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Help CenterGB/T3036-94 Marine Semi-Lug Butterfly Valve With Position Indicator Hydraulic Drive
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Shanghai Zhibang Valve Manufacture Co., Ltd., a professional manufacturer established in 2016 with ISO9001 certification, is proud to present the GB/T3036-94 Marine Semi-Lug Butterfly Valve with Position Indicator Hydraulic Drive. This valve is engineered to deliver reliable flow control in demanding marine environments, combining robust construction with precise hydraulic actuation. With an annual export value of US$1 million to US$1.5 million, we serve global markets including North America, Europe, Southeast Asia, and the Middle East, ensuring you receive a product that meets international standards.
Our semi-lug butterfly valve features a compact design that allows easy installation between flanges, while the integrated position indicator provides real-time visual feedback of the valve disc position. The hydraulic drive system ensures smooth and powerful operation, making it ideal for remote or automated control in shipbuilding, offshore platforms, and industrial water systems. Trust in our expertise and quality management to deliver a valve that performs consistently under harsh conditions.
Key Features & Benefits
- Marine-Grade Durability: Constructed from corrosion-resistant materials such as ductile iron or stainless steel, with optional coatings for seawater resistance.
- Precise Position Indicator: Clear visual indication of valve open/close status, enhancing operational safety and maintenance efficiency.
- Hydraulic Drive Efficiency: High torque output with low energy consumption, suitable for frequent operation and emergency shutdown systems.
- Semi-Lug Design: Allows independent support of the valve body, reducing stress on piping and simplifying installation.
- Compliance with GB/T3036-94: Manufactured strictly according to Chinese national standard, ensuring interchangeability and reliability.
- Customizable Options: Available in various sizes (DN50 to DN600), pressure ratings (PN10, PN16, Class150), and end connections (wafer, lug, or flanged).
- Low Maintenance: Self-lubricating bearings and sealed actuator housing extend service life and reduce downtime.
Technical Specifications
| Standard | GB/T3036-94 |
| Valve Type | Semi-Lug Butterfly Valve |
| Drive Mode | Hydraulic (manual override optional) |
| Position Indicator | Integrated visual indicator |
| Size Range | DN50 – DN600 (2" – 24") |
| Pressure Rating | PN10 / PN16 / Class150 (customizable) |
| Body Material | Ductile Iron (GJS400-15) / Stainless Steel (CF8M) / optional |
| Disc Material | Stainless Steel / Ductile Iron with Nylon Coating |
| Seat Material | EPDM / NBR / PTFE (according to application) |
| Operating Temperature | -20°C to +120°C (depending on seat material) |
| Hydraulic System Pressure | Up to 10 MPa (1450 psi) |
Why Choose Shanghai Zhibang Valve?
As a dedicated manufacturer with ISO9001 certification, we control every stage of production – from raw material inspection to final testing. Our valves undergo rigorous quality checks including hydrostatic and seat leakage tests. With multiple shipping ports (Shanghai, Guangzhou, Hong Kong, Beijing) and a global distribution network, we ensure timely delivery to over 15 markets worldwide. Our experienced engineering team provides technical support and customization services to meet your specific requirements.
We have supplied thousands of butterfly valves to marine and industrial projects, earning trust from clients in North America, Europe, and Asia. Our commitment to competitive pricing, fast lead times, and after-sales service makes us your reliable partner. Contact us today for a quotation or technical consultation!
Frequently Asked Questions
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Q: What is the difference between a semi-lug and a wafer butterfly valve?
A: A semi-lug valve has threaded inserts on the body that allow the valve to be installed between flanges with bolts that thread into the lugs, providing independent support. A wafer valve relies on the flange bolts to hold the valve in place. Semi-lug is preferred for easier maintenance and alignment. -
Q: Can this valve be used for seawater applications?
A: Yes, with appropriate material selection. We recommend stainless steel disc and nickel-aluminum bronze body or duplex stainless steel for seawater resistance. Please consult our technical team for the best material choice. -
Q: Is the hydraulic drive compatible with automatic control systems?
A: Absolutely. The hydraulic actuator can be integrated with solenoid valves, limit switches, and positioners for remote or automated operation. We can provide a complete control package upon request. -
Q: What certifications does your company hold?
A: Our company is ISO9001 certified. The valves are manufactured according to GB/T3036-94 standard. Additional certifications such as CCS or DNV can be arranged for marine applications at extra cost and lead time. -
Q: What is the typical lead time for this product?
A: For standard sizes and materials, the lead time is 15-25 working days. Customized orders may require 30-45 working days. We offer express delivery options for urgent projects. -
Q: Do you provide spare parts or hydraulic actuator repair services?
A: Yes, we offer spare parts including seals, actuators, and indicators. We also provide technical support for maintenance and troubleshooting. Contact our after-sales department for details. -
Q: Can the valve be supplied with a manual override for the hydraulic drive?
A: Yes, a manual handwheel or lever override is available as an option. It allows manual operation in case of hydraulic system failure or during commissioning.
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