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Help CenterGB/T3036-94 Vessel Hydraulic Butterfly Valve Single Side Detachable Semi-Lug Body
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Shanghai Zhibang Valve Manufacture Co., Ltd, established in 2016, is a professional manufacturer specializing in high-quality valve solutions. Our GB/T3036-94 Vessel Hydraulic Butterfly Valve with Single Side Detachable Semi-Lug Body is designed for demanding marine and shipbuilding applications. Combining durability, ease of maintenance, and precise hydraulic control, this valve ensures reliable isolation and regulation in vessel piping systems. With ISO9001 certification and annual export value exceeding US$1 million, we deliver products trusted by global markets including North America, Europe, and Southeast Asia.
This butterfly valve features a semi-lug body with a single side detachable design, allowing for quick installation and removal without disturbing the piping system. The hydraulic actuator provides smooth and responsive operation, making it ideal for remote or automated control. Below are the key technical specifications and features:
| Design Standard | GB/T3036-94 |
| Body Style | Semi-Lug, Single Side Detachable |
| Size Range | DN50 to DN800 (custom sizes available upon request) |
| Pressure Rating | PN10 / PN16 / PN25 |
| Actuation | Hydraulic (manual override optional) |
| Body Material | Cast Iron, Ductile Iron, Stainless Steel (optional) |
| Seat Material | EPDM, NBR, PTFE (optional) |
| Applicable Media | Fresh water, seawater, oil, gas (depending on material) |
| Temperature Range | -20°C to +120°C (seat material dependent) |
Key Features & Benefits
- Single Side Detachable Semi-Lug Body: Allows easy valve removal from one side of the pipeline without dismantling the entire flange connection. This reduces maintenance time and costs, especially in confined spaces on vessels.
- Hydraulic Actuation: Provides precise and stable opening/closing with high torque, suitable for automated control systems. The actuator can be customized with position feedback, limit switches, or emergency manual operation.
- Compliance with GB/T3036-94: Manufactured strictly according to Chinese national standard for marine butterfly valves, ensuring interchangeability and reliability in shipbuilding.
- Durable Construction: Available in cast iron, ductile iron, or stainless steel to withstand corrosive marine environments. Seat materials like EPDM or PTFE offer excellent sealing performance.
- Versatile Installation: Can be installed between flanges (wafer type) or with integral lugs (semi-lug). The semi-lug design allows for dead-end service and easy removal of downstream piping.
- Low Torque & Bubble-tight Shut-off: Optimized disc profile reduces operating torque, while the resilient seat ensures zero leakage at rated pressure.
- Customizable Options: We offer various materials, pressure ratings, seat types, and actuator configurations to meet specific project requirements. Contact us for custom solutions.
Why Choose Shanghai Zhibang Valve?
As a manufacturer since 2016, we have built a solid reputation for quality and service. Our factory is ISO9001 certified, ensuring consistent production processes and rigorous quality control. With an annual export value of US$1 million to US$1.5 million, we serve clients across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and more. We ship from major ports including Shanghai, Guangzhou, Hong Kong, and Beijing, ensuring timely delivery worldwide.
Our team of engineers can assist with technical selection, installation guidance, and after-sales support. We understand the critical nature of marine valves and commit to delivering products that meet or exceed your expectations. Whether you need a single valve or a bulk order, we are ready to provide a competitive quotation.
Frequently Asked Questions
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What is the difference between a full lug and a semi-lug butterfly valve?
A full lug valve has threaded inserts on both sides of the body, allowing the valve to be removed from the line without affecting the downstream pipe. A semi-lug (or single side detachable) has lugs on only one side, enabling removal from one side only. This design is often used in space-constrained installations where full lug is not required. -
Can this valve be used for seawater?
Yes, when selected with appropriate materials such as ductile iron with epoxy coating or stainless steel body, and EPDM seat, the valve is suitable for seawater applications. Please advise your specific media for material recommendation. -
What hydraulic pressure is required for the actuator?
The actuator is typically designed for hydraulic oil pressure of 5-10 bar, but can be customized to match your system. We provide detailed specifications upon request. -
Is the valve bidirectional?
Yes, the resilient seated butterfly valve provides bidirectional sealing, though the rated pressure may differ slightly in reverse direction. Please consult our technical data sheet for details. -
What certifications do you have?
Our factory is ISO9001 certified. For specific marine certifications like CCS or DNV, they can be arranged at an additional cost and lead time. Please inquire. -
What is the lead time for standard sizes?
For standard sizes DN50-DN300, the lead time is typically 15-30 working days. Larger or customized orders may require 30-45 working days. -
Do you provide a manual override?
Yes, a manual handwheel or gearbox override can be integrated with the hydraulic actuator as an option. -
Can I get a sample before bulk order?
We accept sample orders. Sample cost is negotiable, and we can arrange shipment via express. Please contact our sales team.
Contact us today to get a quotation or technical datasheet. Our team in Shanghai is ready to support your marine valve requirements. With ISO9001 quality, competitive pricing, and global shipping, Shanghai Zhibang Valve is your reliable partner for vessel hydraulic butterfly valves.
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