting seawater corrosion and marine biofouling.
Seawater Desalination: Applied in reverse osmosis pretreatment, high-pressure pump inlet/outlet and product water pipelines, resisting high-salinity seawater corrosion.
Coastal Power Plants: Used in circulating cooling water and seawater intake/discharge pipelines, resisting chloride ion corrosion and microbial adhesion.
Offshore Platforms & FPSOs: Installed in process water, seawater injection and fire water pipelines, adapting to high-humidity, high-salt marine atmospheric environments.
Wastewater Treatment: Used in saline wastewater and industrial wastewater treatment systems, resisting acid-base corrosion and solid particle erosion.
Chemical Industry: Applied in pipelines for weakly corrosive media, brine and bittern, resisting pitting and crevice corrosion.
General Industrial Service: Suitable for low-flow control and isolation of water, oil, gas and other media, especially for marine and corrosive environments.
Advantages & Value
Excellent Seawater Corrosion Resistance: C95800 aluminum bronze offers seawater corrosion rate <0.025 mm/year, with a service life of 20–25 years — 5–10 times that of carbon steel valves — greatly reducing replacement and maintenance costs in marine environments.
Cavitation & Erosion Resistance: In high-velocity sand-bearing seawater service, C95800 provides 3–5 times better cavitation resistance than 316 stainless steel, suitable for high-risk areas such as pump outlets and throttling locations.
Natural Biofouling Resistance: Slow release of copper ions reduces marine organism blockage and microbiologically influenced corrosion (MIC), lowering pigging and chemical cleaning frequency and improving system operating efficiency.
Lightweight & Easy Installation: Aluminum bronze has a lower density than carbon steel and stainless steel, reducing valve weight by 15%–20% for the same size, lowering piping support loads — ideal for weight-sensitive marine and offshore applications.
Safety & Environmental Compliance: Optional classification society certifications meet international shipping standards. Fire-safe and anti-static designs ensure personnel and equipment safety, while low-emission options satisfy environmental regulations.
Easy Maintenance: Mature and reliable flanged and gate valve design, with inline repairable seats, significantly reducing unplanned downtime and maintenance workload.
Flexible System Integration: Multiple actuation types and seat materials available for easy integration into marine automation systems and adaptation to various temperature and chemical medium conditions.
