Bronze Seated JIS Marine Gate Valve DN450mm Size With 2Cr13 Stem for Corrosive Environments

Engineered for demanding marine applications, the Bronze Seated JIS Marine Gate Valve DN450 delivers exceptional corrosion resistance and reliability in saltwater environments. Featuring a 2Cr13 stainless steel stem and precision-machined bronze seating surfaces, this valve ensures zero-leak performance under high-pressure conditions. Ideal for shipbuilding, offshore platforms, and coastal facilities, it exceeds JIS standards for marine fluid control systems while offering extended service life with minimal maintenance.

Chengxin Valve Co., Ltd. leverages 30+ years of industrial expertise to manufacture this critical flow control component, which undergoes rigorous quality checks at our ISO-certified facility. The valve’s design incorporates erosion-resistant materials and robust construction to handle abrasive slurries and chemical-laden fluids commonly encountered in:

• Ballast water management systems
• Seawater cooling pipelines
• Bilge and firefighting networks
• Chemical tanker transfer lines

Key technical advantages include:

• Corrosion Defense: The 2Cr13 stem provides 3x higher pitting resistance than standard 304SS in chloride-rich environments
• Wear Compensation: Self-adjusting gland packing maintains optimal sealing force after repeated cycling
• Flow Efficiency: Full-bore design minimizes pressure drop (Cv>10,000 for DN450 size)
• Emergency Shut-off: Bubble-tight closure within 30 seconds even after 5,000 operational cycles

For ship operators and marine contractors, this translates to:

• Reduced dry-docking frequency due to extended valve lifespan
• 50% lower maintenance costs compared to cast iron alternatives
• Compliance with IMO environmental regulations for zero pollutant leakage

Chengxin’s manufacturing capabilities allow customization of:

• Face-to-face dimensions per JIS B2002 / JIS B2003
• Flange drilling patterns (JIS 10K/16K, JPI, ANSI)
• Stem extensions for submerged applications
• Locking devices for safety-critical systems

Frequently Asked Questions:

Q1: What makes 2Cr13 stem superior for marine valves?
A: 2Cr13 contains 12-14% chromium for enhanced oxidation resistance and hardened surface (HRC 28-32) to resist wire-drawing erosion from particulate media.

Q2: Can this valve handle seawater with high sediment content?
A: Yes. The bronze seat provides natural lubricity that prevents jamming from sand/silt buildup, with optional hardened stellite facings available for extreme abrasion.

Q3: Are testing reports provided with shipment?
A: Each valve includes certified hydrostatic (1.5x rated pressure) and shell test reports per JIS F7360 standards.

Q4: What is the lead time for DN450 valves?
A: Standard configurations ship in 6-8 weeks; expedited production available for urgent projects.

Q5: Do you provide installation guidance?
A: Comprehensive installation manuals and torque specifications are included, with video support accessible via QR code on the nameplate.

Trusted by marine engineers worldwide, Chengxin’s DN450 gate valves have been deployed on over 120 vessels since 2018. Our technical team provides lifetime application support and maintains emergency spare part inventories at major ports. Request material certification packages or discuss project-specific adaptations today through our overseas offices.

Contact our marine division for volume discounts on orders exceeding 10 units or to schedule factory acceptance testing at our 50,000m² facility near Tianjin Port.