10K JIS Marine Valves
The JIS 10K Marine Cast Bronze Gate Valve is a high-quality, durable shut-off valve precision-engineered for reliable performance in critical marine piping systems. Manufactured in strict accordance with Japanese Industrial Standards (JIS) , this bronze gate valve is the preferred choice for shipbuilders, marine engineers, and vessel operators requiring a dependable valve for fuel oil, lubricating oil, and water services.
Constructed entirely from high-grade bronze, this valve offers excellent corrosion resistance and long service life in the demanding conditions of a marine environment. The gate valve design provides full, unrestricted flow when fully open, with minimal pressure drop, making it ideal for isolation applications where efficient flow is required.
Key Features & Benefits:
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✔ Full Bore Design: When fully open, the gate retracts completely into the bonnet, providing a straight-through, unobstructed flow path that minimizes pressure loss.
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✔ Marine-Grade Bronze Construction: Body and disc made from durable BC6 bronze, offering superior resistance to corrosion from seawater, fuel oils, and lubricants.
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✔ JIS 10K Flanged Connections: Standard JIS 10K flanges ensure compatibility with a wide range of marine piping systems.
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✔ Versatile Application: Suitable for a variety of media including fuel oil, lubricating oil, and fresh water at temperatures up to 120°C.
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✔ Reliable Sealing: Precision-machined wedge disc provides a tight, positive shut-off when closed.
Applicable Scope
This cast bronze gate valve is specifically designed for use in the following marine piping systems at temperatures of 120℃ or less:
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Fuel Oil Piping
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Lubricating Oil Piping
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Water Piping (Fresh water, cooling water)
Main Materials
| Component | Material | Specification | Properties |
|---|---|---|---|
| Body | Bronze | BC6 | High-strength cast bronze, excellent corrosion resistance |
| Disc | Bronze | BC6 | Durable bronze wedge for positive shut-off |
| Stem | Brass | C3771BD | Corrosion-resistant brass for smooth operation |
Technical Drawing & Dimensions
Below are the key dimensions for our range of JIS 10K bronze gate valves (Model F7368). All dimensions are in millimeters (mm) and weight in kilograms (kg).
| MODEL No. | Size (DN) | Face to Face L (mm) | Flange diam. D (mm) | Flange Pitch C (mm) | Flange Hole n*d (mm) | Weight W (kgs) |
|---|---|---|---|---|---|---|
| F7368 10K15 | 15 | 100 | 95 | 70 | 4×Ф15 | 2.96 |
| F7368 10K20 | 20 | 110 | 100 | 75 | 4×Ф15 | 3.89 |
| F7368 10K25 | 25 | 120 | 125 | 90 | 4×Ф19 | 5.82 |
| F7368 10K32 | 32 | 140 | 135 | 100 | 4×Ф19 | 7.52 |
| F7368 10K40 | 40 | 150 | 140 | 105 | 4×Ф19 | 9.71 |
| F7368 10K50 | 50 | 200 | 155 | 120 | 4×Ф19 | 19.4 |
| F7368 10K65 | 65 | 220 | 175 | 140 | 4×Ф19 | 27.6 |
Frequently Asked Questions (FAQs)
Q1: What is the function of a gate valve, and how does it differ from a globe valve?
A: A gate valve is designed primarily for isolation, meaning it is used to either fully start or fully stop the flow of fluid. It features a wedge-shaped disc (gate) that moves perpendicular to the flow. When fully open, the gate retracts completely, providing an unobstructed, full-bore passage with minimal pressure drop. This differs from a globe valve, which is used for both isolation and flow regulation but creates a more significant pressure drop due to its changing flow path.
Q2: What does JIS 10K flange rating mean for this valve?
A: JIS 10K is a flange pressure rating defined by Japanese Industrial Standards. It specifies the pressure-temperature capability of the valve and its flanges. A “10K” rating is suitable for medium-pressure applications commonly found in marine systems, such as fuel and lubricating oil lines. The “10K” designation ensures the valve’s flange dimensions (diameter, bolt hole pattern, face-to-face length) conform to the JIS B2220 standard, guaranteeing interchangeability with other JIS 10K components.
Q3: Why is BC6 bronze used for the body and disc of this marine valve?
A: BC6 is a specific grade of cast bronze known for its excellent corrosion resistance, good strength, and anti-galling properties. These characteristics are essential for components exposed to marine environments and media like fuel oil and lubricating oil. BC6 ensures the valve body and the moving disc remain reliable and leak-tight over many years of service, resisting the corrosive effects of seawater and other challenging fluids.
Q4: What media and temperatures can this JIS 10K bronze gate valve handle?
A: This valve is specifically designed for use with fuel oil, lubricating oil, and water (fresh water and cooling water) at temperatures of 120℃ or less. It is not intended for high-temperature steam applications. Always ensure the operating temperature and pressure of your system are within the valve’s specified limits.
Q5: Is this valve suitable for seawater service?
A: While BC6 bronze offers good corrosion resistance, this specific model’s applicable scope is listed for fuel oil, lubricating oil, and water piping. For direct, continuous seawater service, a valve with different material specifications (e.g., with a different trim or made from a more specialized bronze) might be recommended. For seawater applications, please consult with our technical team to confirm suitability for your specific conditions.
Q6: How do I select the correct size (DN) gate valve for my piping system?
A: The valve size (DN) should match the nominal diameter of the pipe it is being installed in. For example, a DN50 valve (size 50) is designed to be connected to 50mm nominal bore piping. Selecting the correct size ensures proper flow characteristics and a leak-free flanged connection. Refer to your piping and instrumentation diagram (P&ID) or consult with a marine engineer to confirm the required valve sizes for your system.
Attention please: The description was copied from different cooperating manufacturers. The description may be different with the goods, please check with us when order.
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