JIS F7321C Marine Valve

JIS F7321C Marine Ductile Iron SDNR Valve – 5K Stop Check Non-Return Valve for Marine Fuel Systems

Overview

Our JIS F7321C Marine Ductile Iron SDNR Valve is a high-performance stop check non-return valve specifically engineered for critical fuel oil and lubricating oil systems in marine applications. Manufactured to exact Japanese Industrial Standard F7321C specifications, this 5K pressure rated dual-purpose valve combines the functions of a stop valve and check valve in one compact unit. Featuring ductile iron construction with stainless steel or bronze trim and compliance with JIS B2220 flange dimensions, it ensures reliable flow control and backflow prevention in vital shipboard systems.

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Key Features & Benefits

• Dual-Function Design: Combines manual stop valve and automatic check valve functionality in a single unit

• JIS F7321C Standard Compliance: Precision-engineered to Japanese Industrial Standard specifications

• Ductile Iron Construction: Superior strength and impact resistance compared to standard cast iron

• Premium Trim Options: Stainless steel (SUS) or bronze seating surfaces for optimal media compatibility

• 5K Pressure Rating: Ideal for fuel and lubrication systems (50 psi operating pressure)

• JIS B2220 Flange Compatibility: Standard flange dimensions ensure easy installation and maintenance

• IACS Certification: Manufactured to meet ABS, BV, CCS, LR, RINA classification society requirements

• OEM/ODM Services: Complete customization with client branding and specifications

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Technical Specifications

• Design Standard: JIS F7321C

• Flange Standard: JIS B2220

• Pressure Rating: 5K (50 psi)

• Temperature Range: -20°C to 150°C

• Body Material: Ductile Iron (FCD450/GGG40 equivalent)

• Trim Options: Stainless Steel (SUS304/SUS316) or Bronze

• Stem Material: Stainless Steel or Brass

• Nominal Diameter: DN15 to DN40 (½” to 1½”)

• Operation: Manual Handwheel with Automatic Check Function

• Media: Fuel Oil, Lubricating Oil, Hydraulic Fluids, Non-corrosive Liquids

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Certification & Compliance

• IACS Member Approvals: RINA, ABS, CCS, BV, LR

• Material Certification: 3.1/3.2 material certificates available

• Testing Standards: Hydrostatic, shell, and seat testing per JIS requirements

• Quality Assurance: ISO 9001 compliant manufacturing process

• Third-Party Inspection: Accepted for project verification and approval

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Dimension Table (JIS F7321C 5K Standard)

The description/sizes may be different with goods, please check with us when order.

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