CB T309-1999 Marine Bronze Female Thread Stop Valve – Compact Corrosion-Resistant Flow Control for Marine Systems
Product Overview
The CB T309-1999 Marine Bronze Female Thread Stop Valve is a precision-engineered compact valve designed for marine applications requiring exceptional corrosion resistance. Featuring cast tin bronze construction with aluminum bronze stem, this 1.6 MPa-rated valve provides reliable performance in demanding environments where internal and external corrosion protection is essential. With female thread connections and sizes from DN6 to DN50, it offers perfect solutions for instrumentation, auxiliary systems, and tight spaces in shipbuilding and marine engineering applications.
Key Features & Benefits
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✅ Female Thread Connection – Easy installation in compact piping systems
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✅ Full Bronze Construction – Superior corrosion resistance for marine environments
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✅ 1.6 MPa Pressure Rating – High-pressure capability in compact design
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✅ Multi-Media Compatibility – Suitable for water, oil, gas, and steam applications
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✅ Compact & Lightweight – Ideal for space-constrained marine installations
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✅ Alternative Material Options – Cast steel, SS304, SS316L available upon request
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✅ Precision Flow Control – Excellent shut-off and regulation capabilities
Material Composition
| Component | Standard Material | Premium Options |
|---|---|---|
| Body, Cover & Disc | Cast Tin Bronze (ZQSn) | Stainless Steel 304/316L |
| Stem | Aluminum Bronze (QAI) | Stainless Steel, Monel |
Technical Specifications
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Nominal Diameter: DN6-DN50
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Pressure Rating: 1.6 MPa
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Connection Type: Female Thread (BSPP/G Series)
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Standard: CB T309-1999 (Chinese Marine Standard)
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Media: Water, Steam, Oil, Gas, Marine Fluids
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Applications: Instrumentation, Auxiliary Systems, Tight Spaces
Dimension Table
| DN (mm) | L | H | H1 | D1 | S | Thread | L1 | D0 | S1 | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| 6 | 65 | – | 86 | – | – | G¼ | 19 | 10 | 50 | 0.35 |
| 10 | 75 | – | 88 | – | – | G⅜ | 22 | 12 | 50 | 0.44 |
| 15 | 84 | 35 | 100 | 125 | 35 | G½ | 27 | 14 | 50 | 0.56 |
| 20 | 95 | 40 | 112 | 143 | 40 | G¾ | 36 | 16 | 65 | 0.90 |
| 25 | 110 | 45 | 125 | 158 | 45 | G1 | 41 | 18 | 80 | 1.26 |
| 32 | 130 | 54 | 139 | 176 | 54 | G1¼ | 50 | 20 | 80 | 2.02 |
| 40 | 150 | 65 | 155 | 220 | 65 | G1½ | 60 | 22 | 120 | 2.93 |
| 50 | 180 | 80 | 175 | 283 | 80 | G2 | 70 | 24 | 120 | 4.37 |
The description/sizes may be different with goods, please check with us when order.
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