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Marine Rubber Lined Butterfly Valve for Bilge, Ballast, and Cooling Water Lines
Product Spotlights
Designed for harsh marine environments, this butterfly valve features a full rubber lining (EPDM/NBR) for superior corrosion resistance in bilge, ballast, and cooling water lines. It ensures bubble-tight sealing, low torque operation, and is available in sizes DN50-DN600 with manual or actuated options. Manufactured under ISO9001, it offers reliable performance, reduced maintenance, and cost savings for shipbuilders and operators worldwide.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Application:
Other, Bilge
Standard:
ISO9001 Quality Management System
Body Material:
Cast Iron, Ductile Iron, Stainless Steel
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, Bilge
Standard
ISO9001 Quality Management System
Body Material
Cast Iron, Ductile Iron, Stainless Steel
Lining Material
EPDM, NBR, Natural Rubber
Disc Material
Carbon Steel with Rubber Lining
Connection Type
Wafer, Lug
Pressure Rating
PN10, PN16
Temperature Range
-10°C to +120°C
Operation Type
Manual Lever, Gearbox, Electric Actuator
Size Range
DN50 to DN600
As a professional manufacturer with over 8 years of experience, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in providing high-performance fluid control solutions for the global marine industry. Our Marine Rubber Lined Butterfly Valve is engineered specifically for demanding shipboard applications, offering reliable shut-off and control for bilge, ballast, and cooling water lines. Built with durability and corrosion resistance in mind, this valve ensures operational integrity in harsh marine environments, helping ship operators and builders enhance system safety and reduce maintenance costs.
Our valves are manufactured under a strict ISO9001 quality management system, guaranteeing consistent performance and quality in every unit. With an annual export value ranging between US$1 Million and US$1.5 Million, our products have gained trust in major markets worldwide, including North America, Europe, Southeast Asia, and Africa. We are committed to delivering valves that meet the precise needs of marine engineering, backed by our expertise as a dedicated manufacturer.
Key Features & Technical Advantages:
- Superior Corrosion Resistance: The valve features a full rubber lining (EPDM, NBR, or Natural Rubber) on both the body interior and the disc. This lining acts as a robust barrier, protecting the metal components from seawater, bilge water, and various corrosive fluids commonly found in marine systems.
- Excellent Sealing Performance: The resilient rubber seat provides a bubble-tight seal, ensuring zero leakage even after prolonged use and frequent cycling. This is critical for maintaining proper ballast levels, preventing unwanted water ingress, and ensuring efficient cooling water flow.
- Low Torque Operation: The streamlined disc design and high-quality rubber lining minimize friction during operation. This allows for smooth and easy actuation, reducing operator effort and enabling the use of smaller, more cost-effective actuators when automation is required.
- Versatile Material Construction: The valve body is available in robust materials like Cast Iron, Ductile Iron, or Stainless Steel to suit different pressure ratings and environmental conditions. The disc is typically carbon steel fully covered with rubber, ensuring compatibility with a wide range of marine fluids.
- Compact & Lightweight Design: The wafer or lug-type butterfly valve design offers a significant space and weight saving compared to traditional gate or globe valves. This is a crucial advantage in the space-constrained engine rooms and bilge areas of ships and offshore platforms.
- Easy Installation & Maintenance: The simple design allows for quick installation between pipe flanges. The rubber lining also reduces wear on the disc and seat, leading to extended service life and minimal maintenance requirements, lowering the total cost of ownership.
Detailed Technical Specifications:
| Parameter | Specification |
| Size Range | DN50 (2") to DN600 (24") |
| Pressure Rating | PN10, PN16 (Standard) |
| Temperature Range | -10°C to +120°C (Depending on lining material) |
| Connection Standard | ISO, DIN, ANSI Flanges (Wafer/Lug) |
| Lining Material Options | EPDM (Excellent for fresh/cooling water), NBR (Good oil resistance), Natural Rubber (General purpose) |
| Body Material Options | Cast Iron, Ductile Iron, Stainless Steel (304/316) |
| Operation Method | Manual Lever, Worm Gear Operator, Electric/Pneumatic Actuator (Optional) |
| Sealing Leakage Class | Zero Leakage (Bubble-tight when closed) |
Benefits for Your Marine Operations:
- Enhanced System Reliability: Prevents failures in critical bilge pumping, ballast transfer, and engine cooling systems, contributing to overall vessel safety and uptime.
- Reduced Corrosion & Maintenance: The rubber lining drastically reduces corrosion of internal metal parts, leading to longer valve life and significantly lower maintenance and replacement costs.
- Improved Operational Efficiency: Low operating torque and reliable sealing ensure smooth control of fluid flows, optimizing the performance of connected pumps and systems.
- Cost-Effective Solution: Offers a durable and reliable sealing solution at a competitive price point compared to more expensive alloy valves, providing excellent value.
Frequently Asked Questions (FAQ):
-
Q: What is the primary advantage of a rubber-lined butterfly valve for marine use?
A: The primary advantage is superior corrosion resistance. The rubber lining completely isolates the metal valve body and disc from corrosive seawater, bilge water, and other fluids, greatly extending service life and reliability in a saltwater environment. -
Q: Which rubber lining material is suitable for cooling water lines?
A: EPDM (Ethylene Propylene Diene Monomer) rubber is typically recommended for cooling water lines. It offers excellent resistance to fresh water, mild chemicals, and heat, making it ideal for engine cooling systems. -
Q: Can this valve be used for both on/off and throttling service?
A: Yes. While it provides excellent shut-off (on/off) service, the design also allows for effective flow modulation (throttling) in applications like ballast control, though it is recommended to consult on the specific application requirements. -
Q: What are the available actuation options?
A: The valve can be supplied with a manual lever for smaller sizes, a worm gear operator for larger sizes requiring higher torque, or it can be fitted with electric or pneumatic actuators for remote and automated control systems. -
Q: How does the wafer-type connection differ from the lug-type?
A: A wafer-style valve is installed between two pipe flanges using long bolts. A lug-style valve has threaded inserts (lugs) on the valve body, allowing it to be bolted directly to each flange, which can be beneficial for end-of-line service or when one side needs to be disconnected. -
Q: What is the typical delivery time for standard sizes?
A: Standard sizes and materials typically have shorter lead times. Exact delivery schedules can be confirmed upon request, as we maintain efficient production and inventory management. -
Q: Do you provide customization for non-standard sizes or pressures?
A: Yes. As a manufacturer, we have the capability to customize valves outside the standard DN50-DN600 range or for higher pressure ratings. Please contact us with your specific requirements for a tailored solution. -
Q: What quality assurance measures are in place?
A: Our manufacturing process is certified under the ISO9001 Quality Management System. Every valve undergoes rigorous pressure testing and visual inspection before shipment to ensure it meets performance specifications.
Shanghai Zhibang Valve Manufacture Co., Ltd. stands as a reliable partner in the global marine supply chain. With our products successfully exported to diverse regions including North America, Eastern Europe, Southeast Asia, and Africa, we have demonstrated our ability to meet international standards and the specific demands of various maritime markets. Our commitment to quality under the ISO9001 framework, combined with competitive pricing and flexible shipping options from major ports like Shanghai, Guangzhou, and Hong Kong, makes us a strategic supplier for your valve needs. Choose our Marine Rubber Lined Butterfly Valve for a durable, cost-effective, and high-performance solution that safeguards your vessel's critical fluid systems. Contact us today to discuss your project requirements or to request a detailed quotation.
Send Inquiry to This Supplier
1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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