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Home > Industrial Equipment & Components > Valve > Butterfly Valve > Marine Butterfly Valve for Seawater Intake and Discharge Applications, GB/T3036 Compliant

Marine Butterfly Valve for Seawater Intake and Discharge Applications, GB/T3036 Compliant

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Marine Butterfly Valve for Seawater Intake and Discharge Applications, GB/T3036 Compliant photo-5

Product Spotlights

Designed for harsh seawater environments, this GB/T3036 compliant marine butterfly valve offers superior corrosion resistance with duplex stainless steel discs and EPDM seats. Its robust construction ensures reliable, leak-proof performance in intake and discharge systems. Available in DN50-DN800 sizes with multiple actuation options, it simplifies installation and reduces long-term maintenance costs for global marine projects.

Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)

Key Specifications

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Application:

Other, Seawater Intake / Discharge / Cooling Systems

Material:

Ductile Iron / Bronze / Stainless Steel

Connection Type:

Wafer / Lug

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Shanghai Zhibang Valve Manufacture Co.,ltd

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
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Application Other, Seawater Intake / Discharge / Cooling Systems

Material Ductile Iron / Bronze / Stainless Steel

Connection Type Wafer / Lug

Operation Type Lever / Gear / Electric Actuator

Seat Material EPDM / NBR / PTFE

Disc Material Duplex Stainless Steel

Standard Compliance GB/T 3036

Nominal Diameter DN50 to DN800

Nominal Pressure PN10 / PN16

As a leading manufacturer in the valve industry, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our specialized Marine Butterfly Valve. Engineered for demanding seawater intake and discharge applications, this valve is designed to withstand the harsh marine environment, ensuring reliable flow control in critical shipboard and offshore systems. With our expertise honed since 2016 and backed by ISO9001 certified quality management, we deliver robust, high-performance valves that meet the stringent requirements of maritime operations worldwide.

Our Marine Butterfly Valve offers exceptional durability and corrosion resistance, making it an ideal choice for seawater handling. Its compact, lightweight design simplifies installation and maintenance, even in space-constrained engine rooms and piping networks. We understand the critical nature of marine systems, which is why every valve undergoes rigorous testing to ensure leak-proof operation and long service life under high-pressure and saline conditions.

Key Features & Technical Advantages:

Superior Corrosion Resistance: Critical components like the disc and seat are crafted from advanced materials such as duplex stainless steel and EPDM/NBR/PTFE, specifically chosen to resist pitting, crevice corrosion, and degradation caused by chlorides in seawater.
Robust Construction & Compliance: Manufactured in full compliance with the GB/T 3036 standard, ensuring dimensional accuracy, pressure integrity, and interchangeability. The valve body is made from high-grade ductile iron, bronze, or stainless steel for maximum strength.
Excellent Sealing Performance: The precision-engineered seat provides a bubble-tight seal, minimizing internal leakage and ensuring efficient system operation. The sealing mechanism is designed to maintain integrity even with frequent cycling and abrasive media.
Versatile Actuation Options: Available with manual lever, gear operator, or electric actuator configurations. This flexibility allows for easy integration into automated control systems or for manual operation as needed.
Low Torque & Easy Operation: The streamlined disc design and low-friction seat material result in exceptionally low operating torque, reducing the effort required for actuation and extending the life of actuators.
Bi-Directional Flow Capability: Designed for bidirectional shut-off, providing reliable isolation in either flow direction, which is crucial for complex seawater piping layouts.

Detailed Technical Specifications:

Parameter	Specification
Standard	GB/T 3036
Nominal Diameter (DN)	50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600, 700, 800
Nominal Pressure (PN)	PN10, PN16
Body Material	Ductile Iron (GGG40), Bronze, Stainless Steel (CF8M/316) *
Disc Material	Duplex Stainless Steel, Bronze, Stainless Steel *
Seat Material	EPDM (for seawater), NBR, PTFE *
Connection Type	Wafer, Lug
Operation Type	Lever, Worm Gear, Electric Actuator (optional)
Temperature Range	-10°C to +120°C (depends on seat material)

* Specific material combinations are customizable based on application requirements.

Benefits for Your Marine Projects:

Enhanced System Reliability: Prevents unexpected failures in seawater cooling, ballast, fire-fighting, and bilge systems, reducing downtime and maintenance costs.
Long-Term Cost Efficiency: The corrosion-resistant materials extend valve life significantly, lowering total cost of ownership compared to standard valves.
Simplified Inventory & Maintenance: Standardized design per GB/T 3036 ensures easy replacement and compatibility with existing piping, simplifying spare parts management.
Improved Safety: Reliable shut-off capability enhances the overall safety of marine operations by preventing uncontrolled seawater ingress or discharge.
Global Supply Chain Support: With annual exports valued between US$1-1.5 million and shipments from major ports like Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely delivery to your global projects across North America, Europe, Asia, Africa, and Oceania.

Shanghai Zhibang Valve's commitment to quality is validated by our ISO9001 certification, ensuring every Marine Butterfly Valve meets consistent performance standards. Our established presence in over a dozen global markets, including North America, Southeast Asia, Europe, and the Middle East, is a testament to the trust shipyards, naval architects, and marine engineers place in our products. For your next seawater intake or discharge project, choose a valve built for endurance and backed by proven manufacturing excellence. Contact us today to discuss your specifications and receive a tailored quotation.

Frequently Asked Questions (FAQ)

Q: Why is compliance with GB/T 3036 important for a marine butterfly valve?
A: GB/T 3036 is a Chinese national standard that specifies dimensions, pressures, and testing requirements for butterfly valves. Compliance ensures the valve fits standard piping flanges, meets pressure ratings, and has undergone defined performance tests, guaranteeing reliability and interchangeability in marine systems, especially for projects with Chinese equipment or standards.
Q: What is the best seat material for seawater applications?
A: For handling raw seawater, Ethylene Propylene Diene Monomer (EPDM) is highly recommended due to its excellent resistance to saltwater corrosion, ozone, and weathering. PTFE seats offer superior chemical resistance for specific media but may have different temperature and pressure limits.
Q: Can this valve be used with an electric actuator for remote operation?
A: Yes, absolutely. Our valves are designed to be compatible with various electric actuators. We can provide the valve as a package with an actuator or supply it ready for you to mount your preferred brand of actuator, offering flexibility for automated control systems.
Q: What are the main differences between wafer and lug type connections?
A> A wafer-style valve is sandwiched 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 when one side needs to be disconnected.
Q: How do you ensure the valve's corrosion resistance for long-term seawater service?
A> We achieve this through material selection (e.g., duplex stainless steel discs) and protective coatings or linings on the valve body where applicable. The specific material combination is chosen based on the seawater's temperature, flow velocity, and presence of other chemicals to maximize service life.
Q: What is your typical lead time for orders?
A> Lead times vary based on order quantity, valve size, and material specifications. Standard configurations typically have shorter lead times. We provide accurate delivery estimates upon receipt of your detailed inquiry and work efficiently to meet project schedules.
Q: Do you offer customization for special requirements?
A> Yes, as a manufacturer, we have the capability to customize valves. This can include special materials, extended shafts, different painting requirements, or non-standard pressure ratings. Please share your detailed specifications for evaluation.
Q: What after-sales support do you provide?
A> We provide technical documentation, installation guides, and spare parts support. Our team is available to assist with technical queries during installation and operation to ensure optimal performance.