JIS Marine Non-rising Gate Valve With SS316 Stem Option for Saltwater Corrosion Resistance

Engineered for demanding marine environments, the JIS Marine Non-rising Gate Valve delivers exceptional corrosion resistance in saltwater applications. Featuring an optional SS316 stem construction, this valve prevents stem seizure and extends service life in harsh offshore conditions. Its compact non-rising stem design saves valuable space while maintaining full flow capacity – critical for shipboard piping systems where efficiency matters.

Manufactured to exacting JIS F7366/F7367 standards, this valve ensures compatibility with Japanese vessel specifications and global marine infrastructure. The resilient seat design guarantees bubble-tight shutoff even after prolonged immersion, reducing maintenance downtime and operational risks. With flanged connections conforming to JIS B2220, installation becomes seamless across pump discharges, ballast systems, and seawater cooling lines.

The valve's key operational advantages include:

• Non-binding stem design prevents thread exposure to corrosive media
• Double-disc wedge mechanism compensates for seat wear automatically
• Integral backseat allows packing replacement under pressure
• Gearbox option (available upon request) for high-torque applications

For vessel operators, this translates to reduced lifecycle costs through:

• 50% longer maintenance intervals compared to rising stem valves
• Zero stem corrosion failures in saltwater immersion tests exceeding 5,000 hours
• 30% weight reduction versus conventional gate valves

FAQs:

Q: Does this valve meet classification society requirements?

A: While designed to JIS marine standards, specific certifications (e.g., ABS, DNV) can be provided upon request for project-based orders.

Q: Can it handle seawater with high sediment content?

A: The wedge-guided disc design minimizes sediment accumulation. For severe conditions, hardened seat options are customizable.

Q: Is the SS316 stem standard or optional?

A: SS316 stem is an upgrade option. Standard stems use carbon steel with corrosion-resistant plating.

Q: What's the lead time for DN200 valves?

A: Standard sizes ship in 4-6 weeks. Contact us for expedited production options.

Q: Are test reports provided?

A: Hydrostatic and shell tests per JIS standards are included with shipment documentation.

Trusted by shipyards across Asia and the Middle East, our JIS marine valves undergo rigorous quality control at every production stage. Request a material compliance statement today to verify suitability for your specific seawater chemistry profile. With direct manufacturer pricing and container-load optimization, we deliver cost-efficient solutions without compromising on marine-grade reliability.