Marine Screw Down Check Valves

JIS Standard Marine Screw Down Check Valves (SDNR) – For Shipbuilding & Offshore Applications

Overview

Our JIS standard Screw Down Check Valves (SDNR Valves) are precision-engineered for critical marine fluid control applications. Designed to prevent backflow and ensure system safety, these marine non-return valves are essential components in ship piping systems, offshore platforms, and marine engineering projects. Manufactured to strict JIS (Japanese Industrial Standard) specifications, they guarantee reliability, durability, and superior performance in harsh seawater environments.

Key Features & Benefits

JIS Standard Compliance: Manufactured to JIS F7311C, JIS F7471, and other JIS specifications for guaranteed quality and international acceptance.
Reliable Backflow Prevention: Effectively stops reverse fluid flow, protecting pumps and equipment from damage.
Robust Construction Materials: Available in marine-grade bronze, cast steel, and cast iron for excellent corrosion resistance and long service life.
Multiple Pressure Ratings: Available in 5K, 10K, 20K, and 30K pressure classes to meet various system requirements.
Screw-Down Design: Allows manual override to stop flow even under pressure, enhancing operational control and safety.
Wide Fluid Compatibility: Suitable for air, fuel oil, lube oil, seawater, freshwater, and other marine fluids.
Global Certification: Available with ABS, BV, CCS, LR, RINA, and other IACS member certifications for worldwide vessel compliance.
OEM & Customization Support: We offer OEM services and custom solutions to meet specific design and branding requirements.