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Corrosion-Resistant Manual Butterfly Valve for Marine Use, 304SS Body & Lever, EPDM Seal
Product Spotlights
Specifically engineered for marine environments, this manual butterfly valve features a 304 Stainless Steel body and lever for superior corrosion resistance against saltwater. Paired with a reliable EPDM seal, it ensures long-lasting, leak-proof performance in seawater cooling, ballast, and firefighting systems. Its robust yet simple lever operation and low-maintenance design offer a cost-effective and dependable solution for shipbuilders and offshore operators worldwide.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Body Material:
304 Stainless Steel
Seal Material:
EPDM
Operation Type:
Manual Lever
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Body Material
304 Stainless Steel
Seal Material
EPDM
Operation Type
Manual Lever
Application
Marine and Offshore Systems
Corrosion Resistance
Excellent for Saltwater Environments
Connection Type
Wafer or Lug (Specify)
Size Range
DN50 to DN300 (2“ to 12“)
Pressure Rating
PN10/PN16 (Customizable)
Temperature Range
-20°C to +120°C (with EPDM seal)
As a professional manufacturer with a strong focus on marine fluid control solutions, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our Corrosion-Resistant Manual Butterfly Valve. Engineered specifically for the demanding conditions of marine and offshore applications, this valve combines the durability of a 304 Stainless Steel body and lever with the reliable sealing performance of EPDM. Since our establishment in 2016, we have dedicated ourselves to producing valves that meet the rigorous standards of the global maritime industry. This valve is designed to provide a long-lasting, maintenance-friendly, and cost-effective solution for controlling the flow of seawater, ballast, bilge, and other corrosive fluids on vessels and offshore platforms.
Our valve is built to withstand the harsh, salt-laden environment that quickly degrades lesser materials. The core of its resilience lies in the strategic selection of materials and a design focused on simplicity and reliability.
Key Features & Technical Advantages:
- Superior Corrosion Resistance: The body, disc, and lever are constructed from 304 Stainless Steel (AISI 304), known for its excellent resistance to pitting and crevice corrosion in chloride-containing environments like seawater.
- Reliable Sealing: The seat is made from EPDM (Ethylene Propylene Diene Monomer) rubber, which offers outstanding resistance to seawater, mild chemicals, and a wide temperature range, ensuring a bubble-tight seal.
- Robust Manual Operation: The simple yet sturdy lever mechanism allows for quick 90-degree operation from fully open to fully closed, providing clear visual indication of the valve position. The lever is designed for ergonomic handling, even with gloved hands.
- Compact & Lightweight Design: The wafer-style design (optional lug style available) minimizes space requirements and weight compared to gate or globe valves, a critical factor in marine engineering.
- Low Maintenance: The simple design with minimal moving parts reduces the need for frequent maintenance. The EPDM seat is resilient and provides a long service life under normal operating conditions.
- Versatile Application: Ideal for a wide range of marine services including seawater cooling lines, firefighting systems, ballast systems, tank vent lines, and general shipboard piping.
Detailed Technical Specifications:
| Parameter | Specification |
| Body & Disc Material | 304 Stainless Steel (CF8) |
| Stem Material | 304 Stainless Steel |
| Seat / Seal Material | EPDM |
| Operation | Manual Lever (Lockable Handle Optional) |
| Size Range (Nominal Diameter) | DN50 (2") to DN300 (12") - Standard |
| Pressure Rating | PN10 / PN16 (Class 150) - Standard |
| Temperature Range (with EPDM) | -20°C to +120°C |
| Connection Standards | Wafer (between flanges) per ISO 5752, Lug type available |
| Face-to-Face Dimension | Complies with ISO 5752 Series 14/20 |
Benefits for Your Marine Operations:
- Extended Service Life: Resistance to saltwater corrosion significantly reduces failure rates and replacement cycles, lowering your total cost of ownership.
- Operational Reliability: The robust construction ensures dependable performance in critical systems, enhancing onboard safety.
- Reduced Downtime: Easy operation and low maintenance requirements mean less time spent on repairs and more time for vessel operation.
- Global Compliance: While designed for marine use, its construction with common industrial materials makes it suitable for various international projects.
Shanghai Zhibang Valve backs this product with the solid foundation of an ISO9001-certified manufacturing process, ensuring consistent quality in every unit. Our products reach clients across the globe, with significant export experience to North America, Europe, Southeast Asia, Africa, and the Middle East. Sourced directly from our factory, you benefit from competitive pricing and reliable supply, shipped efficiently from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing. Choose our Corrosion-Resistant Manual Butterfly Valve for a proven, durable, and efficient solution to your marine flow control challenges. Contact us today for a quotation or to discuss your specific application requirements.
Frequently Asked Questions (FAQ)
-
Q: Is this valve suitable for seawater applications?
A: Absolutely. The combination of 304 Stainless Steel (resistant to chloride-induced corrosion) and an EPDM seal (resistant to seawater) makes it specifically designed for such harsh environments. -
Q: What is the main difference between wafer and lug type connections?
A: A wafer valve is installed between two pipeline flanges using long bolts. A lug-style valve has threaded inserts (lugs) on both sides, allowing it to be bolted directly to each flange, which can be beneficial for end-of-line applications or where one side needs to be disconnected. -
Q: Can the valve handle other fluids besides seawater?
A: Yes. With the EPDM seal, it is compatible with a range of fluids including fresh water, air, mild alkalis, and certain weak acids. Always confirm chemical compatibility for your specific media. -
Q: Is the lever lockable to prevent unauthorized operation?
A: Our standard lever is not lockable, but we offer an optional lockable handle accessory that can be fitted to secure the valve in a specific position. -
Q: What pressure class is this valve rated for?
A: The standard pressure rating is PN10/PN16 (approximately Class 150). Higher pressure ratings may be available upon request for custom orders. -
Q: Do you provide different seal materials for higher temperatures or different chemicals?
A: Yes. While EPDM is our standard for marine use, we can offer alternative seat materials like Viton (FKM) for higher temperatures or specific chemical resistance, and PTFE for wider chemical compatibility, subject to customization. -
Q: What is the delivery time for standard sizes?
A: For standard sizes within our DN50-DN300 range, we typically maintain stock for fast dispatch. Exact lead times depend on the order quantity and current inventory; please inquire for specifics. -
Q: Are your valves compliant with specific marine classification society standards?
A: Our valves are manufactured under an ISO9001 quality system, which is a fundamental requirement. For valves needing specific approvals from classification societies like ABS, DNV, LR, etc., we can discuss the feasibility and requirements for such certification on a project basis.
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1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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