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316L Stainless Steel Disc Marine Butterfly Valve, GB/T3036 Compliant for Seawater Corrosion Resistance
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Engineered for harsh marine environments, this 316L Stainless Steel Butterfly Valve offers exceptional seawater corrosion resistance per GB/T3036 standard. Its 316L construction prevents pitting, ensuring long service life in saltwater applications. Features include versatile wafer/lug design, bubble-tight shutoff, and options for manual or automated actuation. Ideal for shipbuilding, offshore platforms, and seawater systems, it reduces maintenance and downtime while providing reliable performance.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Application:
Other, Marine
Material:
316L Stainless Steel Body and Disc
Standard Compliance:
GB/T3036 Standard for Marine Valves
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, Marine
Material
316L Stainless Steel Body and Disc
Standard Compliance
GB/T3036 Standard for Marine Valves
Corrosion Resistance
Specifically Designed for Seawater Applications
Connection Type
Wafer or Lug Style (Optional)
Seat Material
EPDM or PTFE (Optional for Seawater)
Operating Temperature
-20°C to 120°C (Depending on Seat)
Pressure Rating
PN10, PN16, PN25 (Available upon request)
Actuation Type
Manual Lever/Gear, Electric, or Pneumatic Actuator (Optional)
As a leading manufacturer with ISO9001 certified production processes, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in delivering high-performance fluid control solutions for demanding environments. Our 316L Stainless Steel Disc Marine Butterfly Valve represents a pinnacle of engineering designed explicitly to combat the harsh realities of seawater applications. Built in strict compliance with the GB/T3036 standard, this valve offers reliable, long-lasting performance where corrosion resistance is non-negotiable. We understand the critical need for durability and safety in marine and offshore operations, which is why we have engineered this product to be a dependable component in your systems.
This valve is constructed from premium 316L stainless steel, a material renowned for its superior resistance to pitting and crevice corrosion in chloride-rich environments like seawater. The design focuses on minimizing maintenance needs and maximizing service life, even under constant exposure to saltwater spray, immersion, and high humidity. Key features include:
- Superior Material: The body and disc are made from 316L stainless steel, which contains molybdenum for enhanced corrosion resistance compared to standard 304 stainless steel.
- GB/T3036 Compliance: Manufactured according to the Chinese national standard for marine valves, ensuring dimensional accuracy, pressure ratings, and material specifications suitable for marine use.
- Versatile Seating Options: Available with EPDM or PTFE seat materials, chosen for their compatibility with seawater and resistance to biological growth and chemical attack.
- Compact & Lightweight Design: The butterfly valve design offers a significant space and weight saving compared to gate or globe valves, crucial for shipboard installations.
- Low Operating Torque: The disc design and seating technology ensure easy operation, reducing the strain on manual operators or allowing for smaller, more cost-effective actuators.
- Bubble-Tight Shut-off: When fully closed, the valve provides excellent sealing performance, preventing leakage in critical seawater cooling, ballast, or firefighting lines.
The technical specifications below outline the standard configurations available. Customizations for specific pressure ratings, end connections, or actuation packages are available upon request.
| Parameter | Specification |
| Valve Type | Centric, Wafer/Lug Style Butterfly Valve |
| Body & Disc Material | 316L Stainless Steel (CF8M) |
| Stem Material | 316 Stainless Steel |
| Seat Material | EPDM (Standard for seawater), PTFE (Optional) |
| Size Range | DN50 to DN600 (2" to 24") |
| Pressure Rating | PN10, PN16, PN25 (Class150, Class300 optional) |
| Temperature Range | -20°C to 120°C (with EPDM seat) |
| Operation | Manual Lever, Worm Gear, Electric/Pneumatic Actuator |
| Face-to-Face | Complies with GB/T3036, ISO 5752 Series 14 |
Choosing our marine butterfly valve provides tangible benefits for your project:
- Extended Service Life: The 316L construction drastically reduces failure due to corrosion, lowering total cost of ownership.
- Reduced Downtime: Reliable performance means fewer replacements and maintenance interventions.
- System Integrity: Bubble-tight shut-off protects sensitive equipment and ensures operational safety.
- Global Compliance: Adherence to GB/T3036 makes it suitable for vessels and platforms in many international markets.
Backed by our ISO9001 quality management system and an annual export value demonstrating global trust, Shanghai Zhibang Valve delivers proven reliability. Our products reach diverse markets from North America and Europe to Southeast Asia and Africa, proving their adaptability. We offer flexible shipment from major ports including Shanghai, Guangzhou, and Hong Kong. For your next marine, offshore, or coastal seawater project, invest in a valve built to last. Contact us today to discuss your specifications, request a quote, or learn more about our full range of marine-grade valve solutions.
Frequently Asked Questions (FAQ):
-
Q: Why is 316L stainless steel specifically recommended for seawater valves?
A: 316L stainless steel contains molybdenum (2-3%), which significantly increases its resistance to chloride-induced pitting and crevice corrosion, common in seawater. The "L" grade denotes low carbon content, reducing susceptibility to sensitization and intergranular corrosion during welding. -
Q: What does GB/T3036 compliance mean for this valve?
A: GB/T3036 is a Chinese national standard for marine metallic butterfly valves. Compliance ensures the valve meets specific requirements for dimensions, pressure-temperature ratings, materials, and testing methods deemed suitable for marine applications, providing a recognized benchmark for quality. -
Q: Can this valve be used with other corrosive fluids besides seawater?
A: Yes. While optimized for seawater, 316L offers good resistance to a wide range of chemicals, mild acids, and alkalis. It is suitable for many industrial processes, chemical dosing, and wastewater applications. Confirm fluid compatibility for specific chemicals. -
Q: What are the main differences between wafer and lug style body designs?
A: A wafer style is sandwiched between two pipe flanges with long bolts. A lug style has threaded inserts (lugs) on both sides, allowing it to be bolted directly to each flange, which can support the pipeline weight and allow isolation for downstream maintenance. -
Q: Is the valve suitable for both freshwater and seawater cooling systems on ships?
A: Absolutely. Its corrosion-resistant properties make it ideal for both. Using the same valve type across systems can simplify inventory and maintenance procedures onboard. -
Q: What actuator options are available, and how do I choose?
A: We offer manual (lever or gear), electric, and pneumatic actuators. The choice depends on:
- Manual: For frequently operated or accessible valves.
- Electric/Pneumatic: For remote, automated, or large valves requiring high torque. Selection is based on required torque, power source availability, and control needs. -
Q: What is the typical delivery lead time for standard sizes?
A: For standard DN50-DN600 sizes in common pressure ratings, lead time is typically competitive. Exact timing can be confirmed upon order placement, considering current production schedule and order quantity. -
Q: Do you provide documentation like material certificates and test reports?
A> Yes, as an ISO9001 certified manufacturer, we can provide standard documentation including material test reports (MTRs) and factory acceptance test reports upon request, which are often required for marine projects.
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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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