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Marine Butterfly Valve With Extended Warranty and Full Mill Test Report Documentation
Product Spotlights
Marine-grade butterfly valves designed for harsh seawater environments. Features include superior corrosion-resistant materials (316SS, EPDM), robust construction for leak-proof performance, and low-torque operation. Backed by an extended warranty and accompanied by full Mill Test Report documentation for material traceability and compliance. Ideal for ship cooling, ballast, firefighting, and bilge systems. Customizable sizes (2"-48"), pressure ratings, and actuation options available.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Application:
Other, Seawater Cooling Systems
Standard:
ISO 9001 Quality Management System
Body Material:
Cast Iron, Ductile Iron, Stainless Steel (316/316L)
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, Seawater Cooling Systems
Standard
ISO 9001 Quality Management System
Body Material
Cast Iron, Ductile Iron, Stainless Steel (316/316L)
Disc Material
Stainless Steel (304/316), Nickel Plated, Aluminum Bronze
Seat Material
EPDM, NBR, Viton, PTFE
Size Range
DN50 to DN1200 (2“ to 48“)
Pressure Rating
PN10, PN16, PN25, ANSI Class 150
Operation Type
Lever, Gearbox, Electric Actuator, Pneumatic Actuator
End Connection
Wafer, Lug, Double Flange
Special Feature
Extended Warranty Coverage, Full Mill Test Report
As a specialized manufacturer with a focus on maritime and industrial fluid control, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our Marine Butterfly Valve series. Engineered for the demanding marine environment, these valves are designed to deliver reliable performance, extended service life, and simplified maintenance for shipbuilders, shipyards, and vessel operators worldwide. Our commitment to quality, backed by our ISO9001 certification, ensures that every valve leaving our factory meets stringent standards for corrosion resistance, pressure integrity, and operational durability in seawater applications.
Our Marine Butterfly Valves are built to withstand the harsh conditions encountered at sea, from saltwater corrosion to constant vibration and pressure fluctuations. We understand that downtime is costly in the maritime industry, which is why we offer an extended warranty and provide comprehensive Full Mill Test Report (MTR) documentation for complete traceability and peace of mind. This commitment to transparency and product support is a core part of our value proposition to our global clientele across North America, Europe, Asia, and beyond.
Key Product Features & Technical Advantages:
- Superior Corrosion Resistance: Utilizing materials like 316/316L stainless steel, nickel-plated components, and marine-grade elastomers (EPDM, NBR) for the seat, our valves are specifically selected to combat galvanic corrosion and pitting in seawater systems.
- Robust Construction & Leak-Proof Design: The valve body is precision-cast for strength, while the disc design and seat configuration ensure a bubble-tight seal, critical for ballast, cooling, and fire main systems.
- Low Torque & Easy Operation: The streamlined disc design and high-quality bearings minimize operating torque, allowing for smooth manual operation with a lever or gearbox, and enabling the use of smaller, more cost-effective actuators.
- Versatile Configurations: Available in wafer, lug, and double flange types to suit various piping system requirements. Multiple actuation options (manual, electric, pneumatic) provide flexibility for remote or automated control needs.
- Full Documentation & Traceability: Each valve is supplied with a complete Mill Test Report package. This documentation traces the chemical and mechanical properties of the raw materials (body, disc, stem), providing verifiable proof of material compliance and quality.
