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OEM Factory for Marine Butterfly Valves, GB/T3036, Cast Steel Body & EPDM Liner
Product Spotlights
OEM marine butterfly valves built to GB/T3036 standard. Features a durable cast steel body and a resilient EPDM liner for superior seawater corrosion resistance and reliable sealing in ballast, cooling, and firefighting systems. Offers flexible actuation and connection options, backed by ISO9001 certified manufacturing and global export experience. Customizable for shipyards and marine suppliers.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Standard:
GB/T3036
Application:
Other, Marine
Material:
Cast Steel Body with EPDM Liner
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Standard
GB/T3036
Application
Other, Marine
Material
Cast Steel Body with EPDM Liner
Service
OEM Manufacturing Available
Connection Type
Wafer, Lug, Flanged (Optional)
Size Range
DN50 to DN1200 (2“ to 48“)
Pressure Rating
PN10, PN16, PN25, Class150
Operation
Lever, Gear, Electric, Pneumatic Actuator
Seat Material
EPDM (Standard), NBR, Viton Optional
Disc Material
Cast Steel, Ductile Iron, Stainless Steel
As a specialized valve manufacturer established in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. is dedicated to providing robust and reliable flow control solutions for demanding marine environments. Our OEM marine butterfly valves, engineered to the GB/T3036 standard, are specifically designed to withstand the harsh conditions of seawater, saline atmospheres, and rigorous shipboard operations. With an annual export value reflecting our global reach across markets from North America to Southeast Asia, we combine rigorous manufacturing processes under our ISO9001 certification with a deep understanding of maritime industry requirements. This valve represents a core component for shipbuilders, repair yards, and offshore operators seeking durable, leak-tight performance in critical piping systems for ballast, cooling, firefighting, and general service applications.
Constructed for longevity and minimal maintenance, our marine butterfly valves feature a cast steel body offering superior strength and corrosion resistance, paired with a resilient EPDM liner that ensures an excellent seal and compatibility with a wide range of media. The design prioritizes easy operation, space efficiency, and reliable shut-off, making it an ideal choice for the confined spaces and demanding duty cycles found on vessels and offshore installations.
Core Technical Specifications & Design Advantages:
- Body & Disc Construction: The valve body is manufactured from high-grade cast steel (WCB, LCB, etc.), providing the necessary mechanical strength for marine pressures and potential impacts. The disc, often made from the same material or coated/plated versions, is designed for smooth, low-torque operation and positive shut-off.
- EPDM Liner Superiority: The Ethylene Propylene Diene Monomer (EPDM) seat liner is the heart of the valve's sealing performance. It offers outstanding resistance to seawater, mild chemicals, ozone, and weathering. Its elasticity ensures a tight seal against the disc with minimal wear over time.
- GB/T3036 Compliance: Adherence to the Chinese National Standard GB/T3036 for butterfly valves guarantees dimensional interchangeability, pressure-temperature ratings, and performance benchmarks that are recognized and trusted in many international markets, particularly in Asia.
-
Versatile Actuation Options: To suit various automation and control system requirements, the valve can be fitted with different actuators:
- Manual: Lever handle for quick operation or gearbox for higher torque applications.
- Powered: Electric or pneumatic actuators available for remote or automated process control.
- Connection Flexibility: Available in wafer, lug, and double-flanged designs to seamlessly integrate into existing ship piping systems without requiring extensive modification.
Detailed Parameter Table:
| Parameter | Specification / Option |
|---|---|
| Standard | GB/T3036, Design can be to API609, ISO 5752 |
| Size Range (DN) | 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600, 700, 800, 900, 1000, 1200 |
| Pressure Rating | PN10, PN16, PN25; ANSI Class 150 |
| Body Material | Cast Steel (WCB), Ductile Iron, Stainless Steel (CF8/CF8M) optional |
| Seat/Liner Material | EPDM (Standard), NBR, Viton (FKM), Silicone optional |
| Disc Material | Cast Steel, Stainless Steel, Nylon Coated, Epoxy Coated |
| Operating Temperature | -20°C to +120°C (with EPDM seat, varies with seat material) |
| Operation Method | Lever, Worm Gear, Electric Actuator, Pneumatic Actuator |
Benefits for Your Marine Projects:
- Enhanced Corrosion Resistance: The cast steel body, often with suitable surface treatments, and the EPDM liner work in tandem to resist the corrosive effects of seawater and marine atmospheres, extending service life and reducing replacement costs.
