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Help CenterMarine Engine Room Fuel Oil Line Check Valve Carbon Steel Flanged PN1.6-6.4MPa DN15-DN200
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Shanghai Zhibang Valve Manufacture Co., Ltd. (established 2016) is a professional manufacturer specializing in high-performance check valves for marine applications. Our Marine Engine Room Fuel Oil Line Check Valve is engineered with carbon steel body and flanged ends, designed to withstand pressures from PN1.6 to PN6.4MPa (150-600 class) and sizes from DN15 to DN200 (1/2” to 8”). This valve ensures reliable backflow prevention in fuel oil systems, supporting the demanding operational safety of marine engine rooms. With an annual export value of US$1-1.5 million and ISO9001 certification, we deliver consistent quality to global markets including North America, Europe, Southeast Asia, and Oceania.
Key Features & Technical Specifications
Our check valve is built to meet the rigorous standards of marine classification societies, offering superior durability, low pressure drop, and easy maintenance. The carbon steel casting (WCB or WCC) provides excellent strength and corrosion resistance under fuel oil environments. The flanged connection simplifies installation into existing pipelines, while the swing or lift disc design ensures quick response to flow changes, minimizing water hammer effects.
| Parameter | Value |
| Material | Carbon Steel (ASTM A216 WCB / WCC) |
| Pressure Rating | PN1.6 – 6.4MPa (150 – 600 Lb Class) |
| Size Range | DN15 – DN200 (1/2” – 8”) |
| Flange Standard | ANSI B16.5 / DIN / JIS (customizable) |
| Disc Type | Swing or Lift (optional) |
| Design Standard | API 602, BS 1868, or customer specification |
| Media | Fuel Oil, Diesel, Heavy Fuel Oil, Lube Oil |
| Operating Temperature | -20°C to +350°C |
| Body Sealing | Metal-to-Metal or Soft Seat (optional) |
Detailed Advantages for Marine Fuel Oil Systems
- Robust Backflow Prevention: The swing disc design provides a tight seal when flow reverses, preventing fuel oil from returning to the wrong section of the pipe network. This is critical for engine room safety and efficiency.
- Low Pressure Drop: Optimized disc profile and flow path reduce head loss, saving pump energy and ensuring stable fuel oil supply to engines.
- High Pressure & Temperature Capability: Rated up to PN6.4MPa (600Lb) and 350°C, suitable for high-pressure fuel oil heating systems commonly used in large marine engines.
- Corrosion Resistance: Carbon steel body with optional epoxy coating or zinc plating resists corrosion from sulfur, moisture, and acidic components in heavy fuel oil.
- Easy Installation & Maintenance: Flanged ends allow quick bolt-on connection without welding; the bonnet design provides access for internal inspection and seat replacement.
- Compliance with Marine Standards: Designed per API 602, BS 1868, and can be manufactured to meet classification society requirements (ABS, DNV, Lloyd’s etc.) upon request.
- Customizable Options: Available with lifting lug, locking device, bypass valve, or position indicator to suit specific marine automation requirements.
Reliability & Trust Backed by Experience
As a manufacturer since 2016, Shanghai Zhibang Valve has exported over US$1 million annually to more than 10 global regions including North America, Europe, Africa, and Oceania. Our factory holds ISO9001:2015 certification, ensuring stringent quality control from raw material inspection to final pressure testing. Every check valve undergoes hydrostatic and pneumatic testing before shipment. Our standard delivery terms are FOB Shanghai, Guangzhou, Hong Kong, or Beijing, with lead times of 15-30 days for standard sizes. We offer 12-month warranty against manufacturing defects. For marine spare parts or custom orders, our engineering team provides prompt technical support. Contact us today for a competitive quotation and reliable solution for your fuel oil line check valve needs.
Frequently Asked Questions (FAQ)
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Q1: What is the difference between swing check and lift check for fuel oil lines?
A: Swing check valves use a freely rotating disc and are ideal for low-velocity applications where minimal pressure drop is required. Lift check valves have a guided disc that moves vertically, providing tighter sealing in high-pressure systems. Our marine check valve offers both options – swing type is commonly used for fuel oil main lines, while lift type is recommended for smaller branch lines or high-pressure injection systems. -
Q2: Can this valve be used for other media besides fuel oil?
A: Yes, the carbon steel body is suitable for many hydrocarbon fluids, lubricating oil, water, and steam (within temperature limits). However, for aggressive chemicals or seawater, we recommend stainless steel or special alloy materials. Please consult us for specific media compatibility. -
Q3: What flange standards are available?
A: We supply flanges per ANSI B16.5 (150/300/600 Lb), DIN PN16/PN40, JIS 10K/20K, as well as GB/T and customer drawings. The standard connection is raised face (RF) but flat face (FF) and ring joint (RTJ) are available on request. -
Q4: How can I ensure the valve meets classification society requirements?
A: Our standard design complies with API 602 and BS 1868. If your project requires ABS, DNV, Lloyds, or other classification, we can provide additional certification testing (material traceability, NDT, hydro test witnessed by surveyor) at an extra cost. Please specify the required society when ordering. -
Q5: What is the minimum order quantity (MOQ)?
A: For standard sizes DN15-DN200, the MOQ is 1 piece. For custom designs or non-standard materials, MOQ may be 5-10 pieces, depending on complexity. -
Q6: What is the typical lead time?
A: Standard sizes (DN15-DN100) are usually in stock and can be shipped within 7-15 days after payment. Larger sizes (DN125-DN200) require 20-30 days. Custom engineering may take 30-45 days. Express delivery (e.g., DHL/FedEx) is available for small quantities. -
Q7: Does the valve come with a position indicator?
A: Standard valves do not include a position indicator. However, we can add a visual open/close indicator or a limit switch for remote monitoring as an optional feature. Please inquire. -
Q8: What warranty do you offer?
A: We provide a 12-month warranty from the date of shipment covering manufacturing defects. Extended warranty up to 24 months is available upon request.
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