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Help CenterCCS Approved GB/T3036-94 Ship Semi Lug Type Hydraulic Actuated Centerline Butterfly Valve
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As a leading manufacturer based in Shanghai, China, Shanghai Zhibang Valve Manufacture Co., Ltd specializes in high-quality marine valves. Our CCS Approved GB/T3036-94 Ship Semi Lug Type Hydraulic Actuated Centerline Butterfly Valve is designed to meet the rigorous demands of shipbuilding and offshore applications. With over 8 years of experience and annual export value exceeding US$1 million, we deliver reliable, durable, and cost-effective solutions for global clients. This valve combines precise hydraulic actuation with a semi-lug design, ensuring easy installation and maintenance in confined spaces.
The valve complies with the Chinese national standard GB/T3036-94 and is fully approved by the China Classification Society (CCS), guaranteeing its safety and performance in marine environments. Its centerline design provides a bubble-tight seal, while the hydraulic actuator offers smooth, remote-controlled operation. Whether you need a valve for ballast systems, cooling water lines, or fire-fighting systems, this product delivers consistent performance under harsh conditions.
Key Features & Technical Specifications
- CCS Type Approval: Certified by China Classification Society, meeting international marine safety standards.
- GB/T3036-94 Compliance: Manufactured strictly according to the national standard for butterfly valves.
- Semi-Lug Body: Allows for easy alignment and installation between flanges without full lug protrusion, saving space.
- Hydraulic Actuation: Equipped with a robust hydraulic cylinder, suitable for remote control and automation systems.
- Centerline Disc Design: Provides low torque operation and reliable sealing, even at low pressures.
- Bubble-Tight Shut-Off: Resilient seat ensures zero leakage when closed, critical for marine applications.
- Customizable Materials: Available in ductile iron, stainless steel, and other alloys on request to suit different media.
- Manual Override Option: Hydraulic actuator can be equipped with a handwheel for emergency operation.
- Wide Size Range: From DN50 to DN1200, with pressure ratings PN10 or PN16 (other options upon request).
Technical Data Table
| Parameter | Specification |
| Standard | GB/T3036-94 |
| Design Type | Centerline, Semi-Lug |
| Actuation | Hydraulic (hydraulic cylinder) |
| Pressure Rating | PN10 / PN16 (optional) |
| Size Range | DN50 – DN1200 |
| Body Material | Cast Iron, Ductile Iron, Stainless Steel (customizable) |
| Seat Material | EPDM, NBR, PTFE (optional) |
| Temperature Range | -20°C to +120°C (depending on seat material) |
| End Connection | Wafer between flanges (semi-lug) |
Advantages for Your Marine Project
- Space-Saving Design: The semi-lug body eliminates the need for long bolts, making installation easier in tight engine rooms.
- Reliable Remote Control: Hydraulic actuation allows for safe operation from a distance, reducing manual labor and enhancing safety.
- Cost-Effective Maintenance: Centerline design simplifies disc and seat replacement, lowering downtime.
- Proven Durability: All components are tested for corrosion resistance and long service life in saline environments.
- Global Compatibility: Designed to meet both Chinese and international standards, suitable for ships built worldwide.
At Shanghai Zhibang Valve, we have supplied valves to shipyards and marine engineering companies across North America, Europe, Southeast Asia, and the Middle East. Our ISO9001-certified production process ensures consistent quality and on-time delivery from our Shanghai factory. With an annual export value of US$1 million to US$1.5 million, we have the capacity to handle large orders and customized requirements.
We stand behind every valve with dedicated after-sales support and technical guidance. Whether you need a single unit or a bulk shipment, our team is ready to provide competitive pricing and fast logistics via Shanghai, Guangzhou, Hongkong, or Beijing ports. Contact us today to discuss your specific needs and receive a detailed quotation.
Frequently Asked Questions (FAQ)
1. What does CCS approval mean for this valve?
CCS (China Classification Society) approval indicates that the valve design, materials, and testing meet the strict requirements for marine applications. It is essential for ships operating under Chinese flag or requiring CCS classification.
2. Can this valve be used for seawater or freshwater?
Yes, depending on the seat and body material chosen. EPDM seats are suitable for seawater, while NBR works well for oil and freshwater. Contact us for material recommendations.
3. What is the difference between semi-lug and full-lug butterfly valves?
A semi-lug valve has threaded inserts only on one side of the body, allowing it to be installed between flanges without full through-bolts. It is easier to align and install in tight spaces, though it cannot be used as a dead-end service.
4. Is the hydraulic actuator supplied with a manual override?
Yes, a manual handwheel override is available as an option. This allows operation in case of power or hydraulic system failure.
5. What is the typical lead time for this valve?
For standard sizes (DN50-DN300), lead time is approximately 15-20 working days. Larger sizes or special materials may require 25-30 days. Please confirm with our sales team.
6. Can you provide certificates for the material?
Yes, we can supply material test certificates (MTC) and hydrostatic test reports upon request. CCS certification documentation is also provided.
7. Do you offer samples for testing?
We can provide samples for evaluation, but the sample cost and freight will be charged. For bulk orders, the sample cost may be deductible.
8. What is the warranty period?
Our standard warranty is 12 months from the date of shipment or 18 months from the date of manufacture, whichever occurs first. Extended warranty is available upon request.
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