Detailed Technical Specifications:
| Parameter | Specification |
|---|---|
| Design Standard | ISO 5752, API 609, BS 5155 |
| Size Range (Nominal Diameter) | DN50 (2") to DN1200 (48") |
| Pressure Rating | PN10, PN16, PN25 / ANSI Class 150 |
| Temperature Range (with EPDM seat) | -10°C to +120°C (14°F to 248°F) |
| Body Materials (Common) | Cast Iron (GG25), Ductile Iron (GGG40), Stainless Steel (CF8/CF8M) |
| Disc Materials (Common) | Stainless Steel (304, 316), Nickel Plated Cast Iron, Aluminum Bronze |
| Stem Material | Stainless Steel (304, 316, 416), with optional sealing arrangements |
| Seat Materials | EPDM (Seawater), NBR (Oil), Viton (Chemicals), PTFE (High Temp) |
| End Connection Types | Wafer (PN10/16), Lug (PN10/16), Double Flange (PN25) |
| Operation Types | Lever Handle, Worm Gear Operator, Electric Actuator, Pneumatic Actuator |
Benefits for Our Customers:
- Reduced Lifecycle Cost: The extended warranty and durable construction lower total cost of ownership by reducing failure rates and replacement frequency.
- Enhanced System Reliability: Proven performance in critical marine applications minimizes the risk of system failure, ensuring operational safety and efficiency.
- Simplified Compliance & Audits: The Full Mill Test Report documentation simplifies regulatory compliance, class society approvals (ABS, DNV, LR, etc.), and maintenance record-keeping.
- Global Supply Chain Support: With annual exports valued between US$1-1.5 million and major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely and efficient delivery to your project sites worldwide.
- Customizable Solutions: We offer customization in materials, coatings, and actuation to meet specific project specifications or unique operating conditions.
Trust in a manufacturer with a proven track record since 2016. Our valves are specified in projects across our main markets, including North America, South America, Europe, Southeast Asia, Africa, and Oceania. The combination of our ISO9001 certified manufacturing processes, the security of an extended warranty, and the unparalleled transparency of full MTR documentation sets our Marine Butterfly Valves apart. This is not just a product; it's a commitment to your project's success and long-term operational integrity. Contact us today to discuss your requirements, request detailed specifications, or to place an order for valves you can rely on.
Frequently Asked Questions (FAQ):
-
Q: What is typically covered under the "Extended Warranty" for these valves?
A: Our extended warranty covers defects in materials and workmanship under normal marine service conditions for a period beyond the standard industry offering. Specific terms, such as duration and coverage details, are provided with the commercial quotation and can be tailored based on the application. -
Q: Why is a Full Mill Test Report important for marine applications?
A: Marine projects often require certification from classification societies (like ABS, Lloyd's Register). The MTR provides verified, third-party data on the chemical composition and mechanical properties of the metal components, which is a mandatory requirement for material traceability and approval in most shipbuilding and offshore projects. -
Q: Can these valves handle seawater directly?
A: Yes, when configured with appropriate materials. For example, a valve with a 316 stainless steel disc/wetted parts and an EPDM seat is specifically recommended for seawater service due to its excellent resistance to chloride-induced corrosion. -
Q: Are electric or pneumatic actuators available, and are they included?
A: Yes, we offer a range of electric and pneumatic actuators from reputable brands as optional accessories. They can be pre-mounted and tested at our factory before shipment to ensure compatibility and save you installation time on-site. -
Q: What is the lead time for an order of these valves?
A: Lead time depends on the size, material specification, and quantity. Standard configurations are typically available from stock or have shorter production cycles. We provide accurate lead time estimates with every quotation to help you plan your project schedule. -
Q: Do you provide support for spare parts like seals or gaskets?
A: Absolutely. We maintain an inventory of common spare parts, including seat rings, seals, and gaskets. We recommend ordering critical spares with your initial valve purchase to ensure quick maintenance turnaround when needed. -
Q: Can the valves be coated or painted for additional corrosion protection?
A: Yes, additional coatings like epoxy paints, zinc plating, or specialized marine coatings can be applied upon request. This is a common customization for valves used in particularly aggressive environments or to meet specific project color/specification requirements. -
Q: How do I select the correct seat material (EPDM, NBR, Viton, PTFE)?
A: Seat selection depends on the fluid media and temperature. EPDM is standard for seawater, NBR for oils/fuels, Viton for certain chemicals, and PTFE for higher temperatures or more aggressive fluids. Our technical team can assist you in selecting the optimal seat material for your specific application.
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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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