Marine Bronze SDNR (Screw Down Non-Return) Valve – Premium Quality for Marine Fluid Control
Product Overview
The Marine Bronze SDNR Valve is a high-performance non-return valve specifically designed for shipbuilding, vessel repair, and offshore platform applications. Manufactured in accordance with JIS F7400 standards with JIS B2220 flange compatibility, this 5K-rated valve features a robust bronze construction that ensures excellent corrosion resistance and reliable operation in seawater, oil, and gas systems. Its screw-down non-return design prevents backflow while allowing manual shut-off capability, making it ideal for critical marine piping systems.
Key Features & Benefits
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✅ JIS Certified – Complies with Japanese marine valve standards
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✅ Bronze Construction – Superior corrosion resistance in seawater environments
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✅ 5K Pressure Rating – Ideal for medium-pressure marine applications
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✅ Dual Function Design – Combines non-return and manual shut-off capabilities
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✅ JIS B2220 Flange Compatibility – Easy integration with marine piping systems
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✅ Multi-Material Optimization – Carefully selected materials for each component
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✅ OEM & Customization Support – Accepts custom branding and specifications
Material Composition
| Component | Material | Advantage |
|---|---|---|
| Body & Bonnet | Bronze | Excellent seawater corrosion resistance |
| Disc | Bronze/Brass | Reliable sealing and durability |
| Stem & Gland Components | Brass | Smooth operation and corrosion resistance |
| Handwheel | Cast Iron | Robust and cost-effective operation |
| Packing | Non-Asbestos | Environmentally safe and reliable sealing |
| Fasteners & Hardware | Steel/Brass | Secure connections and corrosion resistance |
Technical Specifications
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Nominal Diameter: DN15-DN40
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Pressure Rating: 5K
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Standards: JIS F7411, JIS B2220 Flange
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Media: Sea Water, Oil, Gas, Marine Fluids
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Applications: Shipbuilding, Ship Repair, Offshore Platforms
Dimension Table
| IMPA Code | Model | L | D | C | No. | h | t | H | D2 |
|---|---|---|---|---|---|---|---|---|---|
| 751261 | 7411 5K15 | 100 | 80 | 60 | 4 | 12 | 9 | 155 | 80 |
| 751262 | 7411 5K20 | 110 | 85 | 65 | 4 | 12 | 10 | 165 | 100 |
| 751263 | 7411 5K25 | 120 | 95 | 75 | 4 | 12 | 10 | 185 | 125 |
| 751264 | 7411 5K32 | 140 | 115 | 90 | 4 | 15 | 12 | 195 | 125 |
| 751265 | 7411 5K40 | 160 | 120 | 95 | 4 | 15 | 12 | 210 | 140 |
The description/sizes may be different with goods, please check with us when order.
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