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Custom Marine Butterfly Valve For Shipbuilding, Mill Test Report Provided
Product Spotlights
Custom marine butterfly valves with Mill Test Report for shipbuilding. ISO 9001 certified, materials traceable, sizes DN50-1200, pressure PN6-PN25. Available in wafer, lug, flanged; manual or actuated. Corrosion-resistant for seawater. Fast lead time, global shipping from Shanghai. Trusted by shipyards worldwide since 2016.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Application:
Other, Marine
Standard:
ISO, API, BS, DIN (available upon request)
Material:
Cast Iron, Ductile Iron, Stainless Steel, etc. (customizable)
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, Marine
Standard
ISO, API, BS, DIN (available upon request)
Material
Cast Iron, Ductile Iron, Stainless Steel, etc. (customizable)
Size Range
DN50 – DN1200 (2“ – 48“)
Pressure Rating
PN6 – PN25, Class 150 – Class 300
Connection Type
Wafer, Lug, Flanged (customizable)
Operation Mode
Manual, Electric, Pneumatic (optional)
Mill Test Report
Provided with each shipment
Certification
ISO 9001:2015
Color
Blue, Red, Black, or RAL color (customizable)
Welcome to Shanghai Zhibang Valve Manufacture Co., Ltd. — Your Trusted Partner for Custom Marine Butterfly Valves.
As a professional manufacturer established in 2016 with an annual export value of US$1–1.5 million, we specialize in producing high-quality marine butterfly valves designed specifically for shipbuilding and offshore applications. Each custom marine butterfly valve is manufactured with precision engineering and comes with a Mill Test Report to ensure full traceability and material compliance. Our valves are trusted by shipyards and marine engineers across North America, Europe, Southeast Asia, and more. Whether you need a standard wafer style or a custom lug type with special coatings, we deliver reliable performance and long service life under harsh marine conditions.
Product Features & Technical Specifications
- Robust Materials: Body can be manufactured from cast iron, ductile iron, stainless steel (CF8, CF8M), or other alloys as per your requirements. Disc materials include stainless steel, aluminum bronze, and duplex stainless steel for corrosion resistance in seawater.
- Leak-Proof Sealing: Seat options: EPDM, NBR, PTFE, or VITON – suitable for fresh water, seawater, oil, and gas media. The resilient seat ensures bubble-tight shut-off and zero leakage.
- Customizable Sizes & Pressure Ratings: Available in DN50 to DN1200 (2" to 48") with pressure ratings from PN6 to PN25 (Class 150 to Class 300). Custom dimensions and drilling patterns are accepted.
- Multiple Operation Modes: Manual (lever gear, worm gear) or actuated (electric, pneumatic) with position indicators and limit switches. Actuators can be supplied with explosion-proof options (ATEX – upon request).
- Mill Test Report Included: Every valve is delivered with the Mill Test Certificate (EN 10204 3.1 or 3.2) that verifies chemical composition and mechanical properties of the raw materials.
- Surface Treatment: Fusion-bonded epoxy coating or special marine-grade paint (e.g., Hempel, Jotun) to resist saltwater corrosion. Colors customizable – blue, red, black, or RAL code.
| Parameter | Standard Range | Custom Option |
|---|---|---|
| Nominal Diameter | DN50 – DN1200 | DN40 – DN2000 (available upon request) |
| Pressure Rating | PN10, PN16 | PN6, PN25, Class 150/300 |
| Temperature Range | -10°C to +80°C (EPDM) | -40°C to +200°C (PTFE/VITON) |
| Face-to-Face Standard | EN 558, API 609 | ISO 5752, BS 5155 |
| Leakage Rate | Zero (bubble-tight) | ISO 5208 Category A |
Key Benefits for Shipbuilders
- Reduced Installation Time: Compact wafer and lug designs allow easy mounting between flanges, saving space and labor. Custom drilling patterns match existing piping systems.
- Extended Service Life: Corrosion-resistant materials and coatings protect against seawater, bilge water, and ballast tank environments. Low maintenance design reduces downtime.
- Full Material Traceability: The Mill Test Report documents each heat number and mechanical test, meeting the strictest ship classification society requirements (DNV, Lloyds, ABS, etc. – class certificates available upon request).
- Flexible Customization: We tailor the valve geometry, actuator interface, and packing to your specific shipboard application. Prototypes and small batches are welcome.
Strengthen your supply chain with a reliable partner. Shanghai Zhibang Valve has been serving global marine clients since 2016, with annual export exceeding US$1 million. Our ISO 9001 certified factory ensures consistent quality. We ship from Shanghai, Guangzhou, Hong Kong, and Beijing ports, offering flexible logistics. Our valves have been supplied to shipyards in Eastern Europe, South America, Southeast Asia, and Africa – with positive feedback on durability and precision. Contact us today for a quote on your custom marine butterfly valve – Mill Test Report included as standard.
Frequently Asked Questions (FAQ)
-
Q: What is a Mill Test Report and why is it important for marine valves?
A: A Mill Test Report (MTR) is a quality assurance document certified by the material manufacturer, showing chemical composition and mechanical properties. It is essential for marine applications to comply with classification society regulations and ensure material traceability for safety. -
Q: Can you provide valves with third-party classification certificates (e.g., DNV, Lloyds, ABS)?
A: Yes, we can arrange third-party inspection and classification certification (DNV, Lloyds, ABS, etc.) upon request at an additional cost. The Mill Test Report is provided as a standard inclusion. -
Q: What materials are best for seawater applications?
A: For seawater, we recommend disc materials like aluminum bronze or duplex stainless steel (e.g., F55, 2507), and seat materials such as EPDM or VITON. The body can be ductile iron with fusion-bonded epoxy coating. We will advise based on your specific medium. -
Q: What sizes and pressure ratings do you support?
A: Standard sizes from DN50 to DN1200, pressure ratings PN6 to PN25 and Class 150 to Class 300. For larger sizes or higher pressures, please consult our engineering team for customized solutions. -
Q: What is the typical lead time for custom marine butterfly valves?
A: Lead time varies depending on quantity and specifications. Generally, 15–30 working days for standard customizations, and 30–45 days for special materials or classifications. We provide a precise schedule after order confirmation. -
Q: Do you offer actuators? Can I specify the actuator brand?
A: Yes, we can supply manual worm gear, pneumatic (double-acting or spring return), and electric actuators (on/off or modulating). We support popular brands and can also integrate third-party actuators you provide. -
Q: What is the warranty period?
A: We offer a standard 12-month warranty from the date of shipment against manufacturing defects. Extended warranties are negotiable based on project requirements. -
Q: How do you ensure quality control during production?
A: Our ISO 9001 system covers raw material inspection, in-process checks (dimensional, pressure test, seat leakage test), and final inspection. Each valve is hydrostatically tested according to API 598 or EN 12266. The Mill Test Report and inspection certificate are included.
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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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