CBM 1037-81 Cast Steel Storm Valve – Automatic Overboard Discharge Prevention for Marine Applications
Product Overview
The CBM 1037-81 Cast Steel Storm Valve is a critical safety valve designed for marine sewage and wastewater discharge systems. Engineered with ZG15-II cast steel construction and bronze components, this specialized valve automatically closes to prevent seawater backflow during overboard discharge operations. With a 0.1 MPa pressure rating and sizes from DN50 to DN150, it ensures reliable performance in preventing reverse flow while meeting international marine certification standards for shipboard wastewater management.
Key Features & Benefits
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✅ Automatic Closure System – Prevents seawater backflow during overboard discharge
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✅ Marine-Grade Materials – ZG15-II cast steel with ZQSn10-2 bronze disc for corrosion resistance
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✅ Dual Flange Design – Separate inlet and outlet flanges for easy pipeline integration
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✅ 0.1 MPa Pressure Rating – Optimized for wastewater discharge applications
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✅ IACS Certification Ready – CCS, ABS, LR and other classification society approvals
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✅ Emergency Safety Function – Critical for vessel stability and environmental protection
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✅ Custom Material Options – Special materials available upon request
Material Composition
| Component | Standard Material | Properties |
|---|---|---|
| Body & Cover | ZG15-II Cast Steel | High strength and impact resistance |
| Disc | ZQSn10-2 (Tin Bronze) | Excellent corrosion resistance and sealing |
| Axes | QAI9-2 (Aluminum Bronze) | High strength and wear resistance |
Technical Specifications
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Nominal Diameter: DN50-DN150
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Pressure Rating: 0.1 MPa
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Standard: CBM 1037-81 (Chinese Marine Standard)
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Operation: Automatic closing prevention
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Media: Sewage, Wastewater, Bilge Water
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Applications: Overboard discharge systems, marine sanitation
Dimension Table
| DN (mm) | L | H | Inlet Flange (mm) | Outlet Flange (mm) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| D | C | g | t | h | D’ | C’ | g’ | t’ | h’ | ||||||
| 50 | 70 | 185 | 210 | 120 | 90 | 130 | 105 | 88 | 14 | 15 | 155 | 130 | 112 | 14 | 15 |
| 65 | 86 | 200 | 235 | 130 | 100 | 155 | 130 | 112 | 14 | 15 | 180 | 145 | 125 | 14 | 19 |
| 80 | 105 | 226 | 270 | 150 | 120 | 180 | 145 | 125 | 14 | 19 | 200 | 165 | 145 | 16 | 19 |
| 100 | 125 | 250 | 315 | 175 | 140 | 200 | 165 | 145 | 16 | 19 | 235 | 200 | 180 | 16 | 19 |
| 125 | 150 | – | 365 | – | 165 | 235 | 200 | – | 16 | 19 | 265 | 230 | 210 | 18 | 19 |
| 150 | 175 | – | 395 | – | 170 | 265 | 230 | – | 18 | 19 | 300 | 260 | 235 | 18 | 23 |
The description/sizes may be different with goods, please check with us when order.
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