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Help CenterJIS F7481 Butterfly Valve DN50-DN300 for Ship Sewage With Warranty
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Shanghai Zhibang Valve Manufacture Co., Ltd, established in 2016, is a professional manufacturer dedicated to providing high-quality valves for marine applications. Our JIS F7481 Butterfly Valve, available in sizes from DN50 to DN300, is specifically engineered for ship sewage systems, offering exceptional corrosion resistance and reliable sealing performance. With a standard warranty and adherence to JIS standards, this valve ensures long service life and minimal maintenance, making it the ideal choice for shipbuilders and operators seeking cost-effective and durable solutions.
Key Features and Technical Specifications
- Compliance with JIS F7481: Designed and manufactured strictly according to the JIS F7481 standard, ensuring compatibility with Japanese maritime specifications.
- Wide Size Range: Available from DN50 to DN300, covering various piping requirements in ship sewage systems.
- Corrosion-Resistant Materials: The valve body can be made of ductile iron or cast iron, while the disc is offered in stainless steel (optional) to withstand harsh sewage environments.
- Flexible Operation: Choose between manual lever, gearbox, or pneumatic actuation to suit your control preferences.
- Wafer-Style Connection: Easy installation between flanges, saving space and reducing weight.
- Reliable Sealing: Equipped with high-quality EPDM or NBR seats (optional) to ensure bubble-tight shut-off even in low-pressure conditions.
| DN Size | JIS Rating | Face-to-Face (mm) | Weight (kg) |
|---|---|---|---|
| DN50 | 5K / 10K | 43 | 2.5 |
| DN80 | 5K / 10K | 46 | 3.5 |
| DN100 | 5K / 10K | 52 | 5.0 |
| DN150 | 5K / 10K | 56 | 7.5 |
| DN200 | 5K / 10K | 60 | 10.0 |
| DN250 | 5K / 10K | 68 | 14.0 |
| DN300 | 5K / 10K | 78 | 18.0 |
Note: Above values are typical for JIS 10K rating. Please confirm with our sales team for exact specifications and customized options.
Advantages for Your Business
- Reduced downtime thanks to durable components and easy maintenance design.
- Lower total cost of ownership due to long service life and minimal replacement frequency.
- Compatible with standard ship piping systems, simplifying procurement and stock management.
- Optional materials and actuation allow customization to specific project needs.
As a trusted manufacturer, Shanghai Zhibang Valve has exported over US$1 million – US$1.5 million annually since 2016, serving markets across North America, Europe, Asia, Africa, and Oceania. Our ISO9001-certified production processes ensure consistent quality, and each valve undergoes rigorous testing before shipment. With shipping ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we offer flexible logistics solutions. Backed by our comprehensive warranty and responsive after-sales support, you can rely on our butterfly valves for your ship sewage applications. Contact us today for a quote or technical consultation.
Frequently Asked Questions
Q1: Can this valve be used for seawater in addition to sewage?
A: While designed primarily for ship sewage, the valve can be adapted for seawater with appropriate material selection (e.g., stainless steel disc and EPDM seat). Please consult our engineers for specific recommendations.
Q2: What seat materials are available?
A: Standard options include EPDM and NBR. PTFE lining is also available upon request for enhanced chemical resistance.
Q3: Do you provide OEM/ODM services?
A: Yes, we offer customization of valve body material, disc, seat, color, and packaging based on your drawings or specifications.
Q4: How long is the warranty period?
A: We provide a standard 1-year warranty against manufacturing defects. Extended warranty can be negotiated for bulk orders.
Q5: What actuation options do you support?
A: We offer manual lever, gearbox, pneumatic, and electric actuators. Pneumatic and electric types can be supplied with accessories like solenoid valves and limit switches.
Q6: Are your valves suitable for Class NK, Lloyd's, or other classification societies?
A: Currently our valves are manufactured per JIS F7481 and ISO9001. For specific class society approvals, please contact our team to discuss feasibility.
Q7: Can I get a sample before bulk order?
A: Yes, samples are available. Sample cost and freight will be discussed based on size and quantity.
Q8: What is the typical lead time?
A: For standard sizes (DN50-DN300), lead time is approximately 15-25 working days, depending on quantity and customization requirements.
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