- Reliable, Bubble-Tight Seal: The resilient EPDM liner provides excellent sealing capabilities, minimizing leakage in critical systems like ballast and bilge, which is vital for vessel safety and operational efficiency.
- Reduced Maintenance & Operational Cost: The simple, robust design has fewer wearing parts compared to other valve types. The EPDM liner's durability means less frequent maintenance intervals and lower lifetime costs.
- OEM Flexibility: As an OEM factory, we offer significant customization. This includes branding, specific packaging, material certifications, and design modifications to meet your exact specifications or to match existing fleet standards.
- Global Supply Chain Support: With major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure efficient and flexible logistics to support shipyards and marine suppliers worldwide, from initial project phases to urgent spare part requirements.
Backed by our ISO9001 certified quality management system and nearly a decade of manufacturing expertise since 2016, Shanghai Zhibang delivers valves that meet consistent quality standards. Our products have gained trust in diverse and demanding markets across North America, South America, Europe, Asia, Africa, and Oceania, demonstrating their global applicability. The OEM capability is a key strength, allowing shipowners, shipyards, and marine equipment distributors to source reliable, cost-effective valves under their own brand, supported by our technical know-how. For your next marine valve requirement, partner with a manufacturer that understands the sea's challenges. Contact us to discuss your specifications, request samples, or obtain a competitive quotation tailored to your project volume and needs.
Frequently Asked Questions (FAQ):
-
Q: What are the main advantages of using an EPDM liner in a marine butterfly valve?
A: EPDM rubber offers exceptional resistance to seawater, ozone, UV exposure, and a wide temperature range. It provides a reliable, resilient seal that ensures leak-tight closure, which is crucial for ballast, cooling, and other critical marine systems, while also being cost-effective and durable. -
Q: Can you supply valves according to standards other than GB/T3036, such as API or ISO?
A: Yes. While GB/T3036 is our standard offering, we regularly manufacture valves to API 609, ISO 5752, and other international standards upon request. Please specify your required standard during inquiry. -
Q: What types of actuators are compatible with your marine butterfly valves?
A: Our valves are designed to be compatible with a wide range of actuators. We can supply them with manual lever or gear operators, as well as interface with electric or pneumatic actuators from major brands. We can also provide fully assembled actuated valve packages. -
Q: What is the typical lead time for an OEM order of these valves?
A: Lead time depends on order quantity, size, and customization level. Standard configurations typically have shorter lead times. We provide estimated schedules upon order confirmation and work to meet project deadlines, leveraging our efficient manufacturing processes. -
Q: Are material test certificates (MTC) or other documentation available for these valves?
A> Yes, material test certificates and other relevant documentation, such as inspection reports, can be provided. This is a common requirement for marine applications and is part of our standard quality assurance process, especially for OEM clients. -
Q: How do you ensure corrosion protection for the cast steel body in a saltwater environment?
A> The cast steel body is typically provided with a robust surface coating, such as epoxy paint or other marine-grade protective finishes, as standard. For more severe service, options like stainless steel construction or specialized coatings are available. -
Q: What is your minimum order quantity (MOQ) for OEM projects?
A> Our MOQ is flexible and varies based on valve size and customization requirements. We cater to both small trial orders and large-volume production runs. Please contact us with your specific needs for a detailed discussion. -
Q: Which ports do you ship from, and what are the main export regions?
A> We primarily ship from Shanghai, Guangzhou, Hong Kong, and Beijing ports. Our main export markets include North America, South America, Europe, Southeast Asia, Africa, the Middle East, and Oceania, giving us extensive experience in international marine logistics.
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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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